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re PR fortran/29383 (Fortran 2003/F95[TR15580:1999]: Floating point exception (IEEE) support)

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PR fortran/29383

gcc/fortran/
	* gfortran.h (gfc_simplify_ieee_selected_real_kind): New prototype.
	* libgfortran.h (GFC_FPE_*): Use simple integer values, valid in
	both C and Fortran.
	* expr.c (gfc_check_init_expr): Simplify IEEE_SELECTED_REAL_KIND.
	* simplify.c (gfc_simplify_ieee_selected_real_kind): New function.
	* module.c (mio_symbol): Keep track of symbols which came from
	intrinsic modules.
	(gfc_use_module): Keep track of the IEEE modules.
	* trans-decl.c (gfc_get_symbol_decl): Adjust code since
	we have new intrinsic modules.
	(gfc_build_builtin_function_decls): Build decls for
	ieee_procedure_entry and ieee_procedure_exit.
	(is_from_ieee_module, is_ieee_module_used, save_fp_state,
	restore_fp_state): New functions.
	(gfc_generate_function_code): Save and restore floating-point
	state on procedure entry/exit, when IEEE modules are used.
	* intrinsic.texi: Document the IEEE modules.

libgfortran/
	* configure.host: Add checks for IEEE support, rework priorities.
	* configure.ac: Define IEEE_SUPPORT, check for fpsetsticky and
	fpresetsticky.
	* configure: Regenerate.
	* Makefile.am: Build new ieee files, install IEEE_* modules.
	* Makefile.in: Regenerate.
	* gfortran.map (GFORTRAN_1.6): Add new symbols.
	* libgfortran.h (get_fpu_trap_exceptions, set_fpu_trap_exceptions,
	support_fpu_trap, set_fpu_except_flags, support_fpu_flag,
	support_fpu_rounding_mode, get_fpu_state, set_fpu_state): New
	prototypes.
	* config/fpu-*.h (get_fpu_trap_exceptions,
	set_fpu_trap_exceptions, support_fpu_trap, set_fpu_except_flags,
	support_fpu_flag, support_fpu_rounding_mode, get_fpu_state,
	set_fpu_state): New functions.
	* ieee/ieee_features.F90: New file.
	* ieee/ieee_exceptions.F90: New file.
	* ieee/ieee_arithmetic.F90: New file.
	* ieee/ieee_helper.c: New file.

gcc/testsuite/
	* lib/target-supports.exp (check_effective_target_fortran_ieee): 
	New function.
	* gfortran.dg/ieee/ieee.exp: New file.
	* gfortran.dg/ieee/ieee_1.F90: New file.
	* gfortran.dg/ieee/ieee_2.f90: New file.
	* gfortran.dg/ieee/ieee_3.f90: New file.
	* gfortran.dg/ieee/ieee_4.f90: New file.
	* gfortran.dg/ieee/ieee_5.f90: New file.
	* gfortran.dg/ieee/ieee_6.f90: New file.
	* gfortran.dg/ieee/ieee_7.f90: New file.
	* gfortran.dg/ieee/ieee_rounding_1.f90: New file.

From-SVN: r212102
This commit is contained in:
Francois-Xavier Coudert 2014-06-28 14:17:41 +00:00 • committed by François-Xavier Coudert
parent a86471635f
commit 8b19810222
36 changed files with 4530 additions and 212 deletions
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21
gcc/fortran/ChangeLog
View file

@ -1,3 +1,24 @@
2014-06-28 Francois-Xavier Coudert <fxcoudert@gcc.gnu.org>
PR fortran/29383
* gfortran.h (gfc_simplify_ieee_selected_real_kind): New prototype.
* libgfortran.h (GFC_FPE_*): Use simple integer values, valid in
both C and Fortran.
* expr.c (gfc_check_init_expr): Simplify IEEE_SELECTED_REAL_KIND.
* simplify.c (gfc_simplify_ieee_selected_real_kind): New function.
* module.c (mio_symbol): Keep track of symbols which came from
intrinsic modules.
(gfc_use_module): Keep track of the IEEE modules.
* trans-decl.c (gfc_get_symbol_decl): Adjust code since
we have new intrinsic modules.
(gfc_build_builtin_function_decls): Build decls for
ieee_procedure_entry and ieee_procedure_exit.
(is_from_ieee_module, is_ieee_module_used, save_fp_state,
restore_fp_state): New functions.
(gfc_generate_function_code): Save and restore floating-point
state on procedure entry/exit, when IEEE modules are used.
* intrinsic.texi: Document the IEEE modules.
2014-06-25 Tobias Burnus <burnus@net-b.de>
* interface.c (check_intents): Fix diagnostic with

18
gcc/fortran/expr.c
View file

@ -2460,9 +2460,23 @@ gfc_check_init_expr (gfc_expr *e)
{
gfc_intrinsic_sym* isym;
gfc_symbol* sym;
gfc_symbol* sym = e->symtree->n.sym;
/* Special case for IEEE_SELECTED_REAL_KIND from the intrinsic
module IEEE_ARITHMETIC, which is allowed in initialization
expressions. */
if (!strcmp(sym->name, "ieee_selected_real_kind")
&& sym->from_intmod == INTMOD_IEEE_ARITHMETIC)
{
gfc_expr *new_expr = gfc_simplify_ieee_selected_real_kind (e);
if (new_expr)
{
gfc_replace_expr (e, new_expr);
t = true;
break;
}
}
sym = e->symtree->n.sym;
if (!gfc_is_intrinsic (sym, 0, e->where)
|| (m = gfc_intrinsic_func_interface (e, 0)) != MATCH_YES)
{

5
gcc/fortran/gfortran.h
View file

@ -678,7 +678,8 @@ iso_c_binding_symbol;
typedef enum
{
INTMOD_NONE = 0, INTMOD_ISO_FORTRAN_ENV, INTMOD_ISO_C_BINDING
INTMOD_NONE = 0, INTMOD_ISO_FORTRAN_ENV, INTMOD_ISO_C_BINDING,
INTMOD_IEEE_FEATURES, INTMOD_IEEE_EXCEPTIONS, INTMOD_IEEE_ARITHMETIC
}
intmod_id;
@ -2870,6 +2871,8 @@ gfc_formal_arglist *gfc_sym_get_dummy_args (gfc_symbol *);
/* intrinsic.c -- true if working in an init-expr, false otherwise. */
extern bool gfc_init_expr_flag;
gfc_expr *gfc_simplify_ieee_selected_real_kind (gfc_expr *);
/* Given a symbol that we have decided is intrinsic, mark it as such
by placing it into a special module that is otherwise impossible to
read or write. */

30
gcc/fortran/intrinsic.texi
View file

@ -13155,6 +13155,7 @@ Fortran 95 elemental function: @ref{IEOR}
@menu
* ISO_FORTRAN_ENV::
* ISO_C_BINDING::
* IEEE modules::
* OpenMP Modules OMP_LIB and OMP_LIB_KINDS::
@end menu
@ -13366,6 +13367,35 @@ Moreover, the following two named constants are defined:
Both are equivalent to the value @code{NULL} in C.
@node IEEE modules
@section IEEE modules: @code{IEEE_EXCEPTIONS}, @code{IEEE_ARITHMETIC}, and @code{IEEE_FEATURES}
@table @asis
@item @emph{Standard}:
Fortran 2003 and later
@end table
The @code{IEEE_EXCEPTIONS}, @code{IEEE_ARITHMETIC}, and @code{IEEE_FEATURES}
intrinsic modules provide support for exceptions and IEEE arithmetic, as
defined in Fortran 2003 and later standards, and the IEC 60559:1989 standard
(@emph{Binary floating-point arithmetic for microprocessor systems}). These
modules are only provided on the following supported platforms:
@itemize @bullet
@item i386 and x86_64 processors
@item platforms which use the GNU C Library (glibc)
@item platforms with support for SysV/386 routines for floating point
interface (including Solaris and BSDs)
@item platforms with the AIX OS
@end itemize
For full compliance with the Fortran standards, code using the
@code{IEEE_EXCEPTIONS} or @code{IEEE_ARITHMETIC} modules should be compiled
with the following options: @code{-fno-unsafe-math-optimizations
-frounding-math -fsignaling-nans}.
@node OpenMP Modules OMP_LIB and OMP_LIB_KINDS
@section OpenMP Modules @code{OMP_LIB} and @code{OMP_LIB_KINDS}
@table @asis

19
gcc/fortran/libgfortran.h
View file

@ -35,13 +35,14 @@ along with GCC; see the file COPYING3. If not see
obsolescent in later standards. */
/* Bitmasks for the various FPE that can be enabled. */
#define GFC_FPE_INVALID (1<<0)
#define GFC_FPE_DENORMAL (1<<1)
#define GFC_FPE_ZERO (1<<2)
#define GFC_FPE_OVERFLOW (1<<3)
#define GFC_FPE_UNDERFLOW (1<<4)
#define GFC_FPE_INEXACT (1<<5)
/* Bitmasks for the various FPE that can be enabled. These need to be straight integers
e.g., 8 instead of (1<<3), because they will be included in Fortran source. */
#define GFC_FPE_INVALID 1
#define GFC_FPE_DENORMAL 2
#define GFC_FPE_ZERO 4
#define GFC_FPE_OVERFLOW 8
#define GFC_FPE_UNDERFLOW 16
#define GFC_FPE_INEXACT 32
/* Defines for floating-point rounding modes. */
#define GFC_FPE_DOWNWARD 1
@ -49,6 +50,10 @@ along with GCC; see the file COPYING3. If not see
#define GFC_FPE_TOWARDZERO 3
#define GFC_FPE_UPWARD 4
/* Size of the buffer required to store FPU state for any target.
In particular, this has to be larger than fenv_t on all glibc targets.
Currently, the winner is x86_64 with 32 bytes. */
#define GFC_FPE_STATE_BUFFER_SIZE 32
/* Bitmasks for the various runtime checks that can be enabled. */
#define GFC_RTCHECK_BOUNDS (1<<0)

29
gcc/fortran/module.c
View file

@ -190,6 +190,9 @@ static gzFile module_fp;
static const char *module_name;
static gfc_use_list *module_list;
/* If we're reading an intrinsic module, this is its ID. */
static intmod_id current_intmod;
/* Content of module. */
static char* module_content;
@ -4096,7 +4099,10 @@ mio_symbol (gfc_symbol *sym)
else
{
mio_integer (&intmod);
sym->from_intmod = (intmod_id) intmod;
if (current_intmod)
sym->from_intmod = current_intmod;
else
sym->from_intmod = (intmod_id) intmod;
}
mio_integer (&(sym->intmod_sym_id));
@ -6733,6 +6739,7 @@ gfc_use_module (gfc_use_list *module)
module_name = module->module_name;
gfc_rename_list = module->rename;
only_flag = module->only_flag;
current_intmod = INTMOD_NONE;
filename = XALLOCAVEC (char, strlen (module_name) + strlen (MODULE_EXTENSION)
+ 1);
@ -6777,6 +6784,26 @@ gfc_use_module (gfc_use_list *module)
if (module_fp == NULL && module->intrinsic)
gfc_fatal_error ("Can't find an intrinsic module named '%s' at %C",
module_name);
/* Check for the IEEE modules, so we can mark their symbols
accordingly when we read them. */
if (strcmp (module_name, "ieee_features") == 0
&& gfc_notify_std (GFC_STD_F2003, "IEEE_FEATURES module at %C"))
{
current_intmod = INTMOD_IEEE_FEATURES;
}
else if (strcmp (module_name, "ieee_exceptions") == 0
&& gfc_notify_std (GFC_STD_F2003,
"IEEE_EXCEPTIONS module at %C"))
{
current_intmod = INTMOD_IEEE_EXCEPTIONS;
}
else if (strcmp (module_name, "ieee_arithmetic") == 0
&& gfc_notify_std (GFC_STD_F2003,
"IEEE_ARITHMETIC module at %C"))
{
current_intmod = INTMOD_IEEE_ARITHMETIC;
}
}
if (module_fp == NULL)

86
gcc/fortran/simplify.c
View file

@ -5460,12 +5460,13 @@ gfc_simplify_selected_real_kind (gfc_expr *p, gfc_expr *q, gfc_expr *rdx)
if (gfc_real_kinds[i].range >= range)
found_range = 1;
if (gfc_real_kinds[i].radix >= radix)
if (radix == 0 || gfc_real_kinds[i].radix == radix)
found_radix = 1;
if (gfc_real_kinds[i].precision >= precision
&& gfc_real_kinds[i].range >= range
&& gfc_real_kinds[i].radix >= radix && gfc_real_kinds[i].kind < kind)
&& (radix == 0 || gfc_real_kinds[i].radix == radix)
&& gfc_real_kinds[i].kind < kind)
kind = gfc_real_kinds[i].kind;
}
@ -5487,6 +5488,87 @@ gfc_simplify_selected_real_kind (gfc_expr *p, gfc_expr *q, gfc_expr *rdx)
}
gfc_expr *
gfc_simplify_ieee_selected_real_kind (gfc_expr *expr)
{
gfc_actual_arglist *arg = expr->value.function.actual;
gfc_expr *p = arg->expr, *r = arg->next->expr,
*rad = arg->next->next->expr;
int precision, range, radix, res;
int found_precision, found_range, found_radix, i;
if (p)
{
if (p->expr_type != EXPR_CONSTANT
|| gfc_extract_int (p, &precision) != NULL)
return NULL;
}
else
precision = 0;
if (r)
{
if (r->expr_type != EXPR_CONSTANT
|| gfc_extract_int (r, &range) != NULL)
return NULL;
}
else
range = 0;
if (rad)
{
if (rad->expr_type != EXPR_CONSTANT
|| gfc_extract_int (rad, &radix) != NULL)
return NULL;
}
else
radix = 0;
res = INT_MAX;
found_precision = 0;
found_range = 0;
found_radix = 0;
for (i = 0; gfc_real_kinds[i].kind != 0; i++)
{
/* We only support the target's float and double types. */
if (!gfc_real_kinds[i].c_float && !gfc_real_kinds[i].c_double)
continue;
if (gfc_real_kinds[i].precision >= precision)
found_precision = 1;
if (gfc_real_kinds[i].range >= range)
found_range = 1;
if (radix == 0 || gfc_real_kinds[i].radix == radix)
found_radix = 1;
if (gfc_real_kinds[i].precision >= precision
&& gfc_real_kinds[i].range >= range
&& (radix == 0 || gfc_real_kinds[i].radix == radix)
&& gfc_real_kinds[i].kind < res)
res = gfc_real_kinds[i].kind;
}
if (res == INT_MAX)
{
if (found_radix && found_range && !found_precision)
res = -1;
else if (found_radix && found_precision && !found_range)
res = -2;
else if (found_radix && !found_precision && !found_range)
res = -3;
else if (found_radix)
res = -4;
else
res = -5;
}
return gfc_get_int_expr (gfc_default_integer_kind, &expr->where, res);
}
gfc_expr *
gfc_simplify_set_exponent (gfc_expr *x, gfc_expr *i)
{

80
gcc/fortran/trans-decl.c
View file

@ -90,6 +90,9 @@ static stmtblock_t caf_init_block;
tree gfc_static_ctors;
/* Whether we've seen a symbol from an IEEE module in the namespace. */
static int seen_ieee_symbol;
/* Function declarations for builtin library functions. */
tree gfor_fndecl_pause_numeric;
@ -118,6 +121,8 @@ tree gfor_fndecl_in_unpack;
tree gfor_fndecl_associated;
tree gfor_fndecl_system_clock4;
tree gfor_fndecl_system_clock8;
tree gfor_fndecl_ieee_procedure_entry;
tree gfor_fndecl_ieee_procedure_exit;
/* Coarray run-time library function decls. */
@ -1376,8 +1381,9 @@ gfc_get_symbol_decl (gfc_symbol * sym)
/* Special case for array-valued named constants from intrinsic
procedures; those are inlined. */
if (sym->attr.use_assoc && sym->from_intmod
&& sym->attr.flavor == FL_PARAMETER)
if (sym->attr.use_assoc && sym->attr.flavor == FL_PARAMETER
&& (sym->from_intmod == INTMOD_ISO_FORTRAN_ENV
|| sym->from_intmod == INTMOD_ISO_C_BINDING))
intrinsic_array_parameter = true;
/* If use associated compilation, use the module
@ -3269,6 +3275,14 @@ gfc_build_builtin_function_decls (void)
get_identifier (PREFIX("set_fpe")),
void_type_node, 1, integer_type_node);
gfor_fndecl_ieee_procedure_entry = gfc_build_library_function_decl (
get_identifier (PREFIX("ieee_procedure_entry")),
void_type_node, 1, pvoid_type_node);
gfor_fndecl_ieee_procedure_exit = gfc_build_library_function_decl (
get_identifier (PREFIX("ieee_procedure_exit")),
void_type_node, 1, pvoid_type_node);
/* Keep the array dimension in sync with the call, later in this file. */
gfor_fndecl_set_options = gfc_build_library_function_decl_with_spec (
get_identifier (PREFIX("set_options")), "..R",
@ -5530,6 +5544,55 @@ gfc_generate_return (void)
}
static void
is_from_ieee_module (gfc_symbol *sym)
{
if (sym->from_intmod == INTMOD_IEEE_FEATURES
|| sym->from_intmod == INTMOD_IEEE_EXCEPTIONS
|| sym->from_intmod == INTMOD_IEEE_ARITHMETIC)
seen_ieee_symbol = 1;
}
static int
is_ieee_module_used (gfc_namespace *ns)
{
seen_ieee_symbol = 0;
gfc_traverse_ns (ns, is_from_ieee_module);
return seen_ieee_symbol;
}
static tree
save_fp_state (stmtblock_t *block)
{
tree type, fpstate, tmp;
type = build_array_type (char_type_node,
build_range_type (size_type_node, size_zero_node,
size_int (32)));
fpstate = gfc_create_var (type, "fpstate");
fpstate = gfc_build_addr_expr (pvoid_type_node, fpstate);
tmp = build_call_expr_loc (input_location, gfor_fndecl_ieee_procedure_entry,
1, fpstate);
gfc_add_expr_to_block (block, tmp);
return fpstate;
}
static void
restore_fp_state (stmtblock_t *block, tree fpstate)
{
tree tmp;
tmp = build_call_expr_loc (input_location, gfor_fndecl_ieee_procedure_exit,
1, fpstate);
gfc_add_expr_to_block (block, tmp);
}
/* Generate code for a function. */
void
@ -5539,13 +5602,14 @@ gfc_generate_function_code (gfc_namespace * ns)
tree old_context;
tree decl;
tree tmp;
tree fpstate = NULL_TREE;
stmtblock_t init, cleanup;
stmtblock_t body;
gfc_wrapped_block try_block;
tree recurcheckvar = NULL_TREE;
gfc_symbol *sym;
gfc_symbol *previous_procedure_symbol;
int rank;
int rank, ieee;
bool is_recursive;
sym = ns->proc_name;
@ -5636,6 +5700,12 @@ gfc_generate_function_code (gfc_namespace * ns)
free (msg);
}
/* Check if an IEEE module is used in the procedure. If so, save
the floating point state. */
ieee = is_ieee_module_used (ns);
if (ieee)
fpstate = save_fp_state (&init);
/* Now generate the code for the body of this function. */
gfc_init_block (&body);
@ -5719,6 +5789,10 @@ gfc_generate_function_code (gfc_namespace * ns)
recurcheckvar = NULL;
}
/* If IEEE modules are loaded, restore the floating-point state. */
if (ieee)
restore_fp_state (&cleanup, fpstate);
/* Finish the function body and add init and cleanup code. */
tmp = gfc_finish_block (&body);
gfc_start_wrapped_block (&try_block, tmp);

15
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,18 @@
2014-06-28 Francois-Xavier Coudert <fxcoudert@gcc.gnu.org>
PR fortran/29383
* lib/target-supports.exp (check_effective_target_fortran_ieee):
New function.
* gfortran.dg/ieee/ieee.exp: New file.
* gfortran.dg/ieee/ieee_1.F90: New file.
* gfortran.dg/ieee/ieee_2.f90: New file.
* gfortran.dg/ieee/ieee_3.f90: New file.
* gfortran.dg/ieee/ieee_4.f90: New file.
* gfortran.dg/ieee/ieee_5.f90: New file.
* gfortran.dg/ieee/ieee_6.f90: New file.
* gfortran.dg/ieee/ieee_7.f90: New file.
* gfortran.dg/ieee/ieee_rounding_1.f90: New file.
2014-06-28 Jonathan Wakely <jwakely@redhat.com>
* g++.dg/cpp0x/elision_conv.C: New.

59
gcc/testsuite/gfortran.dg/ieee/ieee.exp Normal file
View file

@ -0,0 +1,59 @@
# Copyright (C) 2013 Free Software Foundation, Inc.
#
# This file is part of GCC.
#
# GCC is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# GCC is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GCC; see the file COPYING3. If not see
# <http://www.gnu.org/licenses/>.
# GCC testsuite that uses the `dg.exp' driver.
# Load support procs.
load_lib gfortran-dg.exp
load_lib target-supports.exp
# Initialize `dg'.
dg-init
# Flags specified in each test
global DEFAULT_FFLAGS
if ![info exists DEFAULT_FFLAGS] then {
set DEFAULT_FFLAGS ""
}
# Flags for finding the IEEE modules
if [info exists TOOL_OPTIONS] {
set specpath [get_multilibs ${TOOL_OPTIONS}]
} else {
set specpath [get_multilibs]
}
set options "-fintrinsic-modules-path $specpath/libgfortran/"
# Bail out if IEEE tests are not supported at all
if ![check_effective_target_fortran_ieee $options ] {
return
}
# Add target-independent options to require IEEE compatibility
set options "$DEFAULT_FFLAGS $options -fno-unsafe-math-optimizations -frounding-math -fsignaling-nans"
# Add target-specific options to require IEEE compatibility
set target_options [add_options_for_ieee ""]
set options "$options $target_options"
# Main loop.
gfortran-dg-runtest [lsort \
[find $srcdir/$subdir *.\[fF\]{,90,95,03,08} ] ] $options
# All done.
dg-finish

174
gcc/testsuite/gfortran.dg/ieee/ieee_1.F90 Normal file
View file

@ -0,0 +1,174 @@
! { dg-do run }
! { dg-additional-options "-ffree-line-length-none -O0" }
!
! Use dg-additional-options rather than dg-options to avoid overwriting the
! default IEEE options which are passed by ieee.exp and necessary.
use ieee_features, only : ieee_datatype, ieee_denormal, ieee_divide, &
ieee_halting, ieee_inexact_flag, ieee_inf, ieee_invalid_flag, &
ieee_nan, ieee_rounding, ieee_sqrt, ieee_underflow_flag
use ieee_exceptions
implicit none
interface use_real
procedure use_real_4, use_real_8
end interface use_real
type(ieee_flag_type), parameter :: x(5) = &
[ IEEE_INVALID, IEEE_OVERFLOW, IEEE_DIVIDE_BY_ZERO, &
IEEE_UNDERFLOW, IEEE_INEXACT ]
logical :: l(5) = .false.
character(len=5) :: s
#define FLAGS_STRING(S) \
call ieee_get_flag(x, l) ; \
write(S,"(5(A1))") merge(["I","O","Z","U","P"],[" "," "," "," "," "],l)
#define CHECK_FLAGS(expected) \
FLAGS_STRING(s) ; \
if (s /= expected) then ; \
write (*,"(A,I0,A,A)") "Flags at line ", __LINE__, ": ", s ; \
call abort ; \
end if ; \
call check_flag_sub
real :: sx
double precision :: dx
! This file tests IEEE_SET_FLAG and IEEE_GET_FLAG
!!!! IEEE float
! Initial flags are all off
CHECK_FLAGS(" ")
! Check we can clear them
call ieee_set_flag(ieee_all, .false.)
CHECK_FLAGS(" ")
! Raise invalid, then clear
sx = -1
call use_real(sx)
sx = sqrt(sx)
call use_real(sx)
CHECK_FLAGS("I ")
call ieee_set_flag(ieee_all, .false.)
CHECK_FLAGS(" ")
! Raise overflow and precision
sx = huge(sx)
CHECK_FLAGS(" ")
sx = sx*sx
CHECK_FLAGS(" O P")
call use_real(sx)
! Also raise divide-by-zero
sx = 0
sx = 1 / sx
CHECK_FLAGS(" OZ P")
call use_real(sx)
! Clear them
call ieee_set_flag([ieee_overflow,ieee_inexact,&
ieee_divide_by_zero],[.false.,.false.,.true.])
CHECK_FLAGS(" Z ")
call ieee_set_flag(ieee_divide_by_zero, .false.)
CHECK_FLAGS(" ")
! Raise underflow
sx = tiny(sx)
CHECK_FLAGS(" ")
sx = sx / 10
call use_real(sx)
CHECK_FLAGS(" UP")
! Raise everything
call ieee_set_flag(ieee_all, .true.)
CHECK_FLAGS("IOZUP")
! And clear
call ieee_set_flag(ieee_all, .false.)
CHECK_FLAGS(" ")
!!!! IEEE double
! Initial flags are all off
CHECK_FLAGS(" ")
! Check we can clear them
call ieee_set_flag(ieee_all, .false.)
CHECK_FLAGS(" ")
! Raise invalid, then clear
dx = -1
call use_real(dx)
dx = sqrt(dx)
call use_real(dx)
CHECK_FLAGS("I ")
call ieee_set_flag(ieee_all, .false.)
CHECK_FLAGS(" ")
! Raise overflow and precision
dx = huge(dx)
CHECK_FLAGS(" ")
dx = dx*dx
CHECK_FLAGS(" O P")
call use_real(dx)
! Also raise divide-by-zero
dx = 0
dx = 1 / dx
CHECK_FLAGS(" OZ P")
call use_real(dx)
! Clear them
call ieee_set_flag([ieee_overflow,ieee_inexact,&
ieee_divide_by_zero],[.false.,.false.,.true.])
CHECK_FLAGS(" Z ")
call ieee_set_flag(ieee_divide_by_zero, .false.)
CHECK_FLAGS(" ")
! Raise underflow
dx = tiny(dx)
CHECK_FLAGS(" ")
dx = dx / 10
CHECK_FLAGS(" UP")
call use_real(dx)
! Raise everything
call ieee_set_flag(ieee_all, .true.)
CHECK_FLAGS("IOZUP")
! And clear
call ieee_set_flag(ieee_all, .false.)
CHECK_FLAGS(" ")
contains
subroutine check_flag_sub
use ieee_exceptions
logical :: l(5) = .false.
type(ieee_flag_type), parameter :: x(5) = &
[ IEEE_INVALID, IEEE_OVERFLOW, IEEE_DIVIDE_BY_ZERO, &
IEEE_UNDERFLOW, IEEE_INEXACT ]
call ieee_get_flag(x, l)
if (any(l)) then
print *, "Flags not cleared in subroutine"
call abort
end if
end subroutine
! Interface to a routine that avoids calculations to be optimized out,
! making it appear that we use the result
subroutine use_real_4(x)
real :: x
if (x == 123456.789) print *, "toto"
end subroutine
subroutine use_real_8(x)
double precision :: x
if (x == 123456.789) print *, "toto"
end subroutine
end

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! { dg-do run }
use, intrinsic :: ieee_features
use, intrinsic :: ieee_exceptions
use, intrinsic :: ieee_arithmetic
implicit none
interface check_equal
procedure check_equal_float, check_equal_double
end interface
interface check_not_equal
procedure check_not_equal_float, check_not_equal_double
end interface
real :: sx1, sx2, sx3
double precision :: dx1, dx2, dx3
type(ieee_round_type) :: mode
! Test IEEE_COPY_SIGN
sx1 = 1.3
if (ieee_copy_sign(sx1, sx1) /= sx1) call abort
if (ieee_copy_sign(sx1, -sx1) /= -sx1) call abort
if (ieee_copy_sign(sx1, 1.) /= sx1) call abort
if (ieee_copy_sign(sx1, -1.) /= -sx1) call abort
sx1 = huge(sx1)
if (ieee_copy_sign(sx1, sx1) /= sx1) call abort
if (ieee_copy_sign(sx1, -sx1) /= -sx1) call abort
if (ieee_copy_sign(sx1, 1.) /= sx1) call abort
if (ieee_copy_sign(sx1, -1.) /= -sx1) call abort
sx1 = ieee_value(sx1, ieee_positive_inf)
if (ieee_copy_sign(sx1, sx1) /= sx1) call abort
if (ieee_copy_sign(sx1, -sx1) /= -sx1) call abort
if (ieee_copy_sign(sx1, 1.) /= sx1) call abort
if (ieee_copy_sign(sx1, -1.) /= -sx1) call abort
sx1 = tiny(sx1)
if (ieee_copy_sign(sx1, sx1) /= sx1) call abort
if (ieee_copy_sign(sx1, -sx1) /= -sx1) call abort
if (ieee_copy_sign(sx1, 1.) /= sx1) call abort
if (ieee_copy_sign(sx1, -1.) /= -sx1) call abort
sx1 = tiny(sx1)
sx1 = sx1 / 101
if (ieee_copy_sign(sx1, sx1) /= sx1) call abort
if (ieee_copy_sign(sx1, -sx1) /= -sx1) call abort
if (ieee_copy_sign(sx1, 1.) /= sx1) call abort
if (ieee_copy_sign(sx1, -1.) /= -sx1) call abort
sx1 = -1.3
if (ieee_copy_sign(sx1, sx1) /= sx1) call abort
if (ieee_copy_sign(sx1, -sx1) /= -sx1) call abort
if (ieee_copy_sign(sx1, 1.) /= abs(sx1)) call abort
if (ieee_copy_sign(sx1, -1.) /= -abs(sx1)) call abort
sx1 = -huge(sx1)
if (ieee_copy_sign(sx1, sx1) /= sx1) call abort
if (ieee_copy_sign(sx1, -sx1) /= -sx1) call abort
if (ieee_copy_sign(sx1, 1.) /= abs(sx1)) call abort
if (ieee_copy_sign(sx1, -1.) /= -abs(sx1)) call abort
sx1 = ieee_value(sx1, ieee_negative_inf)
if (ieee_copy_sign(sx1, sx1) /= sx1) call abort
if (ieee_copy_sign(sx1, -sx1) /= -sx1) call abort
if (ieee_copy_sign(sx1, 1.) /= abs(sx1)) call abort
if (ieee_copy_sign(sx1, -1.) /= -abs(sx1)) call abort
sx1 = -tiny(sx1)
if (ieee_copy_sign(sx1, sx1) /= sx1) call abort
if (ieee_copy_sign(sx1, -sx1) /= -sx1) call abort
if (ieee_copy_sign(sx1, 1.) /= abs(sx1)) call abort
if (ieee_copy_sign(sx1, -1.) /= -abs(sx1)) call abort
sx1 = -tiny(sx1)
sx1 = sx1 / 101
if (ieee_copy_sign(sx1, sx1) /= sx1) call abort
if (ieee_copy_sign(sx1, -sx1) /= -sx1) call abort
if (ieee_copy_sign(sx1, 1.) /= abs(sx1)) call abort
if (ieee_copy_sign(sx1, -1.) /= -abs(sx1)) call abort
if (ieee_class(ieee_copy_sign(0., -1.)) /= ieee_negative_zero) call abort
if (ieee_class(ieee_copy_sign(-0., -1.)) /= ieee_negative_zero) call abort
if (ieee_class(ieee_copy_sign(0., 1.)) /= ieee_positive_zero) call abort
if (ieee_class(ieee_copy_sign(-0., 1.)) /= ieee_positive_zero) call abort
sx1 = ieee_value(0., ieee_quiet_nan)
if (ieee_class(ieee_copy_sign(sx1, 1.)) /= ieee_quiet_nan) call abort
if (ieee_class(ieee_copy_sign(sx1, -1.)) /= ieee_quiet_nan) call abort
dx1 = 1.3
if (ieee_copy_sign(dx1, dx1) /= dx1) call abort
if (ieee_copy_sign(dx1, -dx1) /= -dx1) call abort
if (ieee_copy_sign(dx1, 1.) /= dx1) call abort
if (ieee_copy_sign(dx1, -1.d0) /= -dx1) call abort
dx1 = huge(dx1)
if (ieee_copy_sign(dx1, dx1) /= dx1) call abort
if (ieee_copy_sign(dx1, -dx1) /= -dx1) call abort
if (ieee_copy_sign(dx1, 1.d0) /= dx1) call abort
if (ieee_copy_sign(dx1, -1.) /= -dx1) call abort
dx1 = ieee_value(dx1, ieee_positive_inf)
if (ieee_copy_sign(dx1, dx1) /= dx1) call abort
if (ieee_copy_sign(dx1, -dx1) /= -dx1) call abort
if (ieee_copy_sign(dx1, 1.) /= dx1) call abort
if (ieee_copy_sign(dx1, -1.d0) /= -dx1) call abort
dx1 = tiny(dx1)
if (ieee_copy_sign(dx1, dx1) /= dx1) call abort
if (ieee_copy_sign(dx1, -dx1) /= -dx1) call abort
if (ieee_copy_sign(dx1, 1.d0) /= dx1) call abort
if (ieee_copy_sign(dx1, -1.) /= -dx1) call abort
dx1 = tiny(dx1)
dx1 = dx1 / 101
if (ieee_copy_sign(dx1, dx1) /= dx1) call abort
if (ieee_copy_sign(dx1, -dx1) /= -dx1) call abort
if (ieee_copy_sign(dx1, 1.) /= dx1) call abort
if (ieee_copy_sign(dx1, -1.d0) /= -dx1) call abort
dx1 = -1.3d0
if (ieee_copy_sign(dx1, dx1) /= dx1) call abort
if (ieee_copy_sign(dx1, -dx1) /= -dx1) call abort
if (ieee_copy_sign(dx1, 1.d0) /= abs(dx1)) call abort
if (ieee_copy_sign(dx1, -1.) /= -abs(dx1)) call abort
dx1 = -huge(dx1)
if (ieee_copy_sign(dx1, dx1) /= dx1) call abort
if (ieee_copy_sign(dx1, -dx1) /= -dx1) call abort
if (ieee_copy_sign(dx1, 1.) /= abs(dx1)) call abort
if (ieee_copy_sign(dx1, -1.d0) /= -abs(dx1)) call abort
dx1 = ieee_value(dx1, ieee_negative_inf)
if (ieee_copy_sign(dx1, dx1) /= dx1) call abort
if (ieee_copy_sign(dx1, -dx1) /= -dx1) call abort
if (ieee_copy_sign(dx1, 1.d0) /= abs(dx1)) call abort
if (ieee_copy_sign(dx1, -1.) /= -abs(dx1)) call abort
dx1 = -tiny(dx1)
if (ieee_copy_sign(dx1, dx1) /= dx1) call abort
if (ieee_copy_sign(dx1, -dx1) /= -dx1) call abort
if (ieee_copy_sign(dx1, 1.) /= abs(dx1)) call abort
if (ieee_copy_sign(dx1, -1.d0) /= -abs(dx1)) call abort
dx1 = -tiny(dx1)
dx1 = dx1 / 101
if (ieee_copy_sign(dx1, dx1) /= dx1) call abort
if (ieee_copy_sign(dx1, -dx1) /= -dx1) call abort
if (ieee_copy_sign(dx1, 1.d0) /= abs(dx1)) call abort
if (ieee_copy_sign(dx1, -1.) /= -abs(dx1)) call abort
if (ieee_class(ieee_copy_sign(0.d0, -1.)) /= ieee_negative_zero) call abort
if (ieee_class(ieee_copy_sign(-0.d0, -1.)) /= ieee_negative_zero) call abort
if (ieee_class(ieee_copy_sign(0.d0, 1.)) /= ieee_positive_zero) call abort
if (ieee_class(ieee_copy_sign(-0.d0, 1.)) /= ieee_positive_zero) call abort
dx1 = ieee_value(0.d0, ieee_quiet_nan)
if (ieee_class(ieee_copy_sign(dx1, 1.d0)) /= ieee_quiet_nan) call abort
if (ieee_class(ieee_copy_sign(dx1, -1.)) /= ieee_quiet_nan) call abort
! Test IEEE_LOGB
if (ieee_logb(1.17) /= exponent(1.17) - 1) call abort
if (ieee_logb(-1.17) /= exponent(-1.17) - 1) call abort
if (ieee_logb(huge(sx1)) /= exponent(huge(sx1)) - 1) call abort
if (ieee_logb(-huge(sx1)) /= exponent(-huge(sx1)) - 1) call abort
if (ieee_logb(tiny(sx1)) /= exponent(tiny(sx1)) - 1) call abort
if (ieee_logb(-tiny(sx1)) /= exponent(-tiny(sx1)) - 1) call abort
if (ieee_class(ieee_logb(0.)) /= ieee_negative_inf) call abort
if (ieee_class(ieee_logb(-0.)) /= ieee_negative_inf) call abort
sx1 = ieee_value(sx1, ieee_positive_inf)
if (ieee_class(ieee_logb(sx1)) /= ieee_positive_inf) call abort
if (ieee_class(ieee_logb(-sx1)) /= ieee_positive_inf) call abort
sx1 = ieee_value(sx1, ieee_quiet_nan)
if (ieee_class(ieee_logb(sx1)) /= ieee_quiet_nan) call abort
if (ieee_logb(1.17d0) /= exponent(1.17d0) - 1) call abort
if (ieee_logb(-1.17d0) /= exponent(-1.17d0) - 1) call abort
if (ieee_logb(huge(dx1)) /= exponent(huge(dx1)) - 1) call abort
if (ieee_logb(-huge(dx1)) /= exponent(-huge(dx1)) - 1) call abort
if (ieee_logb(tiny(dx1)) /= exponent(tiny(dx1)) - 1) call abort
if (ieee_logb(-tiny(dx1)) /= exponent(-tiny(dx1)) - 1) call abort
if (ieee_class(ieee_logb(0.d0)) /= ieee_negative_inf) call abort
if (ieee_class(ieee_logb(-0.d0)) /= ieee_negative_inf) call abort
dx1 = ieee_value(dx1, ieee_positive_inf)
if (ieee_class(ieee_logb(dx1)) /= ieee_positive_inf) call abort
if (ieee_class(ieee_logb(-dx1)) /= ieee_positive_inf) call abort
dx1 = ieee_value(dx1, ieee_quiet_nan)
if (ieee_class(ieee_logb(dx1)) /= ieee_quiet_nan) call abort
! Test IEEE_NEXT_AFTER
if (ieee_next_after(0.12, 1.0) /= nearest(0.12, 1.0)) call abort
if (ieee_next_after(0.12, -1.0) /= nearest(0.12, -1.0)) call abort
sx1 = 0.12
if (ieee_next_after(sx1, sx1) /= sx1) call abort
sx1 = -0.12
if (ieee_next_after(sx1, sx1) /= sx1) call abort
sx1 = huge(sx1)
if (ieee_next_after(sx1, sx1) /= sx1) call abort
sx1 = tiny(sx1)
if (ieee_next_after(sx1, sx1) /= sx1) call abort
sx1 = 0
if (ieee_next_after(sx1, sx1) /= sx1) call abort
sx1 = ieee_value(sx1, ieee_negative_inf)
if (ieee_next_after(sx1, sx1) /= sx1) call abort
sx1 = ieee_value(sx1, ieee_quiet_nan)
if (ieee_class(ieee_next_after(sx1, sx1)) /= ieee_quiet_nan) call abort
if (ieee_next_after(0., 1.0) <= 0) call abort
if (ieee_next_after(0., -1.0) >= 0) call abort
sx1 = ieee_next_after(huge(sx1), ieee_value(sx1, ieee_negative_inf))
if (.not. sx1 < huge(sx1)) call abort
sx1 = ieee_next_after(huge(sx1), ieee_value(sx1, ieee_positive_inf))
if (ieee_class(sx1) /= ieee_positive_inf) call abort
sx1 = ieee_next_after(-tiny(sx1), 1.0)
if (ieee_class(sx1) /= ieee_negative_denormal) call abort
if (ieee_next_after(0.12d0, 1.0d0) /= nearest(0.12d0, 1.0)) call abort
if (ieee_next_after(0.12d0, -1.0) /= nearest(0.12d0, -1.0)) call abort
dx1 = 0.12
if (ieee_next_after(dx1, dx1) /= dx1) call abort
dx1 = -0.12
if (ieee_next_after(dx1, dx1) /= dx1) call abort
dx1 = huge(dx1)
if (ieee_next_after(dx1, dx1) /= dx1) call abort
dx1 = tiny(dx1)
if (ieee_next_after(dx1, dx1) /= dx1) call abort
dx1 = 0
if (ieee_next_after(dx1, dx1) /= dx1) call abort
dx1 = ieee_value(dx1, ieee_negative_inf)
if (ieee_next_after(dx1, dx1) /= dx1) call abort
dx1 = ieee_value(dx1, ieee_quiet_nan)
if (ieee_class(ieee_next_after(dx1, dx1)) /= ieee_quiet_nan) call abort
if (ieee_next_after(0.d0, 1.0) <= 0) call abort
if (ieee_next_after(0.d0, -1.0d0) >= 0) call abort
dx1 = ieee_next_after(huge(dx1), ieee_value(dx1, ieee_negative_inf))
if (.not. dx1 < huge(dx1)) call abort
dx1 = ieee_next_after(huge(dx1), ieee_value(dx1, ieee_positive_inf))
if (ieee_class(dx1) /= ieee_positive_inf) call abort
dx1 = ieee_next_after(-tiny(dx1), 1.0d0)
if (ieee_class(dx1) /= ieee_negative_denormal) call abort
! Test IEEE_REM
if (ieee_rem(4.0, 3.0) /= 1.0) call abort
if (ieee_rem(-4.0, 3.0) /= -1.0) call abort
if (ieee_rem(2.0, 3.0d0) /= -1.0d0) call abort
if (ieee_rem(-2.0, 3.0d0) /= 1.0d0) call abort
if (ieee_rem(2.0d0, 3.0d0) /= -1.0d0) call abort
if (ieee_rem(-2.0d0, 3.0d0) /= 1.0d0) call abort
if (ieee_class(ieee_rem(ieee_value(0., ieee_quiet_nan), 1.0)) &
/= ieee_quiet_nan) call abort
if (ieee_class(ieee_rem(1.0, ieee_value(0.d0, ieee_quiet_nan))) &
/= ieee_quiet_nan) call abort
if (ieee_class(ieee_rem(ieee_value(0., ieee_positive_inf), 1.0)) &
/= ieee_quiet_nan) call abort
if (ieee_class(ieee_rem(ieee_value(0.d0, ieee_negative_inf), 1.0)) &
/= ieee_quiet_nan) call abort
if (ieee_rem(-1.0, ieee_value(0., ieee_positive_inf)) &
/= -1.0) call abort
if (ieee_rem(1.0, ieee_value(0.d0, ieee_negative_inf)) &
/= 1.0) call abort
! Test IEEE_RINT
if (ieee_support_rounding (ieee_nearest, sx1)) then
call ieee_get_rounding_mode (mode)
call ieee_set_rounding_mode (ieee_nearest)
sx1 = 7 / 3.
sx1 = ieee_rint (sx1)
call ieee_set_rounding_mode (mode)
if (sx1 /= 2) call abort
end if
if (ieee_support_rounding (ieee_up, sx1)) then
call ieee_get_rounding_mode (mode)
call ieee_set_rounding_mode (ieee_up)
sx1 = 7 / 3.
sx1 = ieee_rint (sx1)
call ieee_set_rounding_mode (mode)
if (sx1 /= 3) call abort
end if
if (ieee_support_rounding (ieee_down, sx1)) then
call ieee_get_rounding_mode (mode)
call ieee_set_rounding_mode (ieee_down)
sx1 = 7 / 3.
sx1 = ieee_rint (sx1)
call ieee_set_rounding_mode (mode)
if (sx1 /= 2) call abort
end if
if (ieee_support_rounding (ieee_to_zero, sx1)) then
call ieee_get_rounding_mode (mode)
call ieee_set_rounding_mode (ieee_to_zero)
sx1 = 7 / 3.
sx1 = ieee_rint (sx1)
call ieee_set_rounding_mode (mode)
if (sx1 /= 2) call abort
end if
if (ieee_class(ieee_rint(0.)) /= ieee_positive_zero) call abort
if (ieee_class(ieee_rint(-0.)) /= ieee_negative_zero) call abort
if (ieee_support_rounding (ieee_nearest, dx1)) then
call ieee_get_rounding_mode (mode)
call ieee_set_rounding_mode (ieee_nearest)
dx1 = 7 / 3.d0
dx1 = ieee_rint (dx1)
call ieee_set_rounding_mode (mode)
if (dx1 /= 2) call abort
end if
if (ieee_support_rounding (ieee_up, dx1)) then
call ieee_get_rounding_mode (mode)
call ieee_set_rounding_mode (ieee_up)
dx1 = 7 / 3.d0
dx1 = ieee_rint (dx1)
call ieee_set_rounding_mode (mode)
if (dx1 /= 3) call abort
end if
if (ieee_support_rounding (ieee_down, dx1)) then
call ieee_get_rounding_mode (mode)
call ieee_set_rounding_mode (ieee_down)
dx1 = 7 / 3.d0
dx1 = ieee_rint (dx1)
call ieee_set_rounding_mode (mode)
if (dx1 /= 2) call abort
end if
if (ieee_support_rounding (ieee_to_zero, dx1)) then
call ieee_get_rounding_mode (mode)
call ieee_set_rounding_mode (ieee_to_zero)
dx1 = 7 / 3.d0
dx1 = ieee_rint (dx1)
call ieee_set_rounding_mode (mode)
if (dx1 /= 2) call abort
end if
if (ieee_class(ieee_rint(0.d0)) /= ieee_positive_zero) call abort
if (ieee_class(ieee_rint(-0.d0)) /= ieee_negative_zero) call abort
! Test IEEE_SCALB
sx1 = 1
if (ieee_scalb(sx1, 2) /= 4.) call abort
if (ieee_scalb(-sx1, 2) /= -4.) call abort
if (ieee_scalb(sx1, -2) /= 1/4.) call abort
if (ieee_scalb(-sx1, -2) /= -1/4.) call abort
if (ieee_class(ieee_scalb(sx1, huge(0))) /= ieee_positive_inf) call abort
if (ieee_class(ieee_scalb(-sx1, huge(0))) /= ieee_negative_inf) call abort
if (ieee_class(ieee_scalb(sx1, -huge(0))) /= ieee_positive_zero) call abort
if (ieee_class(ieee_scalb(-sx1, -huge(0))) /= ieee_negative_zero) call abort
sx1 = ieee_value(sx1, ieee_quiet_nan)
if (ieee_class(ieee_scalb(sx1, 1)) /= ieee_quiet_nan) call abort
sx1 = ieee_value(sx1, ieee_positive_inf)
if (ieee_class(ieee_scalb(sx1, -42)) /= ieee_positive_inf) call abort
sx1 = ieee_value(sx1, ieee_negative_inf)
if (ieee_class(ieee_scalb(sx1, -42)) /= ieee_negative_inf) call abort
dx1 = 1
if (ieee_scalb(dx1, 2) /= 4.d0) call abort
if (ieee_scalb(-dx1, 2) /= -4.d0) call abort
if (ieee_scalb(dx1, -2) /= 1/4.d0) call abort
if (ieee_scalb(-dx1, -2) /= -1/4.d0) call abort
if (ieee_class(ieee_scalb(dx1, huge(0))) /= ieee_positive_inf) call abort
if (ieee_class(ieee_scalb(-dx1, huge(0))) /= ieee_negative_inf) call abort
if (ieee_class(ieee_scalb(dx1, -huge(0))) /= ieee_positive_zero) call abort
if (ieee_class(ieee_scalb(-dx1, -huge(0))) /= ieee_negative_zero) call abort
dx1 = ieee_value(dx1, ieee_quiet_nan)
if (ieee_class(ieee_scalb(dx1, 1)) /= ieee_quiet_nan) call abort
dx1 = ieee_value(dx1, ieee_positive_inf)
if (ieee_class(ieee_scalb(dx1, -42)) /= ieee_positive_inf) call abort
dx1 = ieee_value(dx1, ieee_negative_inf)
if (ieee_class(ieee_scalb(dx1, -42)) /= ieee_negative_inf) call abort
contains
subroutine check_equal_float (x, y)
real, intent(in) :: x, y
if (x /= y) then
print *, x, y
call abort
end if
end subroutine
subroutine check_equal_double (x, y)
double precision, intent(in) :: x, y
if (x /= y) then
print *, x, y
call abort
end if
end subroutine
subroutine check_not_equal_float (x, y)
real, intent(in) :: x, y
if (x == y) then
print *, x, y
call abort
end if
end subroutine
subroutine check_not_equal_double (x, y)
double precision, intent(in) :: x, y
if (x == y) then
print *, x, y
call abort
end if
end subroutine
end

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! { dg-do run }
use :: ieee_arithmetic
implicit none
real :: sx1, sx2, sx3
double precision :: dx1, dx2, dx3
integer, parameter :: s = kind(sx1), d = kind(dx1)
type(ieee_round_type) :: mode
! Test IEEE_IS_FINITE
if (ieee_support_datatype(0._s)) then
if (.not. ieee_is_finite(0.2_s)) call abort
if (.not. ieee_is_finite(-0.2_s)) call abort
if (.not. ieee_is_finite(0._s)) call abort
if (.not. ieee_is_finite(-0._s)) call abort
if (.not. ieee_is_finite(tiny(0._s))) call abort
if (.not. ieee_is_finite(tiny(0._s)/100)) call abort
if (.not. ieee_is_finite(huge(0._s))) call abort
if (.not. ieee_is_finite(-huge(0._s))) call abort
sx1 = huge(sx1)
if (ieee_is_finite(2*sx1)) call abort
if (ieee_is_finite(2*(-sx1))) call abort
sx1 = ieee_value(sx1, ieee_quiet_nan)
if (ieee_is_finite(sx1)) call abort
end if
if (ieee_support_datatype(0._d)) then
if (.not. ieee_is_finite(0.2_d)) call abort
if (.not. ieee_is_finite(-0.2_d)) call abort
if (.not. ieee_is_finite(0._d)) call abort
if (.not. ieee_is_finite(-0._d)) call abort
if (.not. ieee_is_finite(tiny(0._d))) call abort
if (.not. ieee_is_finite(tiny(0._d)/100)) call abort
if (.not. ieee_is_finite(huge(0._d))) call abort
if (.not. ieee_is_finite(-huge(0._d))) call abort
dx1 = huge(dx1)
if (ieee_is_finite(2*dx1)) call abort
if (ieee_is_finite(2*(-dx1))) call abort
dx1 = ieee_value(dx1, ieee_quiet_nan)
if (ieee_is_finite(dx1)) call abort
end if
! Test IEEE_IS_NAN
if (ieee_support_datatype(0._s)) then
if (ieee_is_nan(0.2_s)) call abort
if (ieee_is_nan(-0.2_s)) call abort
if (ieee_is_nan(0._s)) call abort
if (ieee_is_nan(-0._s)) call abort
if (ieee_is_nan(tiny(0._s))) call abort
if (ieee_is_nan(tiny(0._s)/100)) call abort
if (ieee_is_nan(huge(0._s))) call abort
if (ieee_is_nan(-huge(0._s))) call abort
sx1 = huge(sx1)
if (ieee_is_nan(2*sx1)) call abort
if (ieee_is_nan(2*(-sx1))) call abort
sx1 = ieee_value(sx1, ieee_quiet_nan)
if (.not. ieee_is_nan(sx1)) call abort
sx1 = -1
if (.not. ieee_is_nan(sqrt(sx1))) call abort
end if
if (ieee_support_datatype(0._d)) then
if (ieee_is_nan(0.2_d)) call abort
if (ieee_is_nan(-0.2_d)) call abort
if (ieee_is_nan(0._d)) call abort
if (ieee_is_nan(-0._d)) call abort
if (ieee_is_nan(tiny(0._d))) call abort
if (ieee_is_nan(tiny(0._d)/100)) call abort
if (ieee_is_nan(huge(0._d))) call abort
if (ieee_is_nan(-huge(0._d))) call abort
dx1 = huge(dx1)
if (ieee_is_nan(2*dx1)) call abort
if (ieee_is_nan(2*(-dx1))) call abort
dx1 = ieee_value(dx1, ieee_quiet_nan)
if (.not. ieee_is_nan(dx1)) call abort
dx1 = -1
if (.not. ieee_is_nan(sqrt(dx1))) call abort
end if
! IEEE_IS_NEGATIVE
if (ieee_support_datatype(0._s)) then
if (ieee_is_negative(0.2_s)) call abort
if (.not. ieee_is_negative(-0.2_s)) call abort
if (ieee_is_negative(0._s)) call abort
if (.not. ieee_is_negative(-0._s)) call abort
if (ieee_is_negative(tiny(0._s))) call abort
if (ieee_is_negative(tiny(0._s)/100)) call abort
if (.not. ieee_is_negative(-tiny(0._s))) call abort
if (.not. ieee_is_negative(-tiny(0._s)/100)) call abort
if (ieee_is_negative(huge(0._s))) call abort
if (.not. ieee_is_negative(-huge(0._s))) call abort
sx1 = huge(sx1)
if (ieee_is_negative(2*sx1)) call abort
if (.not. ieee_is_negative(2*(-sx1))) call abort
sx1 = ieee_value(sx1, ieee_quiet_nan)
if (ieee_is_negative(sx1)) call abort
sx1 = -1
if (ieee_is_negative(sqrt(sx1))) call abort
end if
if (ieee_support_datatype(0._d)) then
if (ieee_is_negative(0.2_d)) call abort
if (.not. ieee_is_negative(-0.2_d)) call abort
if (ieee_is_negative(0._d)) call abort
if (.not. ieee_is_negative(-0._d)) call abort
if (ieee_is_negative(tiny(0._d))) call abort
if (ieee_is_negative(tiny(0._d)/100)) call abort
if (.not. ieee_is_negative(-tiny(0._d))) call abort
if (.not. ieee_is_negative(-tiny(0._d)/100)) call abort
if (ieee_is_negative(huge(0._d))) call abort
if (.not. ieee_is_negative(-huge(0._d))) call abort
dx1 = huge(dx1)
if (ieee_is_negative(2*dx1)) call abort
if (.not. ieee_is_negative(2*(-dx1))) call abort
dx1 = ieee_value(dx1, ieee_quiet_nan)
if (ieee_is_negative(dx1)) call abort
dx1 = -1
if (ieee_is_negative(sqrt(dx1))) call abort
end if
! Test IEEE_IS_NORMAL
if (ieee_support_datatype(0._s)) then
if (.not. ieee_is_normal(0.2_s)) call abort
if (.not. ieee_is_normal(-0.2_s)) call abort
if (.not. ieee_is_normal(0._s)) call abort
if (.not. ieee_is_normal(-0._s)) call abort
if (.not. ieee_is_normal(tiny(0._s))) call abort
if (ieee_is_normal(tiny(0._s)/100)) call abort
if (.not. ieee_is_normal(-tiny(0._s))) call abort
if (ieee_is_normal(-tiny(0._s)/100)) call abort
if (.not. ieee_is_normal(huge(0._s))) call abort
if (.not. ieee_is_normal(-huge(0._s))) call abort
sx1 = huge(sx1)
if (ieee_is_normal(2*sx1)) call abort
if (ieee_is_normal(2*(-sx1))) call abort
sx1 = ieee_value(sx1, ieee_quiet_nan)
if (ieee_is_normal(sx1)) call abort
sx1 = -1
if (ieee_is_normal(sqrt(sx1))) call abort
end if
if (ieee_support_datatype(0._d)) then
if (.not. ieee_is_normal(0.2_d)) call abort
if (.not. ieee_is_normal(-0.2_d)) call abort
if (.not. ieee_is_normal(0._d)) call abort
if (.not. ieee_is_normal(-0._d)) call abort
if (.not. ieee_is_normal(tiny(0._d))) call abort
if (ieee_is_normal(tiny(0._d)/100)) call abort
if (.not. ieee_is_normal(-tiny(0._d))) call abort
if (ieee_is_normal(-tiny(0._d)/100)) call abort
if (.not. ieee_is_normal(huge(0._d))) call abort
if (.not. ieee_is_normal(-huge(0._d))) call abort
dx1 = huge(dx1)
if (ieee_is_normal(2*dx1)) call abort
if (ieee_is_normal(2*(-dx1))) call abort
dx1 = ieee_value(dx1, ieee_quiet_nan)
if (ieee_is_normal(dx1)) call abort
dx1 = -1
if (ieee_is_normal(sqrt(dx1))) call abort
end if
end

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! { dg-do run }
use :: ieee_arithmetic
implicit none
real :: sx1, sx2, sx3
double precision :: dx1, dx2, dx3
integer, parameter :: s = kind(sx1), d = kind(dx1)
type(ieee_round_type) :: mode
! Test IEEE_CLASS
if (ieee_support_datatype(0._s)) then
sx1 = 0.1_s
if (ieee_class(sx1) /= ieee_positive_normal) call abort
if (ieee_class(-sx1) /= ieee_negative_normal) call abort
sx1 = huge(sx1)
if (ieee_class(sx1) /= ieee_positive_normal) call abort
if (ieee_class(-sx1) /= ieee_negative_normal) call abort
if (ieee_class(2*sx1) /= ieee_positive_inf) call abort
if (ieee_class(2*(-sx1)) /= ieee_negative_inf) call abort
sx1 = tiny(sx1)
if (ieee_class(sx1) /= ieee_positive_normal) call abort
if (ieee_class(-sx1) /= ieee_negative_normal) call abort
if (ieee_class(sx1 / 2) /= ieee_positive_denormal) call abort
if (ieee_class((-sx1) / 2) /= ieee_negative_denormal) call abort
sx1 = -1
if (ieee_class(sqrt(sx1)) /= ieee_quiet_nan) call abort
sx1 = 0
if (ieee_class(sx1) /= ieee_positive_zero) call abort
if (ieee_class(-sx1) /= ieee_negative_zero) call abort
end if
if (ieee_support_datatype(0._d)) then
dx1 = 0.1_d
if (ieee_class(dx1) /= ieee_positive_normal) call abort
if (ieee_class(-dx1) /= ieee_negative_normal) call abort
dx1 = huge(dx1)
if (ieee_class(dx1) /= ieee_positive_normal) call abort
if (ieee_class(-dx1) /= ieee_negative_normal) call abort
if (ieee_class(2*dx1) /= ieee_positive_inf) call abort
if (ieee_class(2*(-dx1)) /= ieee_negative_inf) call abort
dx1 = tiny(dx1)
if (ieee_class(dx1) /= ieee_positive_normal) call abort
if (ieee_class(-dx1) /= ieee_negative_normal) call abort
if (ieee_class(dx1 / 2) /= ieee_positive_denormal) call abort
if (ieee_class((-dx1) / 2) /= ieee_negative_denormal) call abort
dx1 = -1
if (ieee_class(sqrt(dx1)) /= ieee_quiet_nan) call abort
dx1 = 0
if (ieee_class(dx1) /= ieee_positive_zero) call abort
if (ieee_class(-dx1) /= ieee_negative_zero) call abort
end if
! Test IEEE_VALUE and IEEE_UNORDERED
if (ieee_support_datatype(0._s)) then
sx1 = ieee_value(sx1, ieee_quiet_nan)
if (.not. ieee_is_nan(sx1)) call abort
if (.not. ieee_unordered(sx1, sx1)) call abort
if (.not. ieee_unordered(sx1, 0._s)) call abort
if (.not. ieee_unordered(sx1, 0._d)) call abort
if (.not. ieee_unordered(0._s, sx1)) call abort
if (.not. ieee_unordered(0._d, sx1)) call abort
if (ieee_unordered(0._s, 0._s)) call abort
sx1 = ieee_value(sx1, ieee_positive_inf)
if (ieee_is_finite(sx1)) call abort
if (ieee_is_nan(sx1)) call abort
if (ieee_is_negative(sx1)) call abort
if (ieee_is_normal(sx1)) call abort
sx1 = ieee_value(sx1, ieee_negative_inf)
if (ieee_is_finite(sx1)) call abort
if (ieee_is_nan(sx1)) call abort
if (.not. ieee_is_negative(sx1)) call abort
if (ieee_is_normal(sx1)) call abort
sx1 = ieee_value(sx1, ieee_positive_normal)
if (.not. ieee_is_finite(sx1)) call abort
if (ieee_is_nan(sx1)) call abort
if (ieee_is_negative(sx1)) call abort
if (.not. ieee_is_normal(sx1)) call abort
sx1 = ieee_value(sx1, ieee_negative_normal)
if (.not. ieee_is_finite(sx1)) call abort
if (ieee_is_nan(sx1)) call abort
if (.not. ieee_is_negative(sx1)) call abort
if (.not. ieee_is_normal(sx1)) call abort
sx1 = ieee_value(sx1, ieee_positive_denormal)
if (.not. ieee_is_finite(sx1)) call abort
if (ieee_is_nan(sx1)) call abort
if (ieee_is_negative(sx1)) call abort
if (ieee_is_normal(sx1)) call abort
if (sx1 <= 0) call abort
if (sx1 >= tiny(sx1)) call abort
sx1 = ieee_value(sx1, ieee_negative_denormal)
if (.not. ieee_is_finite(sx1)) call abort
if (ieee_is_nan(sx1)) call abort
if (.not. ieee_is_negative(sx1)) call abort
if (ieee_is_normal(sx1)) call abort
if (sx1 >= 0) call abort
if (sx1 <= -tiny(sx1)) call abort
sx1 = ieee_value(sx1, ieee_positive_zero)
if (.not. ieee_is_finite(sx1)) call abort
if (ieee_is_nan(sx1)) call abort
if (ieee_is_negative(sx1)) call abort
if (.not. ieee_is_normal(sx1)) call abort
if (sx1 /= 0) call abort
sx1 = ieee_value(sx1, ieee_negative_zero)
if (.not. ieee_is_finite(sx1)) call abort
if (ieee_is_nan(sx1)) call abort
if (.not. ieee_is_negative(sx1)) call abort
if (.not. ieee_is_normal(sx1)) call abort
if (sx1 /= 0) call abort
end if
if (ieee_support_datatype(0._d)) then
dx1 = ieee_value(dx1, ieee_quiet_nan)
if (.not. ieee_is_nan(dx1)) call abort
if (.not. ieee_unordered(dx1, dx1)) call abort
if (.not. ieee_unordered(dx1, 0._s)) call abort
if (.not. ieee_unordered(dx1, 0._d)) call abort
if (.not. ieee_unordered(0._s, dx1)) call abort
if (.not. ieee_unordered(0._d, dx1)) call abort
if (ieee_unordered(0._d, 0._d)) call abort
dx1 = ieee_value(dx1, ieee_positive_inf)
if (ieee_is_finite(dx1)) call abort
if (ieee_is_nan(dx1)) call abort
if (ieee_is_negative(dx1)) call abort
if (ieee_is_normal(dx1)) call abort
dx1 = ieee_value(dx1, ieee_negative_inf)
if (ieee_is_finite(dx1)) call abort
if (ieee_is_nan(dx1)) call abort
if (.not. ieee_is_negative(dx1)) call abort
if (ieee_is_normal(dx1)) call abort
dx1 = ieee_value(dx1, ieee_positive_normal)
if (.not. ieee_is_finite(dx1)) call abort
if (ieee_is_nan(dx1)) call abort
if (ieee_is_negative(dx1)) call abort
if (.not. ieee_is_normal(dx1)) call abort
dx1 = ieee_value(dx1, ieee_negative_normal)
if (.not. ieee_is_finite(dx1)) call abort
if (ieee_is_nan(dx1)) call abort
if (.not. ieee_is_negative(dx1)) call abort
if (.not. ieee_is_normal(dx1)) call abort
dx1 = ieee_value(dx1, ieee_positive_denormal)
if (.not. ieee_is_finite(dx1)) call abort
if (ieee_is_nan(dx1)) call abort
if (ieee_is_negative(dx1)) call abort
if (ieee_is_normal(dx1)) call abort
if (dx1 <= 0) call abort
if (dx1 >= tiny(dx1)) call abort
dx1 = ieee_value(dx1, ieee_negative_denormal)
if (.not. ieee_is_finite(dx1)) call abort
if (ieee_is_nan(dx1)) call abort
if (.not. ieee_is_negative(dx1)) call abort
if (ieee_is_normal(dx1)) call abort
if (dx1 >= 0) call abort
if (dx1 <= -tiny(dx1)) call abort
dx1 = ieee_value(dx1, ieee_positive_zero)
if (.not. ieee_is_finite(dx1)) call abort
if (ieee_is_nan(dx1)) call abort
if (ieee_is_negative(dx1)) call abort
if (.not. ieee_is_normal(dx1)) call abort
if (dx1 /= 0) call abort
dx1 = ieee_value(dx1, ieee_negative_zero)
if (.not. ieee_is_finite(dx1)) call abort
if (ieee_is_nan(dx1)) call abort
if (.not. ieee_is_negative(dx1)) call abort
if (.not. ieee_is_normal(dx1)) call abort
if (dx1 /= 0) call abort
end if
end

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! { dg-do run }
use :: ieee_arithmetic
implicit none
logical mode
! Test IEEE_SET_UNDERFLOW_MODE, IEEE_GET_UNDERFLOW_MODE,
! and IEEE_SUPPORT_UNDERFLOW_CONTROL
!
! We don't have any targets where this is supported yet, so
! we just check these subroutines are present.
if (ieee_support_underflow_control() &
.or. ieee_support_underflow_control(0.)) then
call ieee_get_underflow_mode(mode)
call ieee_set_underflow_mode(.false.)
call ieee_set_underflow_mode(.true.)
call ieee_set_underflow_mode(mode)
end if
if (ieee_support_underflow_control() &
.or. ieee_support_underflow_control(0.d0)) then
call ieee_get_underflow_mode(mode)
call ieee_set_underflow_mode(.false.)
call ieee_set_underflow_mode(.true.)
call ieee_set_underflow_mode(mode)
end if
end

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! { dg-do run }
!
! This test will fail on older x86_64 glibc (< 2.20), due to this bug:
! https://sourceware.org/bugzilla/show_bug.cgi?id=16198
! We usually won't see it anyway, because on such systems x86_64 assembly
! (libgfortran/config/fpu-387.h) is used.
!
use :: ieee_arithmetic
implicit none
type(ieee_status_type) :: s1, s2
logical :: flags(5), halt(5)
type(ieee_round_type) :: mode
real :: x
! Test IEEE_GET_STATUS and IEEE_SET_STATUS
call ieee_set_flag(ieee_all, .false.)
call ieee_set_rounding_mode(ieee_down)
call ieee_set_halting_mode(ieee_all, .false.)
call ieee_get_status(s1)
call ieee_set_status(s1)
call ieee_get_flag(ieee_all, flags)
if (any(flags)) call abort
call ieee_get_rounding_mode(mode)
if (mode /= ieee_down) call abort
call ieee_get_halting_mode(ieee_all, halt)
if (any(halt)) call abort
call ieee_set_rounding_mode(ieee_to_zero)
call ieee_set_flag(ieee_underflow, .true.)
call ieee_set_halting_mode(ieee_overflow, .true.)
x = -1
x = sqrt(x)
if (.not. ieee_is_nan(x)) call abort
call ieee_get_status(s2)
call ieee_get_flag(ieee_all, flags)
if (.not. (all(flags .eqv. [.false.,.false.,.true.,.true.,.false.]) &
.or. all(flags .eqv. [.false.,.false.,.true.,.false.,.false.]))) call abort
call ieee_get_rounding_mode(mode)
if (mode /= ieee_to_zero) call abort
call ieee_get_halting_mode(ieee_all, halt)
if ((.not. halt(1)) .or. any(halt(2:))) call abort
call ieee_set_status(s2)
call ieee_get_flag(ieee_all, flags)
if (.not. (all(flags .eqv. [.false.,.false.,.true.,.true.,.false.]) &
.or. all(flags .eqv. [.false.,.false.,.true.,.false.,.false.]))) call abort
call ieee_get_rounding_mode(mode)
if (mode /= ieee_to_zero) call abort
call ieee_get_halting_mode(ieee_all, halt)
if ((.not. halt(1)) .or. any(halt(2:))) call abort
call ieee_set_status(s1)
call ieee_get_flag(ieee_all, flags)
if (any(flags)) call abort
call ieee_get_rounding_mode(mode)
if (mode /= ieee_down) call abort
call ieee_get_halting_mode(ieee_all, halt)
if (any(halt)) call abort
call ieee_set_status(s2)
call ieee_get_flag(ieee_all, flags)
if (.not. (all(flags .eqv. [.false.,.false.,.true.,.true.,.false.]) &
.or. all(flags .eqv. [.false.,.false.,.true.,.false.,.false.]))) call abort
call ieee_get_rounding_mode(mode)
if (mode /= ieee_to_zero) call abort
call ieee_get_halting_mode(ieee_all, halt)
if ((.not. halt(1)) .or. any(halt(2:))) call abort
end

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! { dg-do run }
use :: ieee_arithmetic
implicit none
! Test IEEE_SELECTED_REAL_KIND in specification expressions
integer(kind=ieee_selected_real_kind()) :: i1
integer(kind=ieee_selected_real_kind(10)) :: i2
integer(kind=ieee_selected_real_kind(10,10)) :: i3
integer(kind=ieee_selected_real_kind(10,10,2)) :: i4
! Test IEEE_SELECTED_REAL_KIND
if (ieee_support_datatype(0.)) then
if (ieee_selected_real_kind() /= kind(0.)) call abort
if (ieee_selected_real_kind(0) /= kind(0.)) call abort
if (ieee_selected_real_kind(0,0) /= kind(0.)) call abort
if (ieee_selected_real_kind(0,0,2) /= kind(0.)) call abort
end if
if (ieee_support_datatype(0.d0)) then
if (ieee_selected_real_kind(precision(0.)+1) /= kind(0.d0)) call abort
if (ieee_selected_real_kind(precision(0.),range(0.)+1) /= kind(0.d0)) call abort
if (ieee_selected_real_kind(precision(0.)+1,range(0.)+1) /= kind(0.d0)) call abort
if (ieee_selected_real_kind(precision(0.)+1,range(0.)+1,2) /= kind(0.d0)) call abort
end if
if (ieee_selected_real_kind(0,0,3) /= -5) call abort
if (ieee_selected_real_kind(precision(0.d0)+1) /= -1) call abort
if (ieee_selected_real_kind(0,range(0.d0)+1) /= -2) call abort
if (ieee_selected_real_kind(precision(0.d0)+1,range(0.d0)+1) /= -3) call abort
end

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gcc/testsuite/gfortran.dg/ieee/ieee_rounding_1.f90 Normal file
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! { dg-do run }
use, intrinsic :: ieee_features, only : ieee_rounding
use, intrinsic :: ieee_arithmetic
implicit none
interface check_equal
procedure check_equal_float, check_equal_double
end interface
interface check_not_equal
procedure check_not_equal_float, check_not_equal_double
end interface
interface divide
procedure divide_float, divide_double
end interface
real :: sx1, sx2, sx3
double precision :: dx1, dx2, dx3
type(ieee_round_type) :: mode
! We should support at least C float and C double types
if (ieee_support_rounding(ieee_nearest)) then
if (.not. ieee_support_rounding(ieee_nearest, 0.)) call abort
if (.not. ieee_support_rounding(ieee_nearest, 0.d0)) call abort
end if
! The initial rounding mode should probably be NEAREST
! (at least on the platforms we currently support)
if (ieee_support_rounding(ieee_nearest, 0.)) then
call ieee_get_rounding_mode (mode)
if (mode /= ieee_nearest) call abort
end if
if (ieee_support_rounding(ieee_up, sx1) .and. &
ieee_support_rounding(ieee_down, sx1) .and. &
ieee_support_rounding(ieee_nearest, sx1) .and. &
ieee_support_rounding(ieee_to_zero, sx1)) then
sx1 = 1
sx2 = 3
sx1 = divide(sx1, sx2, ieee_up)
sx3 = 1
sx2 = 3
sx3 = divide(sx3, sx2, ieee_down)
call check_not_equal(sx1, sx3)
call check_equal(sx3, nearest(sx1, -1.))
call check_equal(sx1, nearest(sx3, 1.))
call check_equal(1./3., divide(1., 3., ieee_nearest))
call check_equal(-1./3., divide(-1., 3., ieee_nearest))
call check_equal(divide(3., 7., ieee_to_zero), &
divide(3., 7., ieee_down))
call check_equal(divide(-3., 7., ieee_to_zero), &
divide(-3., 7., ieee_up))
end if
if (ieee_support_rounding(ieee_up, dx1) .and. &
ieee_support_rounding(ieee_down, dx1) .and. &
ieee_support_rounding(ieee_nearest, dx1) .and. &
ieee_support_rounding(ieee_to_zero, dx1)) then
dx1 = 1
dx2 = 3
dx1 = divide(dx1, dx2, ieee_up)
dx3 = 1
dx2 = 3
dx3 = divide(dx3, dx2, ieee_down)
call check_not_equal(dx1, dx3)
call check_equal(dx3, nearest(dx1, -1.d0))
call check_equal(dx1, nearest(dx3, 1.d0))
call check_equal(1.d0/3.d0, divide(1.d0, 3.d0, ieee_nearest))
call check_equal(-1.d0/3.d0, divide(-1.d0, 3.d0, ieee_nearest))
call check_equal(divide(3.d0, 7.d0, ieee_to_zero), &
divide(3.d0, 7.d0, ieee_down))
call check_equal(divide(-3.d0, 7.d0, ieee_to_zero), &
divide(-3.d0, 7.d0, ieee_up))
end if
contains
real function divide_float (x, y, rounding) result(res)
use, intrinsic :: ieee_arithmetic
real, intent(in) :: x, y
type(ieee_round_type), intent(in) :: rounding
type(ieee_round_type) :: old
call ieee_get_rounding_mode (old)
call ieee_set_rounding_mode (rounding)
res = x / y
call ieee_set_rounding_mode (old)
end function
double precision function divide_double (x, y, rounding) result(res)
use, intrinsic :: ieee_arithmetic
double precision, intent(in) :: x, y
type(ieee_round_type), intent(in) :: rounding
type(ieee_round_type) :: old
call ieee_get_rounding_mode (old)
call ieee_set_rounding_mode (rounding)
res = x / y
call ieee_set_rounding_mode (old)
end function
subroutine check_equal_float (x, y)
real, intent(in) :: x, y
if (x /= y) then
print *, x, y
call abort
end if
end subroutine
subroutine check_equal_double (x, y)
double precision, intent(in) :: x, y
if (x /= y) then
print *, x, y
call abort
end if
end subroutine
subroutine check_not_equal_float (x, y)
real, intent(in) :: x, y
if (x == y) then
print *, x, y
call abort
end if
end subroutine
subroutine check_not_equal_double (x, y)
double precision, intent(in) :: x, y
if (x == y) then
print *, x, y
call abort
end if
end subroutine
end

14
gcc/testsuite/lib/target-supports.exp
View file

@ -1110,6 +1110,20 @@ proc check_effective_target_fortran_real_16 { } {
}
# Return 1 if the target supports Fortran's IEEE modules,
# 0 otherwise.
#
# When the target name changes, replace the cached result.
proc check_effective_target_fortran_ieee { flags } {
return [check_no_compiler_messages fortran_ieee executable {
! Fortran
use, intrinsic :: ieee_features
end
} $flags ]
}
# Return 1 if the target supports SQRT for the largest floating-point
# type. (Some targets lack the libm support for this FP type.)
# On most targets, this check effectively checks either whether sqrtl is

23
libgfortran/ChangeLog
View file

@ -1,3 +1,26 @@
2014-06-28 Francois-Xavier Coudert <fxcoudert@gcc.gnu.org>
PR fortran/29383
* configure.host: Add checks for IEEE support, rework priorities.
* configure.ac: Define IEEE_SUPPORT, check for fpsetsticky and
fpresetsticky.
* configure: Regenerate.
* Makefile.am: Build new ieee files, install IEEE_* modules.
* Makefile.in: Regenerate.
* gfortran.map (GFORTRAN_1.6): Add new symbols.
* libgfortran.h (get_fpu_trap_exceptions, set_fpu_trap_exceptions,
support_fpu_trap, set_fpu_except_flags, support_fpu_flag,
support_fpu_rounding_mode, get_fpu_state, set_fpu_state): New
prototypes.
* config/fpu-*.h (get_fpu_trap_exceptions,
set_fpu_trap_exceptions, support_fpu_trap, set_fpu_except_flags,
support_fpu_flag, support_fpu_rounding_mode, get_fpu_state,
set_fpu_state): New functions.
* ieee/ieee_features.F90: New file.
* ieee/ieee_exceptions.F90: New file.
* ieee/ieee_arithmetic.F90: New file.
* ieee/ieee_helper.c: New file.
2014-06-26 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libgfortran/61499

45
libgfortran/Makefile.am
View file

@ -54,6 +54,11 @@ libcaf_single_la_LDFLAGS = -static
libcaf_single_la_DEPENDENCIES = caf/libcaf.h
libcaf_single_la_LINK = $(LINK) $(libcaf_single_la_LDFLAGS)
if IEEE_SUPPORT
fincludedir = $(libdir)/gcc/$(target_alias)/$(gcc_version)$(MULTISUBDIR)/finclude
nodist_finclude_HEADERS = ieee_arithmetic.mod ieee_exceptions.mod ieee_features.mod
endif
## io.h conflicts with a system header on some platforms, so
## use -iquote
AM_CPPFLAGS = -iquote$(srcdir)/io -I$(srcdir)/$(MULTISRCTOP)../gcc \
@ -70,6 +75,7 @@ AM_CFLAGS += $(SECTION_FLAGS)
# Some targets require additional compiler options for IEEE compatibility.
AM_CFLAGS += $(IEEE_FLAGS)
AM_FCFLAGS += $(IEEE_FLAGS)
gfor_io_src= \
io/close.c \
@ -160,6 +166,21 @@ intrinsics/unpack_generic.c \
runtime/in_pack_generic.c \
runtime/in_unpack_generic.c
if IEEE_SUPPORT
gfor_helper_src+=ieee/ieee_helper.c
gfor_ieee_src= \
ieee/ieee_arithmetic.F90 \
ieee/ieee_exceptions.F90 \
ieee/ieee_features.F90
else
gfor_ieee_src=
endif
gfor_src= \
runtime/backtrace.c \
runtime/bounds.c \
@ -650,7 +671,7 @@ gfor_built_src= $(i_all_c) $(i_any_c) $(i_count_c) $(i_maxloc0_c) \
$(i_exponent_c) $(i_fraction_c) $(i_nearest_c) $(i_set_exponent_c) \
$(i_pow_c) $(i_rrspacing_c) $(i_spacing_c) $(i_pack_c) $(i_unpack_c) \
$(i_spread_c) selected_int_kind.inc selected_real_kind.inc kinds.h \
$(i_cshift0_c) kinds.inc c99_protos.inc fpu-target.h
$(i_cshift0_c) kinds.inc c99_protos.inc fpu-target.h fpu-target.inc
# Machine generated specifics
gfor_built_specific_src= \
@ -811,11 +832,27 @@ $(patsubst %.c,%.lo,$(notdir $(i_matmull_c))): AM_CFLAGS += -funroll-loops
$(patsubst %.F90,%.lo,$(patsubst %.f90,%.lo,$(notdir $(gfor_specific_src)))): AM_FCFLAGS += -fallow-leading-underscore
selected_real_kind.lo selected_int_kind.lo: AM_FCFLAGS += -fallow-leading-underscore
if IEEE_SUPPORT
# Add flags for IEEE modules
$(patsubst %.F90,%.lo,$(notdir $(gfor_ieee_src))): AM_FCFLAGS += -Wno-unused-dummy-argument -Wno-c-binding-type -ffree-line-length-0 -fallow-leading-underscore
endif
# Dependencies between IEEE_ARITHMETIC and IEEE_EXCEPTIONS
ieee_arithmetic.lo: ieee/ieee_arithmetic.F90 ieee_exceptions.lo
$(LTPPFCCOMPILE) -c -o $@ $<
ieee_features.mod: ieee_features.lo
:
ieee_exceptions.mod: ieee_exceptions.lo
:
ieee_arithmetic.mod: ieee_arithmetic.lo
:
BUILT_SOURCES=$(gfor_built_src) $(gfor_built_specific_src) \
$(gfor_built_specific2_src) $(gfor_misc_specifics)
prereq_SRC = $(gfor_src) $(gfor_built_src) $(gfor_io_src) \
$(gfor_helper_src) $(gfor_io_headers) $(gfor_specific_src)
$(gfor_helper_src) $(gfor_ieee_src) $(gfor_io_headers) $(gfor_specific_src)
if onestep
# dummy sources for libtool
@ -871,6 +908,10 @@ selected_real_kind.inc: $(srcdir)/mk-srk-inc.sh
fpu-target.h: $(srcdir)/$(FPU_HOST_HEADER)
cp $(srcdir)/$(FPU_HOST_HEADER) $@
fpu-target.inc: fpu-target.h $(srcdir)/libgfortran.h
grep '^#define GFC_FPE_' < $(top_srcdir)/../gcc/fortran/libgfortran.h > $@ || true
grep '^#define GFC_FPE_' < $(srcdir)/libgfortran.h >> $@ || true
## A 'normal' build shouldn't need to regenerate these
## so we only include them in maintainer mode

206
libgfortran/Makefile.in
View file

@ -16,6 +16,7 @@
@SET_MAKE@
VPATH = @srcdir@
pkgdatadir = $(datadir)/@PACKAGE@
pkgincludedir = $(includedir)/@PACKAGE@
@ -36,9 +37,10 @@ POST_UNINSTALL = :
build_triplet = @build@
host_triplet = @host@
target_triplet = @target@
@IEEE_SUPPORT_TRUE@am__append_1 = ieee/ieee_helper.c
# dummy sources for libtool
@onestep_TRUE@am__append_1 = libgfortran_c.c libgfortran_f.f90
@onestep_TRUE@am__append_2 = libgfortran_c.c libgfortran_f.f90
subdir = .
DIST_COMMON = ChangeLog $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
$(top_srcdir)/configure $(am__configure_deps) \
@ -95,7 +97,7 @@ am__uninstall_files_from_dir = { \
}
am__installdirs = "$(DESTDIR)$(cafexeclibdir)" \
"$(DESTDIR)$(myexeclibdir)" "$(DESTDIR)$(toolexeclibdir)" \
"$(DESTDIR)$(toolexeclibdir)"
"$(DESTDIR)$(toolexeclibdir)" "$(DESTDIR)$(fincludedir)"
LTLIBRARIES = $(cafexeclib_LTLIBRARIES) $(myexeclib_LTLIBRARIES) \
$(toolexeclib_LTLIBRARIES)
libcaf_single_la_LIBADD =
@ -245,7 +247,8 @@ am__objects_41 = close.lo file_pos.lo format.lo inquire.lo \
intrinsics.lo list_read.lo lock.lo open.lo read.lo \
size_from_kind.lo transfer.lo transfer128.lo unit.lo unix.lo \
write.lo fbuf.lo
am__objects_42 = associated.lo abort.lo access.lo args.lo \
@IEEE_SUPPORT_TRUE@am__objects_42 = ieee_helper.lo
am__objects_43 = associated.lo abort.lo access.lo args.lo \
bit_intrinsics.lo c99_functions.lo chdir.lo chmod.lo clock.lo \
cpu_time.lo cshift0.lo ctime.lo date_and_time.lo dtime.lo \
env.lo eoshift0.lo eoshift2.lo erfc_scaled.lo etime.lo \
@ -259,9 +262,11 @@ am__objects_42 = associated.lo abort.lo access.lo args.lo \
selected_int_kind.lo selected_real_kind.lo stat.lo symlnk.lo \
system_clock.lo time.lo transpose_generic.lo umask.lo \
unlink.lo unpack_generic.lo in_pack_generic.lo \
in_unpack_generic.lo
am__objects_43 =
am__objects_44 = _abs_c4.lo _abs_c8.lo _abs_c10.lo _abs_c16.lo \
in_unpack_generic.lo $(am__objects_42)
@IEEE_SUPPORT_TRUE@am__objects_44 = ieee_arithmetic.lo \
@IEEE_SUPPORT_TRUE@ ieee_exceptions.lo ieee_features.lo
am__objects_45 =
am__objects_46 = _abs_c4.lo _abs_c8.lo _abs_c10.lo _abs_c16.lo \
_abs_i4.lo _abs_i8.lo _abs_i16.lo _abs_r4.lo _abs_r8.lo \
_abs_r10.lo _abs_r16.lo _aimag_c4.lo _aimag_c8.lo \
_aimag_c10.lo _aimag_c16.lo _exp_r4.lo _exp_r8.lo _exp_r10.lo \
@ -285,18 +290,19 @@ am__objects_44 = _abs_c4.lo _abs_c8.lo _abs_c10.lo _abs_c16.lo \
_conjg_c4.lo _conjg_c8.lo _conjg_c10.lo _conjg_c16.lo \
_aint_r4.lo _aint_r8.lo _aint_r10.lo _aint_r16.lo _anint_r4.lo \
_anint_r8.lo _anint_r10.lo _anint_r16.lo
am__objects_45 = _sign_i4.lo _sign_i8.lo _sign_i16.lo _sign_r4.lo \
am__objects_47 = _sign_i4.lo _sign_i8.lo _sign_i16.lo _sign_r4.lo \
_sign_r8.lo _sign_r10.lo _sign_r16.lo _dim_i4.lo _dim_i8.lo \
_dim_i16.lo _dim_r4.lo _dim_r8.lo _dim_r10.lo _dim_r16.lo \
_atan2_r4.lo _atan2_r8.lo _atan2_r10.lo _atan2_r16.lo \
_mod_i4.lo _mod_i8.lo _mod_i16.lo _mod_r4.lo _mod_r8.lo \
_mod_r10.lo _mod_r16.lo
am__objects_46 = misc_specifics.lo
am__objects_47 = $(am__objects_44) $(am__objects_45) $(am__objects_46) \
am__objects_48 = misc_specifics.lo
am__objects_49 = $(am__objects_46) $(am__objects_47) $(am__objects_48) \
dprod_r8.lo f2c_specifics.lo
am__objects_48 = $(am__objects_1) $(am__objects_40) $(am__objects_41) \
$(am__objects_42) $(am__objects_43) $(am__objects_47)
@onestep_FALSE@am_libgfortran_la_OBJECTS = $(am__objects_48)
am__objects_50 = $(am__objects_1) $(am__objects_40) $(am__objects_41) \
$(am__objects_43) $(am__objects_44) $(am__objects_45) \
$(am__objects_49)
@onestep_FALSE@am_libgfortran_la_OBJECTS = $(am__objects_50)
@onestep_TRUE@am_libgfortran_la_OBJECTS = libgfortran_c.lo
libgfortran_la_OBJECTS = $(am_libgfortran_la_OBJECTS)
libgfortranbegin_la_LIBADD =
@ -336,6 +342,7 @@ MULTISUBDIR =
MULTIDO = true
MULTICLEAN = true
DATA = $(toolexeclib_DATA)
HEADERS = $(nodist_finclude_HEADERS)
ETAGS = etags
CTAGS = ctags
ACLOCAL = @ACLOCAL@
@ -348,7 +355,7 @@ AMTAR = @AMTAR@
# Some targets require additional compiler options for IEEE compatibility.
AM_CFLAGS = @AM_CFLAGS@ -fcx-fortran-rules $(SECTION_FLAGS) \
$(IEEE_FLAGS)
AM_FCFLAGS = @AM_FCFLAGS@
AM_FCFLAGS = @AM_FCFLAGS@ $(IEEE_FLAGS)
AR = @AR@
AS = @AS@
AUTOCONF = @AUTOCONF@
@ -376,6 +383,7 @@ FGREP = @FGREP@
FPU_HOST_HEADER = @FPU_HOST_HEADER@
GREP = @GREP@
IEEE_FLAGS = @IEEE_FLAGS@
IEEE_SUPPORT = @IEEE_SUPPORT@
INSTALL = @INSTALL@
INSTALL_DATA = @INSTALL_DATA@
INSTALL_PROGRAM = @INSTALL_PROGRAM@
@ -516,6 +524,8 @@ libcaf_single_la_SOURCES = caf/single.c
libcaf_single_la_LDFLAGS = -static
libcaf_single_la_DEPENDENCIES = caf/libcaf.h
libcaf_single_la_LINK = $(LINK) $(libcaf_single_la_LDFLAGS)
@IEEE_SUPPORT_TRUE@fincludedir = $(libdir)/gcc/$(target_alias)/$(gcc_version)$(MULTISUBDIR)/finclude
@IEEE_SUPPORT_TRUE@nodist_finclude_HEADERS = ieee_arithmetic.mod ieee_exceptions.mod ieee_features.mod
AM_CPPFLAGS = -iquote$(srcdir)/io -I$(srcdir)/$(MULTISRCTOP)../gcc \
-I$(srcdir)/$(MULTISRCTOP)../gcc/config $(LIBQUADINCLUDE) \
-I$(MULTIBUILDTOP)../../$(host_subdir)/gcc \
@ -546,70 +556,39 @@ io/fbuf.h \
io/format.h \
io/unix.h
gfor_helper_src = \
intrinsics/associated.c \
intrinsics/abort.c \
intrinsics/access.c \
intrinsics/args.c \
intrinsics/bit_intrinsics.c \
intrinsics/c99_functions.c \
intrinsics/chdir.c \
intrinsics/chmod.c \
intrinsics/clock.c \
intrinsics/cpu_time.c \
intrinsics/cshift0.c \
intrinsics/ctime.c \
intrinsics/date_and_time.c \
intrinsics/dtime.c \
intrinsics/env.c \
intrinsics/eoshift0.c \
intrinsics/eoshift2.c \
intrinsics/erfc_scaled.c \
intrinsics/etime.c \
intrinsics/execute_command_line.c \
intrinsics/exit.c \
intrinsics/extends_type_of.c \
intrinsics/fnum.c \
intrinsics/gerror.c \
intrinsics/getcwd.c \
intrinsics/getlog.c \
intrinsics/getXid.c \
intrinsics/hostnm.c \
intrinsics/ierrno.c \
intrinsics/ishftc.c \
intrinsics/iso_c_generated_procs.c \
intrinsics/iso_c_binding.c \
intrinsics/kill.c \
intrinsics/link.c \
intrinsics/malloc.c \
intrinsics/mvbits.c \
intrinsics/move_alloc.c \
intrinsics/pack_generic.c \
intrinsics/perror.c \
intrinsics/selected_char_kind.c \
intrinsics/signal.c \
intrinsics/size.c \
intrinsics/sleep.c \
intrinsics/spread_generic.c \
intrinsics/string_intrinsics.c \
intrinsics/system.c \
intrinsics/rand.c \
intrinsics/random.c \
intrinsics/rename.c \
intrinsics/reshape_generic.c \
intrinsics/reshape_packed.c \
intrinsics/selected_int_kind.f90 \
intrinsics/selected_real_kind.f90 \
intrinsics/stat.c \
intrinsics/symlnk.c \
intrinsics/system_clock.c \
intrinsics/time.c \
intrinsics/transpose_generic.c \
intrinsics/umask.c \
intrinsics/unlink.c \
intrinsics/unpack_generic.c \
runtime/in_pack_generic.c \
runtime/in_unpack_generic.c
gfor_helper_src = intrinsics/associated.c intrinsics/abort.c \
intrinsics/access.c intrinsics/args.c \
intrinsics/bit_intrinsics.c intrinsics/c99_functions.c \
intrinsics/chdir.c intrinsics/chmod.c intrinsics/clock.c \
intrinsics/cpu_time.c intrinsics/cshift0.c intrinsics/ctime.c \
intrinsics/date_and_time.c intrinsics/dtime.c intrinsics/env.c \
intrinsics/eoshift0.c intrinsics/eoshift2.c \
intrinsics/erfc_scaled.c intrinsics/etime.c \
intrinsics/execute_command_line.c intrinsics/exit.c \
intrinsics/extends_type_of.c intrinsics/fnum.c \
intrinsics/gerror.c intrinsics/getcwd.c intrinsics/getlog.c \
intrinsics/getXid.c intrinsics/hostnm.c intrinsics/ierrno.c \
intrinsics/ishftc.c intrinsics/iso_c_generated_procs.c \
intrinsics/iso_c_binding.c intrinsics/kill.c intrinsics/link.c \
intrinsics/malloc.c intrinsics/mvbits.c \
intrinsics/move_alloc.c intrinsics/pack_generic.c \
intrinsics/perror.c intrinsics/selected_char_kind.c \
intrinsics/signal.c intrinsics/size.c intrinsics/sleep.c \
intrinsics/spread_generic.c intrinsics/string_intrinsics.c \
intrinsics/system.c intrinsics/rand.c intrinsics/random.c \
intrinsics/rename.c intrinsics/reshape_generic.c \
intrinsics/reshape_packed.c intrinsics/selected_int_kind.f90 \
intrinsics/selected_real_kind.f90 intrinsics/stat.c \
intrinsics/symlnk.c intrinsics/system_clock.c \
intrinsics/time.c intrinsics/transpose_generic.c \
intrinsics/umask.c intrinsics/unlink.c \
intrinsics/unpack_generic.c runtime/in_pack_generic.c \
runtime/in_unpack_generic.c $(am__append_1)
@IEEE_SUPPORT_FALSE@gfor_ieee_src =
@IEEE_SUPPORT_TRUE@gfor_ieee_src = \
@IEEE_SUPPORT_TRUE@ieee/ieee_arithmetic.F90 \
@IEEE_SUPPORT_TRUE@ieee/ieee_exceptions.F90 \
@IEEE_SUPPORT_TRUE@ieee/ieee_features.F90
gfor_src = \
runtime/backtrace.c \
@ -1100,7 +1079,7 @@ gfor_built_src = $(i_all_c) $(i_any_c) $(i_count_c) $(i_maxloc0_c) \
$(i_exponent_c) $(i_fraction_c) $(i_nearest_c) $(i_set_exponent_c) \
$(i_pow_c) $(i_rrspacing_c) $(i_spacing_c) $(i_pack_c) $(i_unpack_c) \
$(i_spread_c) selected_int_kind.inc selected_real_kind.inc kinds.h \
$(i_cshift0_c) kinds.inc c99_protos.inc fpu-target.h
$(i_cshift0_c) kinds.inc c99_protos.inc fpu-target.h fpu-target.inc
# Machine generated specifics
@ -1254,9 +1233,9 @@ intrinsics/f2c_specifics.F90
BUILT_SOURCES = $(gfor_built_src) $(gfor_built_specific_src) \
$(gfor_built_specific2_src) $(gfor_misc_specifics) \
$(am__append_1)
$(am__append_2)
prereq_SRC = $(gfor_src) $(gfor_built_src) $(gfor_io_src) \
$(gfor_helper_src) $(gfor_io_headers) $(gfor_specific_src)
$(gfor_helper_src) $(gfor_ieee_src) $(gfor_io_headers) $(gfor_specific_src)
@onestep_FALSE@libgfortran_la_SOURCES = $(prereq_SRC)
@ -1538,6 +1517,7 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/iany_i2.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/iany_i4.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/iany_i8.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ieee_helper.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ierrno.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/in_pack_c10.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/in_pack_c16.Plo@am__quote@
@ -1919,6 +1899,12 @@ distclean-compile:
.F90.lo:
$(LTPPFCCOMPILE) -c -o $@ $<
ieee_exceptions.lo: ieee/ieee_exceptions.F90
$(LIBTOOL) --tag=FC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(FC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FCFLAGS) $(FCFLAGS) -c -o ieee_exceptions.lo `test -f 'ieee/ieee_exceptions.F90' || echo '$(srcdir)/'`ieee/ieee_exceptions.F90
ieee_features.lo: ieee/ieee_features.F90
$(LIBTOOL) --tag=FC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(FC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FCFLAGS) $(FCFLAGS) -c -o ieee_features.lo `test -f 'ieee/ieee_features.F90' || echo '$(srcdir)/'`ieee/ieee_features.F90
_abs_c4.lo: $(srcdir)/generated/_abs_c4.F90
$(LIBTOOL) --tag=FC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(FC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FCFLAGS) $(FCFLAGS) -c -o _abs_c4.lo `test -f '$(srcdir)/generated/_abs_c4.F90' || echo '$(srcdir)/'`$(srcdir)/generated/_abs_c4.F90
@ -5630,6 +5616,13 @@ in_unpack_generic.lo: runtime/in_unpack_generic.c
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o in_unpack_generic.lo `test -f 'runtime/in_unpack_generic.c' || echo '$(srcdir)/'`runtime/in_unpack_generic.c
ieee_helper.lo: ieee/ieee_helper.c
@am__fastdepCC_TRUE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT ieee_helper.lo -MD -MP -MF $(DEPDIR)/ieee_helper.Tpo -c -o ieee_helper.lo `test -f 'ieee/ieee_helper.c' || echo '$(srcdir)/'`ieee/ieee_helper.c
@am__fastdepCC_TRUE@ $(am__mv) $(DEPDIR)/ieee_helper.Tpo $(DEPDIR)/ieee_helper.Plo
@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='ieee/ieee_helper.c' object='ieee_helper.lo' libtool=yes @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o ieee_helper.lo `test -f 'ieee/ieee_helper.c' || echo '$(srcdir)/'`ieee/ieee_helper.c
.f90.o:
$(FCCOMPILE) -c -o $@ $<
@ -5691,6 +5684,24 @@ uninstall-toolexeclibDATA:
@list='$(toolexeclib_DATA)'; test -n "$(toolexeclibdir)" || list=; \
files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
dir='$(DESTDIR)$(toolexeclibdir)'; $(am__uninstall_files_from_dir)
install-nodist_fincludeHEADERS: $(nodist_finclude_HEADERS)
@$(NORMAL_INSTALL)
test -z "$(fincludedir)" || $(MKDIR_P) "$(DESTDIR)$(fincludedir)"
@list='$(nodist_finclude_HEADERS)'; test -n "$(fincludedir)" || list=; \
for p in $$list; do \
if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
echo "$$d$$p"; \
done | $(am__base_list) | \
while read files; do \
echo " $(INSTALL_HEADER) $$files '$(DESTDIR)$(fincludedir)'"; \
$(INSTALL_HEADER) $$files "$(DESTDIR)$(fincludedir)" || exit $$?; \
done
uninstall-nodist_fincludeHEADERS:
@$(NORMAL_UNINSTALL)
@list='$(nodist_finclude_HEADERS)'; test -n "$(fincludedir)" || list=; \
files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
dir='$(DESTDIR)$(fincludedir)'; $(am__uninstall_files_from_dir)
ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
@ -5746,9 +5757,9 @@ distclean-tags:
check-am: all-am
check: $(BUILT_SOURCES)
$(MAKE) $(AM_MAKEFLAGS) check-am
all-am: Makefile $(LTLIBRARIES) all-multi $(DATA) config.h
all-am: Makefile $(LTLIBRARIES) all-multi $(DATA) $(HEADERS) config.h
installdirs:
for dir in "$(DESTDIR)$(cafexeclibdir)" "$(DESTDIR)$(myexeclibdir)" "$(DESTDIR)$(toolexeclibdir)" "$(DESTDIR)$(toolexeclibdir)"; do \
for dir in "$(DESTDIR)$(cafexeclibdir)" "$(DESTDIR)$(myexeclibdir)" "$(DESTDIR)$(toolexeclibdir)" "$(DESTDIR)$(toolexeclibdir)" "$(DESTDIR)$(fincludedir)"; do \
test -z "$$dir" || $(MKDIR_P) "$$dir"; \
done
install: $(BUILT_SOURCES)
@ -5808,7 +5819,7 @@ info: info-am
info-am:
install-data-am:
install-data-am: install-nodist_fincludeHEADERS
install-dvi: install-dvi-am
@ -5859,7 +5870,8 @@ ps: ps-am
ps-am:
uninstall-am: uninstall-cafexeclibLTLIBRARIES \
uninstall-myexeclibLTLIBRARIES uninstall-toolexeclibDATA \
uninstall-myexeclibLTLIBRARIES \
uninstall-nodist_fincludeHEADERS uninstall-toolexeclibDATA \
uninstall-toolexeclibLTLIBRARIES
.MAKE: all all-multi check clean-multi distclean-multi install \
@ -5876,15 +5888,17 @@ uninstall-am: uninstall-cafexeclibLTLIBRARIES \
install-data install-data-am install-dvi install-dvi-am \
install-exec install-exec-am install-html install-html-am \
install-info install-info-am install-man install-multi \
install-myexeclibLTLIBRARIES install-pdf install-pdf-am \
install-ps install-ps-am install-strip install-toolexeclibDATA \
install-myexeclibLTLIBRARIES install-nodist_fincludeHEADERS \
install-pdf install-pdf-am install-ps install-ps-am \
install-strip install-toolexeclibDATA \
install-toolexeclibLTLIBRARIES installcheck installcheck-am \
installdirs maintainer-clean maintainer-clean-generic \
maintainer-clean-multi mostlyclean mostlyclean-compile \
mostlyclean-generic mostlyclean-libtool mostlyclean-multi pdf \
pdf-am ps ps-am tags uninstall uninstall-am \
uninstall-cafexeclibLTLIBRARIES uninstall-myexeclibLTLIBRARIES \
uninstall-toolexeclibDATA uninstall-toolexeclibLTLIBRARIES
uninstall-nodist_fincludeHEADERS uninstall-toolexeclibDATA \
uninstall-toolexeclibLTLIBRARIES
@LIBGFOR_USE_SYMVER_SUN_TRUE@@LIBGFOR_USE_SYMVER_TRUE@gfortran.map-sun : $(srcdir)/gfortran.map \
@LIBGFOR_USE_SYMVER_SUN_TRUE@@LIBGFOR_USE_SYMVER_TRUE@ $(top_srcdir)/../contrib/make_sunver.pl \
@ -5904,6 +5918,20 @@ $(patsubst %.c,%.lo,$(notdir $(i_matmull_c))): AM_CFLAGS += -funroll-loops
# Add the -fallow-leading-underscore option when needed
$(patsubst %.F90,%.lo,$(patsubst %.f90,%.lo,$(notdir $(gfor_specific_src)))): AM_FCFLAGS += -fallow-leading-underscore
selected_real_kind.lo selected_int_kind.lo: AM_FCFLAGS += -fallow-leading-underscore
# Add flags for IEEE modules
@IEEE_SUPPORT_TRUE@$(patsubst %.F90,%.lo,$(notdir $(gfor_ieee_src))): AM_FCFLAGS += -Wno-unused-dummy-argument -Wno-c-binding-type -ffree-line-length-0 -fallow-leading-underscore
# Dependencies between IEEE_ARITHMETIC and IEEE_EXCEPTIONS
ieee_arithmetic.lo: ieee/ieee_arithmetic.F90 ieee_exceptions.lo
$(LTPPFCCOMPILE) -c -o $@ $<
ieee_features.mod: ieee_features.lo
:
ieee_exceptions.mod: ieee_exceptions.lo
:
ieee_arithmetic.mod: ieee_arithmetic.lo
:
@onestep_TRUE@libgfortran_c.c libgfortran_f.f90 libgfortran_F.F90:
@onestep_TRUE@ echo > $@
# overrides for libtool perusing the dummy sources
@ -5931,6 +5959,10 @@ selected_real_kind.inc: $(srcdir)/mk-srk-inc.sh
fpu-target.h: $(srcdir)/$(FPU_HOST_HEADER)
cp $(srcdir)/$(FPU_HOST_HEADER) $@
fpu-target.inc: fpu-target.h $(srcdir)/libgfortran.h
grep '^#define GFC_FPE_' < $(top_srcdir)/../gcc/fortran/libgfortran.h > $@ || true
grep '^#define GFC_FPE_' < $(srcdir)/libgfortran.h >> $@ || true
@MAINTAINER_MODE_TRUE@$(i_all_c): m4/all.m4 $(I_M4_DEPS2)
@MAINTAINER_MODE_TRUE@ $(M4) -Dfile=$@ -I$(srcdir)/m4 all.m4 > $@

274
libgfortran/config/fpu-387.h
View file

@ -23,6 +23,8 @@ a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#include <assert.h>
#ifndef __SSE_MATH__
#include "cpuid.h"
#endif
@ -62,24 +64,122 @@ has_sse (void)
#define _FPU_RC_MASK 0x3
/* This structure corresponds to the layout of the block
written by FSTENV. */
typedef struct
{
unsigned short int __control_word;
unsigned short int __unused1;
unsigned short int __status_word;
unsigned short int __unused2;
unsigned short int __tags;
unsigned short int __unused3;
unsigned int __eip;
unsigned short int __cs_selector;
unsigned int __opcode:11;
unsigned int __unused4:5;
unsigned int __data_offset;
unsigned short int __data_selector;
unsigned short int __unused5;
unsigned int __mxcsr;
}
my_fenv_t;
/* Raise the supported floating-point exceptions from EXCEPTS. Other
bits in EXCEPTS are ignored. Code originally borrowed from
libatomic/config/x86/fenv.c. */
static void
local_feraiseexcept (int excepts)
{
if (excepts & _FPU_MASK_IM)
{
float f = 0.0f;
#ifdef __SSE_MATH__
volatile float r __attribute__ ((unused));
__asm__ __volatile__ ("%vdivss\t{%0, %d0|%d0, %0}" : "+x" (f));
r = f; /* Needed to trigger exception. */
#else
__asm__ __volatile__ ("fdiv\t{%y0, %0|%0, %y0}" : "+t" (f));
/* No need for fwait, exception is triggered by emitted fstp. */
#endif
}
if (excepts & _FPU_MASK_DM)
{
my_fenv_t temp;
__asm__ __volatile__ ("fnstenv\t%0" : "=m" (temp));
temp.__status_word |= _FPU_MASK_DM;
__asm__ __volatile__ ("fldenv\t%0" : : "m" (temp));
__asm__ __volatile__ ("fwait");
}
if (excepts & _FPU_MASK_ZM)
{
float f = 1.0f, g = 0.0f;
#ifdef __SSE_MATH__
volatile float r __attribute__ ((unused));
__asm__ __volatile__ ("%vdivss\t{%1, %d0|%d0, %1}" : "+x" (f) : "xm" (g));
r = f; /* Needed to trigger exception. */
#else
__asm__ __volatile__ ("fdivs\t%1" : "+t" (f) : "m" (g));
/* No need for fwait, exception is triggered by emitted fstp. */
#endif
}
if (excepts & _FPU_MASK_OM)
{
my_fenv_t temp;
__asm__ __volatile__ ("fnstenv\t%0" : "=m" (temp));
temp.__status_word |= _FPU_MASK_OM;
__asm__ __volatile__ ("fldenv\t%0" : : "m" (temp));
__asm__ __volatile__ ("fwait");
}
if (excepts & _FPU_MASK_UM)
{
my_fenv_t temp;
__asm__ __volatile__ ("fnstenv\t%0" : "=m" (temp));
temp.__status_word |= _FPU_MASK_UM;
__asm__ __volatile__ ("fldenv\t%0" : : "m" (temp));
__asm__ __volatile__ ("fwait");
}
if (excepts & _FPU_MASK_PM)
{
float f = 1.0f, g = 3.0f;
#ifdef __SSE_MATH__
volatile float r __attribute__ ((unused));
__asm__ __volatile__ ("%vdivss\t{%1, %d0|%d0, %1}" : "+x" (f) : "xm" (g));
r = f; /* Needed to trigger exception. */
#else
__asm__ __volatile__ ("fdivs\t%1" : "+t" (f) : "m" (g));
/* No need for fwait, exception is triggered by emitted fstp. */
#endif
}
}
void
set_fpu (void)
set_fpu_trap_exceptions (int trap, int notrap)
{
int excepts = 0;
int exc_set = 0, exc_clr = 0;
unsigned short cw;
if (trap & GFC_FPE_INVALID) exc_set |= _FPU_MASK_IM;
if (trap & GFC_FPE_DENORMAL) exc_set |= _FPU_MASK_DM;
if (trap & GFC_FPE_ZERO) exc_set |= _FPU_MASK_ZM;
if (trap & GFC_FPE_OVERFLOW) exc_set |= _FPU_MASK_OM;
if (trap & GFC_FPE_UNDERFLOW) exc_set |= _FPU_MASK_UM;
if (trap & GFC_FPE_INEXACT) exc_set |= _FPU_MASK_PM;
if (notrap & GFC_FPE_INVALID) exc_clr |= _FPU_MASK_IM;
if (notrap & GFC_FPE_DENORMAL) exc_clr |= _FPU_MASK_DM;
if (notrap & GFC_FPE_ZERO) exc_clr |= _FPU_MASK_ZM;
if (notrap & GFC_FPE_OVERFLOW) exc_clr |= _FPU_MASK_OM;
if (notrap & GFC_FPE_UNDERFLOW) exc_clr |= _FPU_MASK_UM;
if (notrap & GFC_FPE_INEXACT) exc_clr |= _FPU_MASK_PM;
__asm__ __volatile__ ("fstcw\t%0" : "=m" (cw));
if (options.fpe & GFC_FPE_INVALID) excepts |= _FPU_MASK_IM;
if (options.fpe & GFC_FPE_DENORMAL) excepts |= _FPU_MASK_DM;
if (options.fpe & GFC_FPE_ZERO) excepts |= _FPU_MASK_ZM;
if (options.fpe & GFC_FPE_OVERFLOW) excepts |= _FPU_MASK_OM;
if (options.fpe & GFC_FPE_UNDERFLOW) excepts |= _FPU_MASK_UM;
if (options.fpe & GFC_FPE_INEXACT) excepts |= _FPU_MASK_PM;
cw |= _FPU_MASK_ALL;
cw &= ~excepts;
cw |= exc_clr;
cw &= ~exc_set;
__asm__ __volatile__ ("fnclex\n\tfldcw\t%0" : : "m" (cw));
@ -90,8 +190,8 @@ set_fpu (void)
__asm__ __volatile__ ("%vstmxcsr\t%0" : "=m" (cw_sse));
/* The SSE exception masks are shifted by 7 bits. */
cw_sse |= _FPU_MASK_ALL << 7;
cw_sse &= ~(excepts << 7);
cw_sse |= (exc_clr << 7);
cw_sse &= ~(exc_set << 7);
/* Clear stalled exception flags. */
cw_sse &= ~_FPU_EX_ALL;
@ -100,6 +200,47 @@ set_fpu (void)
}
}
void
set_fpu (void)
{
set_fpu_trap_exceptions (options.fpe, 0);
}
int
get_fpu_trap_exceptions (void)
{
int res = 0;
unsigned short cw;
__asm__ __volatile__ ("fstcw\t%0" : "=m" (cw));
cw &= _FPU_MASK_ALL;
if (has_sse())
{
unsigned int cw_sse;
__asm__ __volatile__ ("%vstmxcsr\t%0" : "=m" (cw_sse));
/* The SSE exception masks are shifted by 7 bits. */
cw = cw | ((cw_sse >> 7) & _FPU_MASK_ALL);
}
if (~cw & _FPU_MASK_IM) res |= GFC_FPE_INVALID;
if (~cw & _FPU_MASK_DM) res |= GFC_FPE_DENORMAL;
if (~cw & _FPU_MASK_ZM) res |= GFC_FPE_ZERO;
if (~cw & _FPU_MASK_OM) res |= GFC_FPE_OVERFLOW;
if (~cw & _FPU_MASK_UM) res |= GFC_FPE_UNDERFLOW;
if (~cw & _FPU_MASK_PM) res |= GFC_FPE_INEXACT;
return res;
}
int
support_fpu_trap (int flag __attribute__((unused)))
{
return 1;
}
int
get_fpu_except_flags (void)
{
@ -107,7 +248,7 @@ get_fpu_except_flags (void)
int excepts;
int result = 0;
__asm__ __volatile__ ("fnstsw\t%0" : "=a" (cw));
__asm__ __volatile__ ("fnstsw\t%0" : "=am" (cw));
excepts = cw;
if (has_sse())
@ -130,6 +271,70 @@ get_fpu_except_flags (void)
return result;
}
void
set_fpu_except_flags (int set, int clear)
{
my_fenv_t temp;
int exc_set = 0, exc_clr = 0;
/* Translate from GFC_PE_* values to _FPU_MASK_* values. */
if (set & GFC_FPE_INVALID)
exc_set |= _FPU_MASK_IM;
if (clear & GFC_FPE_INVALID)
exc_clr |= _FPU_MASK_IM;
if (set & GFC_FPE_DENORMAL)
exc_set |= _FPU_MASK_DM;
if (clear & GFC_FPE_DENORMAL)
exc_clr |= _FPU_MASK_DM;
if (set & GFC_FPE_ZERO)
exc_set |= _FPU_MASK_ZM;
if (clear & GFC_FPE_ZERO)
exc_clr |= _FPU_MASK_ZM;
if (set & GFC_FPE_OVERFLOW)
exc_set |= _FPU_MASK_OM;
if (clear & GFC_FPE_OVERFLOW)
exc_clr |= _FPU_MASK_OM;
if (set & GFC_FPE_UNDERFLOW)
exc_set |= _FPU_MASK_UM;
if (clear & GFC_FPE_UNDERFLOW)
exc_clr |= _FPU_MASK_UM;
if (set & GFC_FPE_INEXACT)
exc_set |= _FPU_MASK_PM;
if (clear & GFC_FPE_INEXACT)
exc_clr |= _FPU_MASK_PM;
/* Change the flags. This is tricky on 387 (unlike SSE), because we have
FNSTSW but no FLDSW instruction. */
__asm__ __volatile__ ("fnstenv\t%0" : "=m" (temp));
temp.__status_word &= ~exc_clr;
__asm__ __volatile__ ("fldenv\t%0" : : "m" (temp));
/* Change the flags on SSE. */
if (has_sse())
{
unsigned int cw_sse;
__asm__ __volatile__ ("%vstmxcsr\t%0" : "=m" (cw_sse));
cw_sse &= ~exc_clr;
__asm__ __volatile__ ("%vldmxcsr\t%0" : : "m" (cw_sse));
}
local_feraiseexcept (exc_set);
}
int
support_fpu_flag (int flag __attribute__((unused)))
{
return 1;
}
void
set_fpu_rounding_mode (int round)
{
@ -213,3 +418,44 @@ get_fpu_rounding_mode (void)
return GFC_FPE_INVALID; /* Should be unreachable. */
}
}
int
support_fpu_rounding_mode (int mode __attribute__((unused)))
{
return 1;
}
void
get_fpu_state (void *state)
{
my_fenv_t *envp = state;
/* Check we can actually store the FPU state in the allocated size. */
assert (sizeof(my_fenv_t) <= (size_t) GFC_FPE_STATE_BUFFER_SIZE);
__asm__ __volatile__ ("fnstenv\t%0" : "=m" (*envp));
/* fnstenv has the side effect of masking all exceptions, so we need
to restore the control word after that. */
__asm__ __volatile__ ("fldcw\t%0" : : "m" (envp->__control_word));
if (has_sse())
__asm__ __volatile__ ("%vstmxcsr\t%0" : "=m" (envp->__mxcsr));
}
void
set_fpu_state (void *state)
{
my_fenv_t *envp = state;
/* Check we can actually store the FPU state in the allocated size. */
assert (sizeof(my_fenv_t) <= (size_t) GFC_FPE_STATE_BUFFER_SIZE);
/* glibc sources (sysdeps/x86_64/fpu/fesetenv.c) do something more
complex than this, but I think it suffices in our case. */
__asm__ __volatile__ ("fldenv\t%0" : : "m" (*envp));
if (has_sse())
__asm__ __volatile__ ("%vldmxcsr\t%0" : : "m" (envp->__mxcsr));
}

267
libgfortran/config/fpu-aix.h
View file

@ -33,15 +33,103 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
#include <fpxcp.h>
#endif
#ifdef HAVE_FENV_H
#include <fenv.h>
#endif
void
set_fpu_trap_exceptions (int trap, int notrap)
{
fptrap_t mode_set = 0, mode_clr = 0;
#ifdef TRP_INVALID
if (trap & GFC_FPE_INVALID)
mode_set |= TRP_INVALID;
if (notrap & GFC_FPE_INVALID)
mode_clr |= TRP_INVALID;
#endif
#ifdef TRP_DIV_BY_ZERO
if (trap & GFC_FPE_ZERO)
mode_set |= TRP_DIV_BY_ZERO;
if (notrap & GFC_FPE_ZERO)
mode_clr |= TRP_DIV_BY_ZERO;
#endif
#ifdef TRP_OVERFLOW
if (trap & GFC_FPE_OVERFLOW)
mode_set |= TRP_OVERFLOW;
if (notrap & GFC_FPE_OVERFLOW)
mode_clr |= TRP_OVERFLOW;
#endif
#ifdef TRP_UNDERFLOW
if (trap & GFC_FPE_UNDERFLOW)
mode_set |= TRP_UNDERFLOW;
if (notrap & GFC_FPE_UNDERFLOW)
mode_clr |= TRP_UNDERFLOW;
#endif
#ifdef TRP_INEXACT
if (trap & GFC_FPE_INEXACT)
mode_set |= TRP_INEXACT;
if (notrap & GFC_FPE_INEXACT)
mode_clr |= TRP_INEXACT;
#endif
fp_trap (FP_TRAP_SYNC);
fp_enable (mode_set);
fp_disable (mode_clr);
}
int
get_fpu_trap_exceptions (void)
{
int res = 0;
#ifdef TRP_INVALID
if (fp_is_enabled (TRP_INVALID))
res |= GFC_FPE_INVALID;
#endif
#ifdef TRP_DIV_BY_ZERO
if (fp_is_enabled (TRP_DIV_BY_ZERO))
res |= GFC_FPE_ZERO;
#endif
#ifdef TRP_OVERFLOW
if (fp_is_enabled (TRP_OVERFLOW))
res |= GFC_FPE_OVERFLOW;
#endif
#ifdef TRP_UNDERFLOW
if (fp_is_enabled (TRP_UNDERFLOW))
res |= GFC_FPE_UNDERFLOW;
#endif
#ifdef TRP_INEXACT
if (fp_is_enabled (TRP_INEXACT))
res |= GFC_FPE_INEXACT;
#endif
return res;
}
int
support_fpu_trap (int flag)
{
return support_fpu_flag (flag);
}
void
set_fpu (void)
{
fptrap_t mode = 0;
#ifndef TRP_INVALID
if (options.fpe & GFC_FPE_INVALID)
#ifdef TRP_INVALID
mode |= TRP_INVALID;
#else
estr_write ("Fortran runtime warning: IEEE 'invalid operation' "
"exception not supported.\n");
#endif
@ -50,43 +138,33 @@ set_fpu (void)
estr_write ("Fortran runtime warning: Floating point 'denormal operand' "
"exception not supported.\n");
#ifndef TRP_DIV_BY_ZERO
if (options.fpe & GFC_FPE_ZERO)
#ifdef TRP_DIV_BY_ZERO
mode |= TRP_DIV_BY_ZERO;
#else
estr_write ("Fortran runtime warning: IEEE 'division by zero' "
"exception not supported.\n");
#endif
#ifndef TRP_OVERFLOW
if (options.fpe & GFC_FPE_OVERFLOW)
#ifdef TRP_OVERFLOW
mode |= TRP_OVERFLOW;
#else
estr_write ("Fortran runtime warning: IEEE 'overflow' "
"exception not supported.\n");
#endif
#ifndef TRP_UNDERFLOW
if (options.fpe & GFC_FPE_UNDERFLOW)
#ifdef TRP_UNDERFLOW
mode |= TRP_UNDERFLOW;
#else
estr_write ("Fortran runtime warning: IEEE 'underflow' "
"exception not supported.\n");
#endif
#ifndef TRP_INEXACT
if (options.fpe & GFC_FPE_INEXACT)
#ifdef TRP_INEXACT
mode |= TRP_INEXACT;
#else
estr_write ("Fortran runtime warning: IEEE 'inexact' "
"exception not supported.\n");
#endif
fp_trap(FP_TRAP_SYNC);
fp_enable(mode);
set_fpu_trap_exceptions (options.fpe, 0);
}
int
get_fpu_except_flags (void)
{
@ -118,6 +196,98 @@ get_fpu_except_flags (void)
}
void
set_fpu_except_flags (int set, int clear)
{
int exc_set = 0, exc_clr = 0;
#ifdef FP_INVALID
if (set & GFC_FPE_INVALID)
exc_set |= FP_INVALID;
else if (clear & GFC_FPE_INVALID)
exc_clr |= FP_INVALID;
#endif
#ifdef FP_DIV_BY_ZERO
if (set & GFC_FPE_ZERO)
exc_set |= FP_DIV_BY_ZERO;
else if (clear & GFC_FPE_ZERO)
exc_clr |= FP_DIV_BY_ZERO;
#endif
#ifdef FP_OVERFLOW
if (set & GFC_FPE_OVERFLOW)
exc_set |= FP_OVERFLOW;
else if (clear & GFC_FPE_OVERFLOW)
exc_clr |= FP_OVERFLOW;
#endif
#ifdef FP_UNDERFLOW
if (set & GFC_FPE_UNDERFLOW)
exc_set |= FP_UNDERFLOW;
else if (clear & GFC_FPE_UNDERFLOW)
exc_clr |= FP_UNDERFLOW;
#endif
/* AIX does not have FP_DENORMAL. */
#ifdef FP_INEXACT
if (set & GFC_FPE_INEXACT)
exc_set |= FP_INEXACT;
else if (clear & GFC_FPE_INEXACT)
exc_clr |= FP_INEXACT;
#endif
fp_clr_flag (exc_clr);
fp_set_flag (exc_set);
}
int
support_fpu_flag (int flag)
{
if (flag & GFC_FPE_INVALID)
{
#ifndef FP_INVALID
return 0;
#endif
}
else if (flag & GFC_FPE_ZERO)
{
#ifndef FP_DIV_BY_ZERO
return 0;
#endif
}
else if (flag & GFC_FPE_OVERFLOW)
{
#ifndef FP_OVERFLOW
return 0;
#endif
}
else if (flag & GFC_FPE_UNDERFLOW)
{
#ifndef FP_UNDERFLOW
return 0;
#endif
}
else if (flag & GFC_FPE_DENORMAL)
{
/* AIX does not support denormal flag. */
return 0;
}
else if (flag & GFC_FPE_INEXACT)
{
#ifndef FP_INEXACT
return 0;
#endif
}
return 1;
}
int
get_fpu_rounding_mode (void)
{
@ -188,3 +358,60 @@ set_fpu_rounding_mode (int mode)
fesetround (rnd_mode);
}
int
support_fpu_rounding_mode (int mode)
{
switch (mode)
{
case GFC_FPE_TONEAREST:
#ifdef FE_TONEAREST
return 1;
#else
return 0;
#endif
#ifdef FE_UPWARD
return 1;
#else
return 0;
#endif
#ifdef FE_DOWNWARD
return 1;
#else
return 0;
#endif
#ifdef FE_TOWARDZERO
return 1;
#else
return 0;
#endif
default:
return 0;
}
}
void
get_fpu_state (void *state)
{
/* Check we can actually store the FPU state in the allocated size. */
assert (sizeof(fenv_t) <= GFC_FPE_STATE_BUFFER_SIZE);
fegetenv (state);
}
void
set_fpu_state (void *state)
{
/* Check we can actually store the FPU state in the allocated size. */
assert (sizeof(fenv_t) <= GFC_FPE_STATE_BUFFER_SIZE);
fesetenv (state);
}

6
libgfortran/config/fpu-generic.h
View file

@ -51,6 +51,12 @@ set_fpu (void)
"exception not supported.\n");
}
void
set_fpu_trap_exceptions (int trap __attribute__((unused)),
int notrap __attribute__((unused)))
{
}
int
get_fpu_except_flags (void)
{

273
libgfortran/config/fpu-glibc.h
View file

@ -27,63 +27,141 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
feenableexcept function in fenv.h to set individual exceptions
(there's nothing to do that in C99). */
#include <assert.h>
#ifdef HAVE_FENV_H
#include <fenv.h>
#endif
void set_fpu_trap_exceptions (int trap, int notrap)
{
#ifdef FE_INVALID
if (trap & GFC_FPE_INVALID)
feenableexcept (FE_INVALID);
if (notrap & GFC_FPE_INVALID)
fedisableexcept (FE_INVALID);
#endif
/* glibc does never have a FE_DENORMAL. */
#ifdef FE_DENORMAL
if (trap & GFC_FPE_DENORMAL)
feenableexcept (FE_DENORMAL);
if (notrap & GFC_FPE_DENORMAL)
fedisableexcept (FE_DENORMAL);
#endif
#ifdef FE_DIVBYZERO
if (trap & GFC_FPE_ZERO)
feenableexcept (FE_DIVBYZERO);
if (notrap & GFC_FPE_ZERO)
fedisableexcept (FE_DIVBYZERO);
#endif
#ifdef FE_OVERFLOW
if (trap & GFC_FPE_OVERFLOW)
feenableexcept (FE_OVERFLOW);
if (notrap & GFC_FPE_OVERFLOW)
fedisableexcept (FE_OVERFLOW);
#endif
#ifdef FE_UNDERFLOW
if (trap & GFC_FPE_UNDERFLOW)
feenableexcept (FE_UNDERFLOW);
if (notrap & GFC_FPE_UNDERFLOW)
fedisableexcept (FE_UNDERFLOW);
#endif
#ifdef FE_INEXACT
if (trap & GFC_FPE_INEXACT)
feenableexcept (FE_INEXACT);
if (notrap & GFC_FPE_INEXACT)
fedisableexcept (FE_INEXACT);
#endif
}
int
get_fpu_trap_exceptions (void)
{
int exceptions = fegetexcept ();
int res = 0;
#ifdef FE_INVALID
if (exceptions & FE_INVALID) res |= GFC_FPE_INVALID;
#endif
#ifdef FE_DENORMAL
if (exceptions & FE_DENORMAL) res |= GFC_FPE_DENORMAL;
#endif
#ifdef FE_DIVBYZERO
if (exceptions & FE_DIVBYZERO) res |= GFC_FPE_ZERO;
#endif
#ifdef FE_OVERFLOW
if (exceptions & FE_OVERFLOW) res |= GFC_FPE_OVERFLOW;
#endif
#ifdef FE_UNDERFLOW
if (exceptions & FE_UNDERFLOW) res |= GFC_FPE_UNDERFLOW;
#endif
#ifdef FE_INEXACT
if (exceptions & FE_INEXACT) res |= GFC_FPE_INEXACT;
#endif
return res;
}
int
support_fpu_trap (int flag)
{
return support_fpu_flag (flag);
}
void set_fpu (void)
{
if (FE_ALL_EXCEPT != 0)
fedisableexcept (FE_ALL_EXCEPT);
#ifndef FE_INVALID
if (options.fpe & GFC_FPE_INVALID)
#ifdef FE_INVALID
feenableexcept (FE_INVALID);
#else
estr_write ("Fortran runtime warning: IEEE 'invalid operation' "
"exception not supported.\n");
#endif
/* glibc does never have a FE_DENORMAL. */
#ifndef FE_DENORMAL
if (options.fpe & GFC_FPE_DENORMAL)
#ifdef FE_DENORMAL
feenableexcept (FE_DENORMAL);
#else
estr_write ("Fortran runtime warning: Floating point 'denormal operand' "
"exception not supported.\n");
#endif
#ifndef FE_DIVBYZERO
if (options.fpe & GFC_FPE_ZERO)
#ifdef FE_DIVBYZERO
feenableexcept (FE_DIVBYZERO);
#else
estr_write ("Fortran runtime warning: IEEE 'division by zero' "
"exception not supported.\n");
#endif
#ifndef FE_OVERFLOW
if (options.fpe & GFC_FPE_OVERFLOW)
#ifdef FE_OVERFLOW
feenableexcept (FE_OVERFLOW);
#else
estr_write ("Fortran runtime warning: IEEE 'overflow' "
"exception not supported.\n");
#endif
#ifndef FE_UNDERFLOW
if (options.fpe & GFC_FPE_UNDERFLOW)
#ifdef FE_UNDERFLOW
feenableexcept (FE_UNDERFLOW);
#else
estr_write ("Fortran runtime warning: IEEE 'underflow' "
"exception not supported.\n");
#endif
#ifndef FE_INEXACT
if (options.fpe & GFC_FPE_INEXACT)
#ifdef FE_INEXACT
feenableexcept (FE_INEXACT);
#else
estr_write ("Fortran runtime warning: IEEE 'inexact' "
"exception not supported.\n");
#endif
set_fpu_trap_exceptions (options.fpe, 0);
}
@ -129,6 +207,102 @@ get_fpu_except_flags (void)
}
void
set_fpu_except_flags (int set, int clear)
{
int exc_set = 0, exc_clr = 0;
#ifdef FE_INVALID
if (set & GFC_FPE_INVALID)
exc_set |= FE_INVALID;
else if (clear & GFC_FPE_INVALID)
exc_clr |= FE_INVALID;
#endif
#ifdef FE_DIVBYZERO
if (set & GFC_FPE_ZERO)
exc_set |= FE_DIVBYZERO;
else if (clear & GFC_FPE_ZERO)
exc_clr |= FE_DIVBYZERO;
#endif
#ifdef FE_OVERFLOW
if (set & GFC_FPE_OVERFLOW)
exc_set |= FE_OVERFLOW;
else if (clear & GFC_FPE_OVERFLOW)
exc_clr |= FE_OVERFLOW;
#endif
#ifdef FE_UNDERFLOW
if (set & GFC_FPE_UNDERFLOW)
exc_set |= FE_UNDERFLOW;
else if (clear & GFC_FPE_UNDERFLOW)
exc_clr |= FE_UNDERFLOW;
#endif
#ifdef FE_DENORMAL
if (set & GFC_FPE_DENORMAL)
exc_set |= FE_DENORMAL;
else if (clear & GFC_FPE_DENORMAL)
exc_clr |= FE_DENORMAL;
#endif
#ifdef FE_INEXACT
if (set & GFC_FPE_INEXACT)
exc_set |= FE_INEXACT;
else if (clear & GFC_FPE_INEXACT)
exc_clr |= FE_INEXACT;
#endif
feclearexcept (exc_clr);
feraiseexcept (exc_set);
}
int
support_fpu_flag (int flag)
{
if (flag & GFC_FPE_INVALID)
{
#ifndef FE_INVALID
return 0;
#endif
}
else if (flag & GFC_FPE_ZERO)
{
#ifndef FE_DIVBYZERO
return 0;
#endif
}
else if (flag & GFC_FPE_OVERFLOW)
{
#ifndef FE_OVERFLOW
return 0;
#endif
}
else if (flag & GFC_FPE_UNDERFLOW)
{
#ifndef FE_UNDERFLOW
return 0;
#endif
}
else if (flag & GFC_FPE_DENORMAL)
{
#ifndef FE_DENORMAL
return 0;
#endif
}
else if (flag & GFC_FPE_INEXACT)
{
#ifndef FE_INEXACT
return 0;
#endif
}
return 1;
}
int
get_fpu_rounding_mode (void)
{
@ -199,3 +373,60 @@ set_fpu_rounding_mode (int mode)
fesetround (rnd_mode);
}
int
support_fpu_rounding_mode (int mode)
{
switch (mode)
{
case GFC_FPE_TONEAREST:
#ifdef FE_TONEAREST
return 1;
#else
return 0;
#endif
#ifdef FE_UPWARD
return 1;
#else
return 0;
#endif
#ifdef FE_DOWNWARD
return 1;
#else
return 0;
#endif
#ifdef FE_TOWARDZERO
return 1;
#else
return 0;
#endif
default:
return 0;
}
}
void
get_fpu_state (void *state)
{
/* Check we can actually store the FPU state in the allocated size. */
assert (sizeof(fenv_t) <= GFC_FPE_STATE_BUFFER_SIZE);
fegetenv (state);
}
void
set_fpu_state (void *state)
{
/* Check we can actually store the FPU state in the allocated size. */
assert (sizeof(fenv_t) <= GFC_FPE_STATE_BUFFER_SIZE);
fesetenv (state);
}

347
libgfortran/config/fpu-sysv.h
View file

@ -25,73 +25,174 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
/* FPU-related code for SysV platforms with fpsetmask(). */
/* BSD and Solaris systems have slightly different types and functions
naming. We deal with these here, to simplify the code below. */
#if HAVE_FP_EXCEPT
# define FP_EXCEPT_TYPE fp_except
#elif HAVE_FP_EXCEPT_T
# define FP_EXCEPT_TYPE fp_except_t
#else
choke me
#endif
#if HAVE_FP_RND
# define FP_RND_TYPE fp_rnd
#elif HAVE_FP_RND_T
# define FP_RND_TYPE fp_rnd_t
#else
choke me
#endif
#if HAVE_FPSETSTICKY
# define FPSETSTICKY fpsetsticky
#elif HAVE_FPRESETSTICKY
# define FPSETSTICKY fpresetsticky
#else
choke me
#endif
void
set_fpu (void)
set_fpu_trap_exceptions (int trap, int notrap)
{
int cw = 0;
FP_EXCEPT_TYPE cw = fpgetmask();
if (options.fpe & GFC_FPE_INVALID)
#ifdef FP_X_INV
if (trap & GFC_FPE_INVALID)
cw |= FP_X_INV;
#else
estr_write ("Fortran runtime warning: IEEE 'invalid operation' "
"exception not supported.\n");
if (notrap & GFC_FPE_INVALID)
cw &= ~FP_X_INV;
#endif
if (options.fpe & GFC_FPE_DENORMAL)
#ifdef FP_X_DNML
if (trap & GFC_FPE_DENORMAL)
cw |= FP_X_DNML;
#else
estr_write ("Fortran runtime warning: Floating point 'denormal operand' "
"exception not supported.\n");
if (notrap & GFC_FPE_DENORMAL)
cw &= ~FP_X_DNML;
#endif
if (options.fpe & GFC_FPE_ZERO)
#ifdef FP_X_DZ
if (trap & GFC_FPE_ZERO)
cw |= FP_X_DZ;
#else
estr_write ("Fortran runtime warning: IEEE 'division by zero' "
"exception not supported.\n");
if (notrap & GFC_FPE_ZERO)
cw &= ~FP_X_DZ;
#endif
if (options.fpe & GFC_FPE_OVERFLOW)
#ifdef FP_X_OFL
if (trap & GFC_FPE_OVERFLOW)
cw |= FP_X_OFL;
#else
estr_write ("Fortran runtime warning: IEEE 'overflow' "
"exception not supported.\n");
if (notrap & GFC_FPE_OVERFLOW)
cw &= ~FP_X_OFL;
#endif
if (options.fpe & GFC_FPE_UNDERFLOW)
#ifdef FP_X_UFL
if (trap & GFC_FPE_UNDERFLOW)
cw |= FP_X_UFL;
#else
estr_write ("Fortran runtime warning: IEEE 'underflow' "
"exception not supported.\n");
if (notrap & GFC_FPE_UNDERFLOW)
cw &= ~FP_X_UFL;
#endif
if (options.fpe & GFC_FPE_INEXACT)
#ifdef FP_X_IMP
if (trap & GFC_FPE_INEXACT)
cw |= FP_X_IMP;
#else
estr_write ("Fortran runtime warning: IEEE 'inexact' "
"exception not supported.\n");
if (notrap & GFC_FPE_INEXACT)
cw &= ~FP_X_IMP;
#endif
fpsetmask(cw);
}
int
get_fpu_trap_exceptions (void)
{
int res = 0;
FP_EXCEPT_TYPE cw = fpgetmask();
#ifdef FP_X_INV
if (cw & FP_X_INV) res |= GFC_FPE_INVALID;
#endif
#ifdef FP_X_DNML
if (cw & FP_X_DNML) res |= GFC_FPE_DENORMAL;
#endif
#ifdef FP_X_DZ
if (cw & FP_X_DZ) res |= GFC_FPE_ZERO;
#endif
#ifdef FP_X_OFL
if (cw & FP_X_OFL) res |= GFC_FPE_OVERFLOW;
#endif
#ifdef FP_X_UFL
if (cw & FP_X_UFL) res |= GFC_FPE_UNDERFLOW;
#endif
#ifdef FP_X_IMP
if (cw & FP_X_IMP) res |= GFC_FPE_INEXACT;
#endif
return res;
}
int
support_fpu_trap (int flag)
{
return support_fpu_flag (flag);
}
void
set_fpu (void)
{
#ifndef FP_X_INV
if (options.fpe & GFC_FPE_INVALID)
estr_write ("Fortran runtime warning: IEEE 'invalid operation' "
"exception not supported.\n");
#endif
#ifndef FP_X_DNML
if (options.fpe & GFC_FPE_DENORMAL)
estr_write ("Fortran runtime warning: Floating point 'denormal operand' "
"exception not supported.\n");
#endif
#ifndef FP_X_DZ
if (options.fpe & GFC_FPE_ZERO)
estr_write ("Fortran runtime warning: IEEE 'division by zero' "
"exception not supported.\n");
#endif
#ifndef FP_X_OFL
if (options.fpe & GFC_FPE_OVERFLOW)
estr_write ("Fortran runtime warning: IEEE 'overflow' "
"exception not supported.\n");
#endif
#ifndef FP_X_UFL
if (options.fpe & GFC_FPE_UNDERFLOW)
estr_write ("Fortran runtime warning: IEEE 'underflow' "
"exception not supported.\n");
#endif
#ifndef FP_X_IMP
if (options.fpe & GFC_FPE_INEXACT)
estr_write ("Fortran runtime warning: IEEE 'inexact' "
"exception not supported.\n");
#endif
set_fpu_trap_exceptions (options.fpe, 0);
}
int
get_fpu_except_flags (void)
{
int result;
#if HAVE_FP_EXCEPT
fp_except set_excepts;
#elif HAVE_FP_EXCEPT_T
fp_except_t set_excepts;
#else
choke me
#endif
FP_EXCEPT_TYPE set_excepts;
result = 0;
set_excepts = fpgetsticky ();
@ -130,6 +231,103 @@ get_fpu_except_flags (void)
}
void
set_fpu_except_flags (int set, int clear)
{
FP_EXCEPT_TYPE flags;
flags = fpgetsticky ();
#ifdef FP_X_INV
if (set & GFC_FPE_INVALID)
flags |= FP_X_INV;
if (clear & GFC_FPE_INVALID)
flags &= ~FP_X_INV;
#endif
#ifdef FP_X_DZ
if (set & GFC_FPE_ZERO)
flags |= FP_X_DZ;
if (clear & GFC_FPE_ZERO)
flags &= ~FP_X_DZ;
#endif
#ifdef FP_X_OFL
if (set & GFC_FPE_OVERFLOW)
flags |= FP_X_OFL;
if (clear & GFC_FPE_OVERFLOW)
flags &= ~FP_X_OFL;
#endif
#ifdef FP_X_UFL
if (set & GFC_FPE_UNDERFLOW)
flags |= FP_X_UFL;
if (clear & GFC_FPE_UNDERFLOW)
flags &= ~FP_X_UFL;
#endif
#ifdef FP_X_DNML
if (set & GFC_FPE_DENORMAL)
flags |= FP_X_DNML;
if (clear & GFC_FPE_DENORMAL)
flags &= ~FP_X_DNML;
#endif
#ifdef FP_X_IMP
if (set & GFC_FPE_INEXACT)
flags |= FP_X_IMP;
if (clear & GFC_FPE_INEXACT)
flags &= ~FP_X_IMP;
#endif
FPSETSTICKY (flags);
}
int
support_fpu_flag (int flag)
{
if (flag & GFC_FPE_INVALID)
{
#ifndef FP_X_INV
return 0;
#endif
}
else if (flag & GFC_FPE_ZERO)
{
#ifndef FP_X_DZ
return 0;
#endif
}
else if (flag & GFC_FPE_OVERFLOW)
{
#ifndef FP_X_OFL
return 0;
#endif
}
else if (flag & GFC_FPE_UNDERFLOW)
{
#ifndef FP_X_UFL
return 0;
#endif
}
else if (flag & GFC_FPE_DENORMAL)
{
#ifndef FP_X_DNML
return 0;
#endif
}
else if (flag & GFC_FPE_INEXACT)
{
#ifndef FP_X_IMP
return 0;
#endif
}
return 1;
}
int
get_fpu_rounding_mode (void)
{
@ -163,13 +361,7 @@ get_fpu_rounding_mode (void)
void
set_fpu_rounding_mode (int mode)
{
#if HAVE_FP_RND
fp_rnd rnd_mode;
#elif HAVE_FP_RND_T
fp_rnd_t rnd_mode;
#else
choke me
#endif
FP_RND_TYPE rnd_mode;
switch (mode)
{
@ -201,3 +393,78 @@ set_fpu_rounding_mode (int mode)
}
fpsetround (rnd_mode);
}
int
support_fpu_rounding_mode (int mode)
{
switch (mode)
{
case GFC_FPE_TONEAREST:
#ifdef FP_RN
return 1;
#else
return 0;
#endif
case GFC_FPE_UPWARD:
#ifdef FP_RP
return 1;
#else
return 0;
#endif
case GFC_FPE_DOWNWARD:
#ifdef FP_RM
return 1;
#else
return 0;
#endif
case GFC_FPE_TOWARDZERO:
#ifdef FP_RZ
return 1;
#else
return 0;
#endif
default:
return 0;
}
}
typedef struct
{
FP_EXCEPT_TYPE mask;
FP_EXCEPT_TYPE sticky;
FP_RND_TYPE round;
} fpu_state_t;
void
get_fpu_state (void *s)
{
fpu_state_t *state = s;
/* Check we can actually store the FPU state in the allocated size. */
assert (sizeof(fpu_state_t) <= GFC_FPE_STATE_BUFFER_SIZE);
state->mask = fpgetmask ();
state->sticky = fpgetsticky ();
state->round = fpgetround ();
}
void
set_fpu_state (void *s)
{
fpu_state_t *state = s;
/* Check we can actually store the FPU state in the allocated size. */
assert (sizeof(fpu_state_t) <= GFC_FPE_STATE_BUFFER_SIZE);
fpsetmask (state->mask);
FPSETSTICKY (state->sticky);
fpsetround (state->round);
}

24
libgfortran/configure vendored
View file

@ -606,6 +606,9 @@ am__EXEEXT_TRUE
LTLIBOBJS
LIBOBJS
IEEE_FLAGS
IEEE_SUPPORT
IEEE_SUPPORT_FALSE
IEEE_SUPPORT_TRUE
FPU_HOST_HEADER
LIBGFOR_BUILD_QUAD_FALSE
LIBGFOR_BUILD_QUAD_TRUE
@ -12346,7 +12349,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
#line 12349 "configure"
#line 12352 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@ -12452,7 +12455,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
#line 12455 "configure"
#line 12458 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@ -26119,9 +26122,22 @@ fi
. ${srcdir}/configure.host
{ $as_echo "$as_me:${as_lineno-$LINENO}: FPU dependent file will be ${fpu_host}.h" >&5
$as_echo "$as_me: FPU dependent file will be ${fpu_host}.h" >&6;}
{ $as_echo "$as_me:${as_lineno-$LINENO}: Support for IEEE modules: ${ieee_support}" >&5
$as_echo "$as_me: Support for IEEE modules: ${ieee_support}" >&6;}
FPU_HOST_HEADER=config/${fpu_host}.h
# Whether we will build the IEEE modules
if test x${ieee_support} = xyes; then
IEEE_SUPPORT_TRUE=
IEEE_SUPPORT_FALSE='#'
else
IEEE_SUPPORT_TRUE='#'
IEEE_SUPPORT_FALSE=
fi
# Some targets require additional compiler options for IEEE compatibility.
IEEE_FLAGS="${ieee_flags}"
@ -26765,6 +26781,10 @@ if test -z "${LIBGFOR_BUILD_QUAD_TRUE}" && test -z "${LIBGFOR_BUILD_QUAD_FALSE}"
as_fn_error "conditional \"LIBGFOR_BUILD_QUAD\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5
fi
if test -z "${IEEE_SUPPORT_TRUE}" && test -z "${IEEE_SUPPORT_FALSE}"; then
as_fn_error "conditional \"IEEE_SUPPORT\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5
fi
: ${CONFIG_STATUS=./config.status}
ac_write_fail=0

9
libgfortran/configure.ac
View file

@ -530,6 +530,10 @@ AC_CHECK_TYPES([fp_rnd,fp_rnd_t], [], [], [[
#include <math.h>
]])
# Check whether we have fpsetsticky or fpresetsticky
AC_CHECK_FUNC([fpsetsticky],[have_fpsetsticky=yes AC_DEFINE([HAVE_FPSETSTICKY],[1],[fpsetsticky is present])])
AC_CHECK_FUNC([fpresetsticky],[have_fpresetsticky=yes AC_DEFINE([HAVE_FPRESETSTICKY],[1],[fpresetsticky is present])])
# Check for AIX fp_trap and fp_enable
AC_CHECK_FUNC([fp_trap],[have_fp_trap=yes AC_DEFINE([HAVE_FP_TRAP],[1],[fp_trap is present])])
AC_CHECK_FUNC([fp_enable],[have_fp_enable=yes AC_DEFINE([HAVE_FP_ENABLE],[1],[fp_enable is present])])
@ -539,9 +543,14 @@ AC_CHECK_FUNC([fp_enable],[have_fp_enable=yes AC_DEFINE([HAVE_FP_ENABLE],[1],[fp
# build chain.
. ${srcdir}/configure.host
AC_MSG_NOTICE([FPU dependent file will be ${fpu_host}.h])
AC_MSG_NOTICE([Support for IEEE modules: ${ieee_support}])
FPU_HOST_HEADER=config/${fpu_host}.h
AC_SUBST(FPU_HOST_HEADER)
# Whether we will build the IEEE modules
AM_CONDITIONAL(IEEE_SUPPORT,[test x${ieee_support} = xyes])
AC_SUBST(IEEE_SUPPORT)
# Some targets require additional compiler options for IEEE compatibility.
IEEE_FLAGS="${ieee_flags}"
AC_SUBST(IEEE_FLAGS)

24
libgfortran/configure.host
View file

@ -19,26 +19,32 @@
# DEFAULTS
fpu_host='fpu-generic'
ieee_support='no'
if test "x${have_fp_enable}" = "xyes" && test "x${have_fp_trap}" = "xyes"; then
fpu_host='fpu-aix'
ieee_support='yes'
fi
if test "x${have_fpsetmask}" = "xyes"; then
fpu_host='fpu-sysv'
ieee_support='yes'
fi
if test "x${have_feenableexcept}" = "xyes"; then
fpu_host='fpu-glibc'
ieee_support='yes'
fi
# x86 asm should be used instead of glibc, since glibc doesn't support
# the x86 denormal exception.
case "${host_cpu}" in
i?86 | x86_64)
fpu_host='fpu-387' ;;
fpu_host='fpu-387'
ieee_support='yes'
;;
esac
if test "x${have_fpsetmask}" = "xyes"; then
fpu_host='fpu-sysv'
fi
if test "x${have_fp_enable}" = "xyes" && test "x${have_fp_trap}" = "xyes"; then
fpu_host='fpu-aix'
fi
# Some targets require additional compiler options for NaN/Inf.
ieee_flags=
case "${host_cpu}" in

111
libgfortran/gfortran.map
View file

@ -1195,6 +1195,117 @@ GFORTRAN_1.5 {
_gfortran_backtrace;
} GFORTRAN_1.4;
GFORTRAN_1.6 {
global:
_gfortran_ieee_copy_sign_4_4_;
_gfortran_ieee_copy_sign_4_8_;
_gfortran_ieee_copy_sign_8_4_;
_gfortran_ieee_copy_sign_8_8_;
_gfortran_ieee_is_finite_4_;
_gfortran_ieee_is_finite_8_;
_gfortran_ieee_is_nan_4_;
_gfortran_ieee_is_nan_8_;
_gfortran_ieee_is_negative_4_;
_gfortran_ieee_is_negative_8_;
_gfortran_ieee_is_normal_4_;
_gfortran_ieee_is_normal_8_;
_gfortran_ieee_logb_4_;
_gfortran_ieee_logb_8_;
_gfortran_ieee_next_after_4_4_;
_gfortran_ieee_next_after_4_8_;
_gfortran_ieee_next_after_8_4_;
_gfortran_ieee_next_after_8_8_;
_gfortran_ieee_procedure_entry;
_gfortran_ieee_procedure_exit;
_gfortran_ieee_rem_4_4_;
_gfortran_ieee_rem_4_8_;
_gfortran_ieee_rem_8_4_;
_gfortran_ieee_rem_8_8_;
_gfortran_ieee_rint_4_;
_gfortran_ieee_rint_8_;
_gfortran_ieee_scalb_4_;
_gfortran_ieee_scalb_8_;
_gfortran_ieee_unordered_4_4_;
_gfortran_ieee_unordered_4_8_;
_gfortran_ieee_unordered_8_4_;
_gfortran_ieee_unordered_8_8_;
__ieee_arithmetic_MOD_ieee_class_4;
__ieee_arithmetic_MOD_ieee_class_8;
__ieee_arithmetic_MOD_ieee_class_type_eq;
__ieee_arithmetic_MOD_ieee_class_type_ne;
__ieee_arithmetic_MOD_ieee_get_rounding_mode;
__ieee_arithmetic_MOD_ieee_get_underflow_mode;
__ieee_arithmetic_MOD_ieee_round_type_eq;
__ieee_arithmetic_MOD_ieee_round_type_ne;
__ieee_arithmetic_MOD_ieee_selected_real_kind;
__ieee_arithmetic_MOD_ieee_set_rounding_mode;
__ieee_arithmetic_MOD_ieee_set_underflow_mode;
__ieee_arithmetic_MOD_ieee_support_datatype_4;
__ieee_arithmetic_MOD_ieee_support_datatype_8;
__ieee_arithmetic_MOD_ieee_support_datatype_10;
__ieee_arithmetic_MOD_ieee_support_datatype_16;
__ieee_arithmetic_MOD_ieee_support_datatype_noarg;
__ieee_arithmetic_MOD_ieee_support_denormal_4;
__ieee_arithmetic_MOD_ieee_support_denormal_8;
__ieee_arithmetic_MOD_ieee_support_denormal_10;
__ieee_arithmetic_MOD_ieee_support_denormal_16;
__ieee_arithmetic_MOD_ieee_support_denormal_noarg;
__ieee_arithmetic_MOD_ieee_support_divide_4;
__ieee_arithmetic_MOD_ieee_support_divide_8;
__ieee_arithmetic_MOD_ieee_support_divide_10;
__ieee_arithmetic_MOD_ieee_support_divide_16;
__ieee_arithmetic_MOD_ieee_support_divide_noarg;
__ieee_arithmetic_MOD_ieee_support_inf_4;
__ieee_arithmetic_MOD_ieee_support_inf_8;
__ieee_arithmetic_MOD_ieee_support_inf_10;
__ieee_arithmetic_MOD_ieee_support_inf_16;
__ieee_arithmetic_MOD_ieee_support_inf_noarg;
__ieee_arithmetic_MOD_ieee_support_io_4;
__ieee_arithmetic_MOD_ieee_support_io_8;
__ieee_arithmetic_MOD_ieee_support_io_10;
__ieee_arithmetic_MOD_ieee_support_io_16;
__ieee_arithmetic_MOD_ieee_support_io_noarg;
__ieee_arithmetic_MOD_ieee_support_nan_4;
__ieee_arithmetic_MOD_ieee_support_nan_8;
__ieee_arithmetic_MOD_ieee_support_nan_10;
__ieee_arithmetic_MOD_ieee_support_nan_16;
__ieee_arithmetic_MOD_ieee_support_nan_noarg;
__ieee_arithmetic_MOD_ieee_support_rounding_4;
__ieee_arithmetic_MOD_ieee_support_rounding_8;
__ieee_arithmetic_MOD_ieee_support_rounding_10;
__ieee_arithmetic_MOD_ieee_support_rounding_16;
__ieee_arithmetic_MOD_ieee_support_rounding_noarg;
__ieee_arithmetic_MOD_ieee_support_sqrt_4;
__ieee_arithmetic_MOD_ieee_support_sqrt_8;
__ieee_arithmetic_MOD_ieee_support_sqrt_10;
__ieee_arithmetic_MOD_ieee_support_sqrt_16;
__ieee_arithmetic_MOD_ieee_support_sqrt_noarg;
__ieee_arithmetic_MOD_ieee_support_standard_4;
__ieee_arithmetic_MOD_ieee_support_standard_8;
__ieee_arithmetic_MOD_ieee_support_standard_10;
__ieee_arithmetic_MOD_ieee_support_standard_16;
__ieee_arithmetic_MOD_ieee_support_standard_noarg;
__ieee_arithmetic_MOD_ieee_support_underflow_control_4;
__ieee_arithmetic_MOD_ieee_support_underflow_control_8;
__ieee_arithmetic_MOD_ieee_support_underflow_control_10;
__ieee_arithmetic_MOD_ieee_support_underflow_control_16;
__ieee_arithmetic_MOD_ieee_support_underflow_control_noarg;
__ieee_arithmetic_MOD_ieee_value_4;
__ieee_arithmetic_MOD_ieee_value_8;
__ieee_exceptions_MOD_ieee_all;
__ieee_exceptions_MOD_ieee_get_flag;
__ieee_exceptions_MOD_ieee_get_halting_mode;
__ieee_exceptions_MOD_ieee_get_status;
__ieee_exceptions_MOD_ieee_set_flag;
__ieee_exceptions_MOD_ieee_set_halting_mode;
__ieee_exceptions_MOD_ieee_set_status;
__ieee_exceptions_MOD_ieee_support_flag_4;
__ieee_exceptions_MOD_ieee_support_flag_8;
__ieee_exceptions_MOD_ieee_support_flag_noarg;
__ieee_exceptions_MOD_ieee_support_halting;
__ieee_exceptions_MOD_ieee_usual;
} GFORTRAN_1.5;
F2C_1.0 {
global:
_gfortran_f2c_specific__abs_c4;

817
libgfortran/ieee/ieee_arithmetic.F90 Normal file
View file

@ -0,0 +1,817 @@
! Implementation of the IEEE_ARITHMETIC standard intrinsic module
! Copyright (C) 2013 Free Software Foundation, Inc.
! Contributed by Francois-Xavier Coudert <fxcoudert@gcc.gnu.org>
!
! This file is part of the GNU Fortran runtime library (libgfortran).
!
! Libgfortran is free software; you can redistribute it and/or
! modify it under the terms of the GNU General Public
! License as published by the Free Software Foundation; either
! version 3 of the License, or (at your option) any later version.
!
! Libgfortran is distributed in the hope that it will be useful,
! but WITHOUT ANY WARRANTY; without even the implied warranty of
! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! GNU General Public License for more details.
!
! Under Section 7 of GPL version 3, you are granted additional
! permissions described in the GCC Runtime Library Exception, version
! 3.1, as published by the Free Software Foundation.
!
! You should have received a copy of the GNU General Public License and
! a copy of the GCC Runtime Library Exception along with this program;
! see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
! <http://www.gnu.org/licenses/>. */
#include "config.h"
#include "kinds.inc"
#include "c99_protos.inc"
#include "fpu-target.inc"
module IEEE_ARITHMETIC
use IEEE_EXCEPTIONS
implicit none
private
! Every public symbol from IEEE_EXCEPTIONS must be made public here
public :: IEEE_FLAG_TYPE, IEEE_INVALID, IEEE_OVERFLOW, &
IEEE_DIVIDE_BY_ZERO, IEEE_UNDERFLOW, IEEE_INEXACT, IEEE_USUAL, &
IEEE_ALL, IEEE_STATUS_TYPE, IEEE_GET_FLAG, IEEE_GET_HALTING_MODE, &
IEEE_GET_STATUS, IEEE_SET_FLAG, IEEE_SET_HALTING_MODE, &
IEEE_SET_STATUS, IEEE_SUPPORT_FLAG, IEEE_SUPPORT_HALTING
! Derived types and named constants
type, public :: IEEE_CLASS_TYPE
private
integer :: hidden
end type
type(IEEE_CLASS_TYPE), parameter, public :: &
IEEE_OTHER_VALUE = IEEE_CLASS_TYPE(0), &
IEEE_SIGNALING_NAN = IEEE_CLASS_TYPE(1), &
IEEE_QUIET_NAN = IEEE_CLASS_TYPE(2), &
IEEE_NEGATIVE_INF = IEEE_CLASS_TYPE(3), &
IEEE_NEGATIVE_NORMAL = IEEE_CLASS_TYPE(4), &
IEEE_NEGATIVE_DENORMAL = IEEE_CLASS_TYPE(5), &
IEEE_NEGATIVE_ZERO = IEEE_CLASS_TYPE(6), &
IEEE_POSITIVE_ZERO = IEEE_CLASS_TYPE(7), &
IEEE_POSITIVE_DENORMAL = IEEE_CLASS_TYPE(8), &
IEEE_POSITIVE_NORMAL = IEEE_CLASS_TYPE(9), &
IEEE_POSITIVE_INF = IEEE_CLASS_TYPE(10)
type, public :: IEEE_ROUND_TYPE
private
integer :: hidden
end type
type(IEEE_ROUND_TYPE), parameter, public :: &
IEEE_NEAREST = IEEE_ROUND_TYPE(GFC_FPE_TONEAREST), &
IEEE_TO_ZERO = IEEE_ROUND_TYPE(GFC_FPE_TOWARDZERO), &
IEEE_UP = IEEE_ROUND_TYPE(GFC_FPE_UPWARD), &
IEEE_DOWN = IEEE_ROUND_TYPE(GFC_FPE_DOWNWARD), &
IEEE_OTHER = IEEE_ROUND_TYPE(0)
! Equality operators on the derived types
interface operator (==)
module procedure IEEE_CLASS_TYPE_EQ, IEEE_ROUND_TYPE_EQ
end interface
public :: operator(==)
interface operator (/=)
module procedure IEEE_CLASS_TYPE_NE, IEEE_ROUND_TYPE_NE
end interface
public :: operator (/=)
! IEEE_IS_FINITE
interface
elemental logical function _gfortran_ieee_is_finite_4(X)
real(kind=4), intent(in) :: X
end function
elemental logical function _gfortran_ieee_is_finite_8(X)
real(kind=8), intent(in) :: X
end function
end interface
interface IEEE_IS_FINITE
procedure _gfortran_ieee_is_finite_4, _gfortran_ieee_is_finite_8
end interface
public :: IEEE_IS_FINITE
! IEEE_IS_NAN
interface
elemental logical function _gfortran_ieee_is_nan_4(X)
real(kind=4), intent(in) :: X
end function
elemental logical function _gfortran_ieee_is_nan_8(X)
real(kind=8), intent(in) :: X
end function
end interface
interface IEEE_IS_NAN
procedure _gfortran_ieee_is_nan_4, _gfortran_ieee_is_nan_8
end interface
public :: IEEE_IS_NAN
! IEEE_IS_NEGATIVE
interface
elemental logical function _gfortran_ieee_is_negative_4(X)
real(kind=4), intent(in) :: X
end function
elemental logical function _gfortran_ieee_is_negative_8(X)
real(kind=8), intent(in) :: X
end function
end interface
interface IEEE_IS_NEGATIVE
procedure _gfortran_ieee_is_negative_4, _gfortran_ieee_is_negative_8
end interface
public :: IEEE_IS_NEGATIVE
! IEEE_IS_NORMAL
interface
elemental logical function _gfortran_ieee_is_normal_4(X)
real(kind=4), intent(in) :: X
end function
elemental logical function _gfortran_ieee_is_normal_8(X)
real(kind=8), intent(in) :: X
end function
end interface
interface IEEE_IS_NORMAL
procedure _gfortran_ieee_is_normal_4, _gfortran_ieee_is_normal_8
end interface
public :: IEEE_IS_NORMAL
! IEEE_COPY_SIGN
interface
elemental real(kind=4) function _gfortran_ieee_copy_sign_4_4 (X,Y)
real(kind=4), intent(in) :: X
real(kind=4), intent(in) :: Y
end function
elemental real(kind=4) function _gfortran_ieee_copy_sign_4_8 (X,Y)
real(kind=4), intent(in) :: X
real(kind=8), intent(in) :: Y
end function
elemental real(kind=8) function _gfortran_ieee_copy_sign_8_4 (X,Y)
real(kind=8), intent(in) :: X
real(kind=4), intent(in) :: Y
end function
elemental real(kind=8) function _gfortran_ieee_copy_sign_8_8 (X,Y)
real(kind=8), intent(in) :: X
real(kind=8), intent(in) :: Y
end function
end interface
interface IEEE_COPY_SIGN
procedure _gfortran_ieee_copy_sign_4_4, _gfortran_ieee_copy_sign_4_8, &
_gfortran_ieee_copy_sign_8_4, _gfortran_ieee_copy_sign_8_8
end interface
public :: IEEE_COPY_SIGN
! IEEE_UNORDERED
interface
elemental logical function _gfortran_ieee_unordered_4_4 (X,Y)
real(kind=4), intent(in) :: X
real(kind=4), intent(in) :: Y
end function
elemental logical function _gfortran_ieee_unordered_4_8 (X,Y)
real(kind=4), intent(in) :: X
real(kind=8), intent(in) :: Y
end function
elemental logical function _gfortran_ieee_unordered_8_4 (X,Y)
real(kind=8), intent(in) :: X
real(kind=4), intent(in) :: Y
end function
elemental logical function _gfortran_ieee_unordered_8_8 (X,Y)
real(kind=8), intent(in) :: X
real(kind=8), intent(in) :: Y
end function
end interface
interface IEEE_UNORDERED
procedure _gfortran_ieee_unordered_4_4, _gfortran_ieee_unordered_4_8, &
_gfortran_ieee_unordered_8_4, _gfortran_ieee_unordered_8_8
end interface
public :: IEEE_UNORDERED
! IEEE_LOGB
interface
elemental real(kind=4) function _gfortran_ieee_logb_4 (X)
real(kind=4), intent(in) :: X
end function
elemental real(kind=8) function _gfortran_ieee_logb_8 (X)
real(kind=8), intent(in) :: X
end function
end interface
interface IEEE_LOGB
procedure _gfortran_ieee_logb_4, _gfortran_ieee_logb_8
end interface
public :: IEEE_LOGB
! IEEE_NEXT_AFTER
interface
elemental real(kind=4) function _gfortran_ieee_next_after_4_4 (X, Y)
real(kind=4), intent(in) :: X
real(kind=4), intent(in) :: Y
end function
elemental real(kind=4) function _gfortran_ieee_next_after_4_8 (X, Y)
real(kind=4), intent(in) :: X
real(kind=8), intent(in) :: Y
end function
elemental real(kind=8) function _gfortran_ieee_next_after_8_4 (X, Y)
real(kind=8), intent(in) :: X
real(kind=4), intent(in) :: Y
end function
elemental real(kind=8) function _gfortran_ieee_next_after_8_8 (X, Y)
real(kind=8), intent(in) :: X
real(kind=8), intent(in) :: Y
end function
end interface
interface IEEE_NEXT_AFTER
procedure _gfortran_ieee_next_after_4_4, _gfortran_ieee_next_after_4_8, &
_gfortran_ieee_next_after_8_4, _gfortran_ieee_next_after_8_8
end interface
public :: IEEE_NEXT_AFTER
! IEEE_REM
interface
elemental real(kind=4) function _gfortran_ieee_rem_4_4 (X, Y)
real(kind=4), intent(in) :: X
real(kind=4), intent(in) :: Y
end function
elemental real(kind=8) function _gfortran_ieee_rem_4_8 (X, Y)
real(kind=4), intent(in) :: X
real(kind=8), intent(in) :: Y
end function
elemental real(kind=8) function _gfortran_ieee_rem_8_4 (X, Y)
real(kind=8), intent(in) :: X
real(kind=4), intent(in) :: Y
end function
elemental real(kind=8) function _gfortran_ieee_rem_8_8 (X, Y)
real(kind=8), intent(in) :: X
real(kind=8), intent(in) :: Y
end function
end interface
interface IEEE_REM
procedure _gfortran_ieee_rem_4_4, _gfortran_ieee_rem_4_8, &
_gfortran_ieee_rem_8_4, _gfortran_ieee_rem_8_8
end interface
public :: IEEE_REM
! IEEE_RINT
interface
elemental real(kind=4) function _gfortran_ieee_rint_4 (X)
real(kind=4), intent(in) :: X
end function
elemental real(kind=8) function _gfortran_ieee_rint_8 (X)
real(kind=8), intent(in) :: X
end function
end interface
interface IEEE_RINT
procedure _gfortran_ieee_rint_4, _gfortran_ieee_rint_8
end interface
public :: IEEE_RINT
! IEEE_SCALB
interface
elemental real(kind=4) function _gfortran_ieee_scalb_4 (X, I)
real(kind=4), intent(in) :: X
integer, intent(in) :: I
end function
elemental real(kind=8) function _gfortran_ieee_scalb_8 (X, I)
real(kind=8), intent(in) :: X
integer, intent(in) :: I
end function
end interface
interface IEEE_SCALB
procedure _gfortran_ieee_scalb_4, _gfortran_ieee_scalb_8
end interface
public :: IEEE_SCALB
! IEEE_VALUE
interface IEEE_VALUE
module procedure IEEE_VALUE_4, IEEE_VALUE_8
end interface
public :: IEEE_VALUE
! IEEE_CLASS
interface IEEE_CLASS
module procedure IEEE_CLASS_4, IEEE_CLASS_8
end interface
public :: IEEE_CLASS
! Public declarations for contained procedures
public :: IEEE_GET_ROUNDING_MODE, IEEE_SET_ROUNDING_MODE
public :: IEEE_GET_UNDERFLOW_MODE, IEEE_SET_UNDERFLOW_MODE
public :: IEEE_SELECTED_REAL_KIND
! IEEE_SUPPORT_ROUNDING
interface IEEE_SUPPORT_ROUNDING
module procedure IEEE_SUPPORT_ROUNDING_4, IEEE_SUPPORT_ROUNDING_8, &
#ifdef HAVE_GFC_REAL_10
IEEE_SUPPORT_ROUNDING_10, &
#endif
#ifdef HAVE_GFC_REAL_16
IEEE_SUPPORT_ROUNDING_16, &
#endif
IEEE_SUPPORT_ROUNDING_NOARG
end interface
public :: IEEE_SUPPORT_ROUNDING
! Interface to the FPU-specific function
interface
pure integer function support_rounding_helper(flag) &
bind(c, name="_gfortrani_support_fpu_rounding_mode")
integer, intent(in), value :: flag
end function
end interface
! IEEE_SUPPORT_* generic functions
#if defined(HAVE_GFC_REAL_10) && defined(HAVE_GFC_REAL_16)
# define MACRO1(NAME) NAME/**/_4, NAME/**/_8, NAME/**/_10, NAME/**/_16, NAME/**/_NOARG
#elif defined(HAVE_GFC_REAL_10)
# define MACRO1(NAME) NAME/**/_4, NAME/**/_8, NAME/**/_10, NAME/**/_NOARG
#elif defined(HAVE_GFC_REAL_16)
# define MACRO1(NAME) NAME/**/_4, NAME/**/_8, NAME/**/_16, NAME/**/_NOARG
#else
# define MACRO1(NAME) NAME/**/_4, NAME/**/_8, NAME/**/_NOARG
#endif
#define SUPPORTGENERIC(NAME) \
interface NAME ; module procedure MACRO1(NAME) ; end interface ; \
public :: NAME
SUPPORTGENERIC(IEEE_SUPPORT_DATATYPE)
SUPPORTGENERIC(IEEE_SUPPORT_DENORMAL)
SUPPORTGENERIC(IEEE_SUPPORT_DIVIDE)
SUPPORTGENERIC(IEEE_SUPPORT_INF)
SUPPORTGENERIC(IEEE_SUPPORT_IO)
SUPPORTGENERIC(IEEE_SUPPORT_NAN)
SUPPORTGENERIC(IEEE_SUPPORT_SQRT)
SUPPORTGENERIC(IEEE_SUPPORT_STANDARD)
SUPPORTGENERIC(IEEE_SUPPORT_UNDERFLOW_CONTROL)
contains
! Equality operators for IEEE_CLASS_TYPE and IEEE_ROUNDING_MODE
elemental logical function IEEE_CLASS_TYPE_EQ (X, Y) result(res)
implicit none
type(IEEE_CLASS_TYPE), intent(in) :: X, Y
res = (X%hidden == Y%hidden)
end function
elemental logical function IEEE_CLASS_TYPE_NE (X, Y) result(res)
implicit none
type(IEEE_CLASS_TYPE), intent(in) :: X, Y
res = (X%hidden /= Y%hidden)
end function
elemental logical function IEEE_ROUND_TYPE_EQ (X, Y) result(res)
implicit none
type(IEEE_ROUND_TYPE), intent(in) :: X, Y
res = (X%hidden == Y%hidden)
end function
elemental logical function IEEE_ROUND_TYPE_NE (X, Y) result(res)
implicit none
type(IEEE_ROUND_TYPE), intent(in) :: X, Y
res = (X%hidden /= Y%hidden)
end function
! IEEE_SELECTED_REAL_KIND
integer function IEEE_SELECTED_REAL_KIND (P, R, RADIX) result(res)
implicit none
integer, intent(in), optional :: P, R, RADIX
integer :: p2, r2
p2 = 0 ; r2 = 0
if (present(p)) p2 = p
if (present(r)) r2 = r
! The only IEEE types we support right now are binary
if (present(radix)) then
if (radix /= 2) then
res = -5
return
endif
endif
! Does IEEE float fit?
if (precision(0.) >= p2 .and. range(0.) >= r2) then
res = kind(0.)
return
endif
! Does IEEE double fit?
if (precision(0.d0) >= p2 .and. range(0.d0) >= r2) then
res = kind(0.d0)
return
endif
if (precision(0.d0) < p2 .and. range(0.d0) < r2) then
res = -3
return
endif
if (precision(0.d0) < p2) then
res = -1
return
endif
res = -2
end function
! IEEE_CLASS
elemental function IEEE_CLASS_4 (X) result(res)
implicit none
real(kind=4), intent(in) :: X
type(IEEE_CLASS_TYPE) :: res
interface
pure integer function _gfortrani_ieee_class_helper_4(val)
real(kind=4), intent(in) :: val
end function
end interface
res = IEEE_CLASS_TYPE(_gfortrani_ieee_class_helper_4(X))
end function
elemental function IEEE_CLASS_8 (X) result(res)
implicit none
real(kind=8), intent(in) :: X
type(IEEE_CLASS_TYPE) :: res
interface
pure integer function _gfortrani_ieee_class_helper_8(val)
real(kind=8), intent(in) :: val
end function
end interface
res = IEEE_CLASS_TYPE(_gfortrani_ieee_class_helper_8(X))
end function
! IEEE_VALUE
elemental real(kind=4) function IEEE_VALUE_4(X, C) result(res)
implicit none
real(kind=4), intent(in) :: X
type(IEEE_CLASS_TYPE), intent(in) :: C
select case (C%hidden)
case (1) ! IEEE_SIGNALING_NAN
res = -1
res = sqrt(res)
case (2) ! IEEE_QUIET_NAN
res = -1
res = sqrt(res)
case (3) ! IEEE_NEGATIVE_INF
res = huge(res)
res = (-res) * res
case (4) ! IEEE_NEGATIVE_NORMAL
res = -42
case (5) ! IEEE_NEGATIVE_DENORMAL
res = -tiny(res)
res = res / 2
case (6) ! IEEE_NEGATIVE_ZERO
res = 0
res = -res
case (7) ! IEEE_POSITIVE_ZERO
res = 0
case (8) ! IEEE_POSITIVE_DENORMAL
res = tiny(res)
res = res / 2
case (9) ! IEEE_POSITIVE_NORMAL
res = 42
case (10) ! IEEE_POSITIVE_INF
res = huge(res)
res = res * res
case default ! IEEE_OTHER_VALUE, should not happen
res = 0
end select
end function
elemental real(kind=8) function IEEE_VALUE_8(X, C) result(res)
implicit none
real(kind=8), intent(in) :: X
type(IEEE_CLASS_TYPE), intent(in) :: C
select case (C%hidden)
case (1) ! IEEE_SIGNALING_NAN
res = -1
res = sqrt(res)
case (2) ! IEEE_QUIET_NAN
res = -1
res = sqrt(res)
case (3) ! IEEE_NEGATIVE_INF
res = huge(res)
res = (-res) * res
case (4) ! IEEE_NEGATIVE_NORMAL
res = -42
case (5) ! IEEE_NEGATIVE_DENORMAL
res = -tiny(res)
res = res / 2
case (6) ! IEEE_NEGATIVE_ZERO
res = 0
res = -res
case (7) ! IEEE_POSITIVE_ZERO
res = 0
case (8) ! IEEE_POSITIVE_DENORMAL
res = tiny(res)
res = res / 2
case (9) ! IEEE_POSITIVE_NORMAL
res = 42
case (10) ! IEEE_POSITIVE_INF
res = huge(res)
res = res * res
case default ! IEEE_OTHER_VALUE, should not happen
res = 0
end select
end function
! IEEE_GET_ROUNDING_MODE
subroutine IEEE_GET_ROUNDING_MODE (ROUND_VALUE)
implicit none
type(IEEE_ROUND_TYPE), intent(out) :: ROUND_VALUE
integer :: i
interface
integer function helper() &
bind(c, name="_gfortrani_get_fpu_rounding_mode")
end function
end interface
! FIXME: Use intermediate variable i to avoid triggering PR59023
i = helper()
ROUND_VALUE = IEEE_ROUND_TYPE(i)
end subroutine
! IEEE_SET_ROUNDING_MODE
subroutine IEEE_SET_ROUNDING_MODE (ROUND_VALUE)
implicit none
type(IEEE_ROUND_TYPE), intent(in) :: ROUND_VALUE
interface
subroutine helper(val) &
bind(c, name="_gfortrani_set_fpu_rounding_mode")
integer, value :: val
end subroutine
end interface
call helper(ROUND_VALUE%hidden)
end subroutine
! IEEE_GET_UNDERFLOW_MODE
subroutine IEEE_GET_UNDERFLOW_MODE (GRADUAL)
implicit none
logical, intent(out) :: GRADUAL
! We do not support getting/setting underflow mode yet. We still
! provide the procedures to avoid link-time error if a user program
! uses it protected by a call to IEEE_SUPPORT_UNDERFLOW_CONTROL
call abort
end subroutine
! IEEE_SET_UNDERFLOW_MODE
subroutine IEEE_SET_UNDERFLOW_MODE (GRADUAL)
implicit none
logical, intent(in) :: GRADUAL
! We do not support getting/setting underflow mode yet. We still
! provide the procedures to avoid link-time error if a user program
! uses it protected by a call to IEEE_SUPPORT_UNDERFLOW_CONTROL
call abort
end subroutine
! IEEE_SUPPORT_ROUNDING
pure logical function IEEE_SUPPORT_ROUNDING_4 (ROUND_VALUE, X) result(res)
implicit none
real(kind=4), intent(in) :: X
type(IEEE_ROUND_TYPE), intent(in) :: ROUND_VALUE
res = (support_rounding_helper(ROUND_VALUE%hidden) /= 0)
end function
pure logical function IEEE_SUPPORT_ROUNDING_8 (ROUND_VALUE, X) result(res)
implicit none
real(kind=8), intent(in) :: X
type(IEEE_ROUND_TYPE), intent(in) :: ROUND_VALUE
res = (support_rounding_helper(ROUND_VALUE%hidden) /= 0)
end function
#ifdef HAVE_GFC_REAL_10
pure logical function IEEE_SUPPORT_ROUNDING_10 (ROUND_VALUE, X) result(res)
implicit none
real(kind=10), intent(in) :: X
type(IEEE_ROUND_TYPE), intent(in) :: ROUND_VALUE
res = .false.
end function
#endif
#ifdef HAVE_GFC_REAL_16
pure logical function IEEE_SUPPORT_ROUNDING_16 (ROUND_VALUE, X) result(res)
implicit none
real(kind=16), intent(in) :: X
type(IEEE_ROUND_TYPE), intent(in) :: ROUND_VALUE
res = .false.
end function
#endif
pure logical function IEEE_SUPPORT_ROUNDING_NOARG (ROUND_VALUE) result(res)
implicit none
type(IEEE_ROUND_TYPE), intent(in) :: ROUND_VALUE
#if defined(HAVE_GFC_REAL_10) || defined(HAVE_GFC_REAL_16)
res = .false.
#else
res = (support_rounding_helper(ROUND_VALUE%hidden) /= 0)
#endif
end function
! IEEE_SUPPORT_* functions
#define SUPPORTMACRO(NAME, INTKIND, VALUE) \
pure logical function NAME/**/_/**/INTKIND (X) result(res) ; \
implicit none ; \
real(INTKIND), intent(in) :: X(..) ; \
res = VALUE ; \
end function
#define SUPPORTMACRO_NOARG(NAME, VALUE) \
pure logical function NAME/**/_NOARG () result(res) ; \
implicit none ; \
res = VALUE ; \
end function
! IEEE_SUPPORT_DATATYPE
SUPPORTMACRO(IEEE_SUPPORT_DATATYPE,4,.true.)
SUPPORTMACRO(IEEE_SUPPORT_DATATYPE,8,.true.)
#ifdef HAVE_GFC_REAL_10
SUPPORTMACRO(IEEE_SUPPORT_DATATYPE,10,.false.)
#endif
#ifdef HAVE_GFC_REAL_16
SUPPORTMACRO(IEEE_SUPPORT_DATATYPE,16,.false.)
#endif
#if defined(HAVE_GFC_REAL_10) || defined(HAVE_GFC_REAL_16)
SUPPORTMACRO_NOARG(IEEE_SUPPORT_DATATYPE,.false.)
#else
SUPPORTMACRO_NOARG(IEEE_SUPPORT_DATATYPE,.true.)
#endif
! IEEE_SUPPORT_DENORMAL
SUPPORTMACRO(IEEE_SUPPORT_DENORMAL,4,.true.)
SUPPORTMACRO(IEEE_SUPPORT_DENORMAL,8,.true.)
#ifdef HAVE_GFC_REAL_10
SUPPORTMACRO(IEEE_SUPPORT_DENORMAL,10,.false.)
#endif
#ifdef HAVE_GFC_REAL_16
SUPPORTMACRO(IEEE_SUPPORT_DENORMAL,16,.false.)
#endif
#if defined(HAVE_GFC_REAL_10) || defined(HAVE_GFC_REAL_16)
SUPPORTMACRO_NOARG(IEEE_SUPPORT_DENORMAL,.false.)
#else
SUPPORTMACRO_NOARG(IEEE_SUPPORT_DENORMAL,.true.)
#endif
! IEEE_SUPPORT_DIVIDE
SUPPORTMACRO(IEEE_SUPPORT_DIVIDE,4,.true.)
SUPPORTMACRO(IEEE_SUPPORT_DIVIDE,8,.true.)
#ifdef HAVE_GFC_REAL_10
SUPPORTMACRO(IEEE_SUPPORT_DIVIDE,10,.false.)
#endif
#ifdef HAVE_GFC_REAL_16
SUPPORTMACRO(IEEE_SUPPORT_DIVIDE,16,.false.)
#endif
#if defined(HAVE_GFC_REAL_10) || defined(HAVE_GFC_REAL_16)
SUPPORTMACRO_NOARG(IEEE_SUPPORT_DIVIDE,.false.)
#else
SUPPORTMACRO_NOARG(IEEE_SUPPORT_DIVIDE,.true.)
#endif
! IEEE_SUPPORT_INF
SUPPORTMACRO(IEEE_SUPPORT_INF,4,.true.)
SUPPORTMACRO(IEEE_SUPPORT_INF,8,.true.)
#ifdef HAVE_GFC_REAL_10
SUPPORTMACRO(IEEE_SUPPORT_INF,10,.false.)
#endif
#ifdef HAVE_GFC_REAL_16
SUPPORTMACRO(IEEE_SUPPORT_INF,16,.false.)
#endif
#if defined(HAVE_GFC_REAL_10) || defined(HAVE_GFC_REAL_16)
SUPPORTMACRO_NOARG(IEEE_SUPPORT_INF,.false.)
#else
SUPPORTMACRO_NOARG(IEEE_SUPPORT_INF,.true.)
#endif
! IEEE_SUPPORT_IO
SUPPORTMACRO(IEEE_SUPPORT_IO,4,.true.)
SUPPORTMACRO(IEEE_SUPPORT_IO,8,.true.)
#ifdef HAVE_GFC_REAL_10
SUPPORTMACRO(IEEE_SUPPORT_IO,10,.false.)
#endif
#ifdef HAVE_GFC_REAL_16
SUPPORTMACRO(IEEE_SUPPORT_IO,16,.false.)
#endif
#if defined(HAVE_GFC_REAL_10) || defined(HAVE_GFC_REAL_16)
SUPPORTMACRO_NOARG(IEEE_SUPPORT_IO,.false.)
#else
SUPPORTMACRO_NOARG(IEEE_SUPPORT_IO,.true.)
#endif
! IEEE_SUPPORT_NAN
SUPPORTMACRO(IEEE_SUPPORT_NAN,4,.true.)
SUPPORTMACRO(IEEE_SUPPORT_NAN,8,.true.)
#ifdef HAVE_GFC_REAL_10
SUPPORTMACRO(IEEE_SUPPORT_NAN,10,.false.)
#endif
#ifdef HAVE_GFC_REAL_16
SUPPORTMACRO(IEEE_SUPPORT_NAN,16,.false.)
#endif
#if defined(HAVE_GFC_REAL_10) || defined(HAVE_GFC_REAL_16)
SUPPORTMACRO_NOARG(IEEE_SUPPORT_NAN,.false.)
#else
SUPPORTMACRO_NOARG(IEEE_SUPPORT_NAN,.true.)
#endif
! IEEE_SUPPORT_SQRT
SUPPORTMACRO(IEEE_SUPPORT_SQRT,4,.true.)
SUPPORTMACRO(IEEE_SUPPORT_SQRT,8,.true.)
#ifdef HAVE_GFC_REAL_10
SUPPORTMACRO(IEEE_SUPPORT_SQRT,10,.false.)
#endif
#ifdef HAVE_GFC_REAL_16
SUPPORTMACRO(IEEE_SUPPORT_SQRT,16,.false.)
#endif
#if defined(HAVE_GFC_REAL_10) || defined(HAVE_GFC_REAL_16)
SUPPORTMACRO_NOARG(IEEE_SUPPORT_SQRT,.false.)
#else
SUPPORTMACRO_NOARG(IEEE_SUPPORT_SQRT,.true.)
#endif
! IEEE_SUPPORT_STANDARD
SUPPORTMACRO(IEEE_SUPPORT_STANDARD,4,.true.)
SUPPORTMACRO(IEEE_SUPPORT_STANDARD,8,.true.)
#ifdef HAVE_GFC_REAL_10
SUPPORTMACRO(IEEE_SUPPORT_STANDARD,10,.false.)
#endif
#ifdef HAVE_GFC_REAL_16
SUPPORTMACRO(IEEE_SUPPORT_STANDARD,16,.false.)
#endif
#if defined(HAVE_GFC_REAL_10) || defined(HAVE_GFC_REAL_16)
SUPPORTMACRO_NOARG(IEEE_SUPPORT_STANDARD,.false.)
#else
SUPPORTMACRO_NOARG(IEEE_SUPPORT_STANDARD,.true.)
#endif
! IEEE_SUPPORT_UNDERFLOW_CONTROL
SUPPORTMACRO(IEEE_SUPPORT_UNDERFLOW_CONTROL,4,.false.)
SUPPORTMACRO(IEEE_SUPPORT_UNDERFLOW_CONTROL,8,.false.)
#ifdef HAVE_GFC_REAL_10
SUPPORTMACRO(IEEE_SUPPORT_UNDERFLOW_CONTROL,10,.false.)
#endif
#ifdef HAVE_GFC_REAL_16
SUPPORTMACRO(IEEE_SUPPORT_UNDERFLOW_CONTROL,16,.false.)
#endif
SUPPORTMACRO_NOARG(IEEE_SUPPORT_UNDERFLOW_CONTROL,.false.)
end module IEEE_ARITHMETIC

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! Implementation of the IEEE_EXCEPTIONS standard intrinsic module
! Copyright (C) 2013 Free Software Foundation, Inc.
! Contributed by Francois-Xavier Coudert <fxcoudert@gcc.gnu.org>
!
! This file is part of the GNU Fortran runtime library (libgfortran).
!
! Libgfortran is free software; you can redistribute it and/or
! modify it under the terms of the GNU General Public
! License as published by the Free Software Foundation; either
! version 3 of the License, or (at your option) any later version.
!
! Libgfortran is distributed in the hope that it will be useful,
! but WITHOUT ANY WARRANTY; without even the implied warranty of
! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! GNU General Public License for more details.
!
! Under Section 7 of GPL version 3, you are granted additional
! permissions described in the GCC Runtime Library Exception, version
! 3.1, as published by the Free Software Foundation.
!
! You should have received a copy of the GNU General Public License and
! a copy of the GCC Runtime Library Exception along with this program;
! see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
! <http://www.gnu.org/licenses/>. */
#include "config.h"
#include "kinds.inc"
#include "c99_protos.inc"
#include "fpu-target.inc"
module IEEE_EXCEPTIONS
implicit none
private
! Derived types and named constants
type, public :: IEEE_FLAG_TYPE
private
integer :: hidden
end type
type(IEEE_FLAG_TYPE), parameter, public :: &
IEEE_INVALID = IEEE_FLAG_TYPE(GFC_FPE_INVALID), &
IEEE_OVERFLOW = IEEE_FLAG_TYPE(GFC_FPE_OVERFLOW), &
IEEE_DIVIDE_BY_ZERO = IEEE_FLAG_TYPE(GFC_FPE_ZERO), &
IEEE_UNDERFLOW = IEEE_FLAG_TYPE(GFC_FPE_UNDERFLOW), &
IEEE_INEXACT = IEEE_FLAG_TYPE(GFC_FPE_INEXACT)
type(IEEE_FLAG_TYPE), parameter, public :: &
IEEE_USUAL(3) = [ IEEE_OVERFLOW, IEEE_DIVIDE_BY_ZERO, IEEE_INVALID ], &
IEEE_ALL(5) = [ IEEE_USUAL, IEEE_UNDERFLOW, IEEE_INEXACT ]
type, public :: IEEE_STATUS_TYPE
private
character(len=GFC_FPE_STATE_BUFFER_SIZE) :: hidden
end type
interface IEEE_SUPPORT_FLAG
module procedure IEEE_SUPPORT_FLAG_NOARG, &
IEEE_SUPPORT_FLAG_4, &
IEEE_SUPPORT_FLAG_8
end interface IEEE_SUPPORT_FLAG
public :: IEEE_SUPPORT_FLAG, IEEE_SUPPORT_HALTING
public :: IEEE_SET_HALTING_MODE, IEEE_GET_HALTING_MODE
public :: IEEE_SET_FLAG, IEEE_GET_FLAG
public :: IEEE_SET_STATUS, IEEE_GET_STATUS
contains
! Saving and restoring floating-point status
subroutine IEEE_GET_STATUS (STATUS_VALUE)
implicit none
type(IEEE_STATUS_TYPE), intent(out) :: STATUS_VALUE
interface
subroutine helper(ptr) &
bind(c, name="_gfortrani_get_fpu_state")
use, intrinsic :: iso_c_binding, only : c_char
character(kind=c_char) :: ptr(*)
end subroutine
end interface
call helper(STATUS_VALUE%hidden)
end subroutine
subroutine IEEE_SET_STATUS (STATUS_VALUE)
implicit none
type(IEEE_STATUS_TYPE), intent(in) :: STATUS_VALUE
interface
subroutine helper(ptr) &
bind(c, name="_gfortrani_set_fpu_state")
use, intrinsic :: iso_c_binding, only : c_char
character(kind=c_char) :: ptr(*)
end subroutine
end interface
call helper(STATUS_VALUE%hidden)
end subroutine
! Getting and setting flags
elemental subroutine IEEE_GET_FLAG (FLAG, FLAG_VALUE)
implicit none
type(IEEE_FLAG_TYPE), intent(in) :: FLAG
logical, intent(out) :: FLAG_VALUE
interface
pure integer function helper() &
bind(c, name="_gfortrani_get_fpu_except_flags")
end function
end interface
FLAG_VALUE = (IAND(helper(), FLAG%hidden) /= 0)
end subroutine
elemental subroutine IEEE_SET_FLAG (FLAG, FLAG_VALUE)
implicit none
type(IEEE_FLAG_TYPE), intent(in) :: FLAG
logical, intent(in) :: FLAG_VALUE
interface
pure subroutine helper(set, clear) &
bind(c, name="_gfortrani_set_fpu_except_flags")
integer, intent(in), value :: set, clear
end subroutine
end interface
if (FLAG_VALUE) then
call helper(FLAG%hidden, 0)
else
call helper(0, FLAG%hidden)
end if
end subroutine
! Querying and changing the halting mode
elemental subroutine IEEE_GET_HALTING_MODE (FLAG, HALTING)
implicit none
type(IEEE_FLAG_TYPE), intent(in) :: FLAG
logical, intent(out) :: HALTING
interface
pure integer function helper() &
bind(c, name="_gfortrani_get_fpu_trap_exceptions")
end function
end interface
HALTING = (IAND(helper(), FLAG%hidden) /= 0)
end subroutine
elemental subroutine IEEE_SET_HALTING_MODE (FLAG, HALTING)
implicit none
type(IEEE_FLAG_TYPE), intent(in) :: FLAG
logical, intent(in) :: HALTING
interface
pure subroutine helper(trap, notrap) &
bind(c, name="_gfortrani_set_fpu_trap_exceptions")
integer, intent(in), value :: trap, notrap
end subroutine
end interface
if (HALTING) then
call helper(FLAG%hidden, 0)
else
call helper(0, FLAG%hidden)
end if
end subroutine
! Querying support
pure logical function IEEE_SUPPORT_HALTING (FLAG)
implicit none
type(IEEE_FLAG_TYPE), intent(in) :: FLAG
interface
pure integer function helper(flag) &
bind(c, name="_gfortrani_support_fpu_trap")
integer, intent(in), value :: flag
end function
end interface
IEEE_SUPPORT_HALTING = (helper(FLAG%hidden) /= 0)
end function
pure logical function IEEE_SUPPORT_FLAG_NOARG (FLAG)
implicit none
type(IEEE_FLAG_TYPE), intent(in) :: FLAG
interface
pure integer function helper(flag) &
bind(c, name="_gfortrani_support_fpu_flag")
integer, intent(in), value :: flag
end function
end interface
IEEE_SUPPORT_FLAG_NOARG = (helper(FLAG%hidden) /= 0)
end function
pure logical function IEEE_SUPPORT_FLAG_4 (FLAG, X) result(res)
implicit none
type(IEEE_FLAG_TYPE), intent(in) :: FLAG
real(kind=4), intent(in) :: X
res = IEEE_SUPPORT_FLAG_NOARG(FLAG)
end function
pure logical function IEEE_SUPPORT_FLAG_8 (FLAG, X) result(res)
implicit none
type(IEEE_FLAG_TYPE), intent(in) :: FLAG
real(kind=8), intent(in) :: X
res = IEEE_SUPPORT_FLAG_NOARG(FLAG)
end function
end module IEEE_EXCEPTIONS

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! Implementation of the IEEE_FEATURES standard intrinsic module
! Copyright (C) 2013 Free Software Foundation, Inc.
! Contributed by Francois-Xavier Coudert <fxcoudert@gcc.gnu.org>
!
! This file is part of the GNU Fortran runtime library (libgfortran).
!
! Libgfortran is free software; you can redistribute it and/or
! modify it under the terms of the GNU General Public
! License as published by the Free Software Foundation; either
! version 3 of the License, or (at your option) any later version.
!
! Libgfortran is distributed in the hope that it will be useful,
! but WITHOUT ANY WARRANTY; without even the implied warranty of
! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! GNU General Public License for more details.
!
! Under Section 7 of GPL version 3, you are granted additional
! permissions described in the GCC Runtime Library Exception, version
! 3.1, as published by the Free Software Foundation.
!
! You should have received a copy of the GNU General Public License and
! a copy of the GCC Runtime Library Exception along with this program;
! see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
! <http://www.gnu.org/licenses/>. */
module IEEE_FEATURES
implicit none
private
type, public :: IEEE_FEATURES_TYPE
private
integer :: hidden
end type
type(IEEE_FEATURES_TYPE), parameter, public :: &
IEEE_DATATYPE = IEEE_FEATURES_TYPE(0), &
IEEE_DENORMAL = IEEE_FEATURES_TYPE(1), &
IEEE_DIVIDE = IEEE_FEATURES_TYPE(2), &
IEEE_HALTING = IEEE_FEATURES_TYPE(3), &
IEEE_INEXACT_FLAG = IEEE_FEATURES_TYPE(4), &
IEEE_INF = IEEE_FEATURES_TYPE(5), &
IEEE_INVALID_FLAG = IEEE_FEATURES_TYPE(6), &
IEEE_NAN = IEEE_FEATURES_TYPE(7), &
IEEE_ROUNDING = IEEE_FEATURES_TYPE(8), &
IEEE_SQRT = IEEE_FEATURES_TYPE(9), &
IEEE_UNDERFLOW_FLAG = IEEE_FEATURES_TYPE(10)
end module IEEE_FEATURES

407
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/* Helper functions in C for IEEE modules
Copyright (C) 2013 Free Software Foundation, Inc.
Contributed by Francois-Xavier Coudert <fxcoudert@gcc.gnu.org>
This file is part of the GNU Fortran runtime library (libgfortran).
Libgfortran is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
Libgfortran is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#include "libgfortran.h"
/* Prototypes. */
extern int ieee_class_helper_4 (GFC_REAL_4 *);
internal_proto(ieee_class_helper_4);
extern int ieee_class_helper_8 (GFC_REAL_8 *);
internal_proto(ieee_class_helper_8);
extern int ieee_is_finite_4_ (GFC_REAL_4 *);
export_proto(ieee_is_finite_4_);
extern int ieee_is_finite_8_ (GFC_REAL_8 *);
export_proto(ieee_is_finite_8_);
extern int ieee_is_nan_4_ (GFC_REAL_4 *);
export_proto(ieee_is_nan_4_);
extern int ieee_is_nan_8_ (GFC_REAL_8 *);
export_proto(ieee_is_nan_8_);
extern int ieee_is_negative_4_ (GFC_REAL_4 *);
export_proto(ieee_is_negative_4_);
extern int ieee_is_negative_8_ (GFC_REAL_8 *);
export_proto(ieee_is_negative_8_);
extern int ieee_is_normal_4_ (GFC_REAL_4 *);
export_proto(ieee_is_normal_4_);
extern int ieee_is_normal_8_ (GFC_REAL_8 *);
export_proto(ieee_is_normal_8_);
/* Enumeration of the possible floating-point types. These values
correspond to the hidden arguments of the IEEE_CLASS_TYPE
derived-type of IEEE_ARITHMETIC. */
enum { IEEE_OTHER_VALUE = 0, IEEE_SIGNALING_NAN, IEEE_QUIET_NAN,
IEEE_NEGATIVE_INF, IEEE_NEGATIVE_NORMAL, IEEE_NEGATIVE_DENORMAL,
IEEE_NEGATIVE_ZERO, IEEE_POSITIVE_ZERO, IEEE_POSITIVE_DENORMAL,
IEEE_POSITIVE_NORMAL, IEEE_POSITIVE_INF };
#define CLASSMACRO(TYPE) \
int ieee_class_helper_ ## TYPE (GFC_REAL_ ## TYPE *value) \
{ \
int res = __builtin_fpclassify (IEEE_QUIET_NAN, IEEE_POSITIVE_INF, \
IEEE_POSITIVE_NORMAL, \
IEEE_POSITIVE_DENORMAL, \
IEEE_POSITIVE_ZERO, *value); \
\
if (__builtin_signbit (*value)) \
{ \
if (res == IEEE_POSITIVE_NORMAL) \
return IEEE_NEGATIVE_NORMAL; \
else if (res == IEEE_POSITIVE_DENORMAL) \
return IEEE_NEGATIVE_DENORMAL; \
else if (res == IEEE_POSITIVE_ZERO) \
return IEEE_NEGATIVE_ZERO; \
else if (res == IEEE_POSITIVE_INF) \
return IEEE_NEGATIVE_INF; \
} \
\
if (res == IEEE_QUIET_NAN) \
{ \
/* TODO: Handle signaling NaNs */ \
return res; \
} \
\
return res; \
}
CLASSMACRO(4)
CLASSMACRO(8)
/* Testing functions. */
int ieee_is_finite_4_ (GFC_REAL_4 *val)
{
return __builtin_isfinite(*val) ? 1 : 0;
}
int ieee_is_finite_8_ (GFC_REAL_8 *val)
{
return __builtin_isfinite(*val) ? 1 : 0;
}
int ieee_is_nan_4_ (GFC_REAL_4 *val)
{
return __builtin_isnan(*val) ? 1 : 0;
}
int ieee_is_nan_8_ (GFC_REAL_8 *val)
{
return __builtin_isnan(*val) ? 1 : 0;
}
int ieee_is_negative_4_ (GFC_REAL_4 *val)
{
return (__builtin_signbit(*val) && !__builtin_isnan(*val)) ? 1 : 0;
}
int ieee_is_negative_8_ (GFC_REAL_8 *val)
{
return (__builtin_signbit(*val) && !__builtin_isnan(*val)) ? 1 : 0;
}
int ieee_is_normal_4_ (GFC_REAL_4 *val)
{
return (__builtin_isnormal(*val) || *val == 0) ? 1 : 0;
}
int ieee_is_normal_8_ (GFC_REAL_8 *val)
{
return (__builtin_isnormal(*val) || *val == 0) ? 1 : 0;
}
GFC_REAL_4 ieee_copy_sign_4_4_ (GFC_REAL_4 *, GFC_REAL_4 *);
export_proto(ieee_copy_sign_4_4_);
GFC_REAL_4 ieee_copy_sign_4_4_ (GFC_REAL_4 *x, GFC_REAL_4 *y)
{
GFC_REAL_4 s = __builtin_signbit(*y) ? -1 : 1;
return __builtin_copysign(*x, s);
}
GFC_REAL_4 ieee_copy_sign_4_8_ (GFC_REAL_4 *, GFC_REAL_8 *);
export_proto(ieee_copy_sign_4_8_);
GFC_REAL_4 ieee_copy_sign_4_8_ (GFC_REAL_4 *x, GFC_REAL_8 *y)
{
GFC_REAL_4 s = __builtin_signbit(*y) ? -1 : 1;
return __builtin_copysign(*x, s);
}
GFC_REAL_8 ieee_copy_sign_8_4_ (GFC_REAL_8 *, GFC_REAL_4 *);
export_proto(ieee_copy_sign_8_4_);
GFC_REAL_8 ieee_copy_sign_8_4_ (GFC_REAL_8 *x, GFC_REAL_4 *y)
{
GFC_REAL_8 s = __builtin_signbit(*y) ? -1 : 1;
return __builtin_copysign(*x, s);
}
GFC_REAL_8 ieee_copy_sign_8_8_ (GFC_REAL_8 *, GFC_REAL_8 *);
export_proto(ieee_copy_sign_8_8_);
GFC_REAL_8 ieee_copy_sign_8_8_ (GFC_REAL_8 *x, GFC_REAL_8 *y)
{
GFC_REAL_8 s = __builtin_signbit(*y) ? -1 : 1;
return __builtin_copysign(*x, s);
}
int ieee_unordered_4_4_ (GFC_REAL_4 *, GFC_REAL_4 *);
export_proto(ieee_unordered_4_4_);
int ieee_unordered_4_4_ (GFC_REAL_4 *x, GFC_REAL_4 *y)
{
return __builtin_isunordered(*x, *y);
}
int ieee_unordered_4_8_ (GFC_REAL_4 *, GFC_REAL_8 *);
export_proto(ieee_unordered_4_8_);
int ieee_unordered_4_8_ (GFC_REAL_4 *x, GFC_REAL_8 *y)
{
return __builtin_isunordered(*x, *y);
}
int ieee_unordered_8_4_ (GFC_REAL_8 *, GFC_REAL_4 *);
export_proto(ieee_unordered_8_4_);
int ieee_unordered_8_4_ (GFC_REAL_8 *x, GFC_REAL_4 *y)
{
return __builtin_isunordered(*x, *y);
}
int ieee_unordered_8_8_ (GFC_REAL_8 *, GFC_REAL_8 *);
export_proto(ieee_unordered_8_8_);
int ieee_unordered_8_8_ (GFC_REAL_8 *x, GFC_REAL_8 *y)
{
return __builtin_isunordered(*x, *y);
}
/* Arithmetic functions (LOGB, NEXT_AFTER, REM, RINT, SCALB). */
GFC_REAL_4 ieee_logb_4_ (GFC_REAL_4 *);
export_proto(ieee_logb_4_);
GFC_REAL_4 ieee_logb_4_ (GFC_REAL_4 *x)
{
GFC_REAL_4 res;
char buffer[GFC_FPE_STATE_BUFFER_SIZE];
get_fpu_state (buffer);
res = __builtin_logb (*x);
set_fpu_state (buffer);
return res;
}
GFC_REAL_8 ieee_logb_8_ (GFC_REAL_8 *);
export_proto(ieee_logb_8_);
GFC_REAL_8 ieee_logb_8_ (GFC_REAL_8 *x)
{
GFC_REAL_8 res;
char buffer[GFC_FPE_STATE_BUFFER_SIZE];
get_fpu_state (buffer);
res = __builtin_logb (*x);
set_fpu_state (buffer);
return res;
}
GFC_REAL_4 ieee_next_after_4_4_ (GFC_REAL_4 *, GFC_REAL_4 *);
export_proto(ieee_next_after_4_4_);
GFC_REAL_4 ieee_next_after_4_4_ (GFC_REAL_4 *x, GFC_REAL_4 *y)
{
return __builtin_nextafterf (*x, *y);
}
GFC_REAL_4 ieee_next_after_4_8_ (GFC_REAL_4 *, GFC_REAL_8 *);
export_proto(ieee_next_after_4_8_);
GFC_REAL_4 ieee_next_after_4_8_ (GFC_REAL_4 *x, GFC_REAL_8 *y)
{
return __builtin_nextafterf (*x, *y);
}
GFC_REAL_8 ieee_next_after_8_4_ (GFC_REAL_8 *, GFC_REAL_4 *);
export_proto(ieee_next_after_8_4_);
GFC_REAL_8 ieee_next_after_8_4_ (GFC_REAL_8 *x, GFC_REAL_4 *y)
{
return __builtin_nextafter (*x, *y);
}
GFC_REAL_8 ieee_next_after_8_8_ (GFC_REAL_8 *, GFC_REAL_8 *);
export_proto(ieee_next_after_8_8_);
GFC_REAL_8 ieee_next_after_8_8_ (GFC_REAL_8 *x, GFC_REAL_8 *y)
{
return __builtin_nextafter (*x, *y);
}
GFC_REAL_4 ieee_rem_4_4_ (GFC_REAL_4 *, GFC_REAL_4 *);
export_proto(ieee_rem_4_4_);
GFC_REAL_4 ieee_rem_4_4_ (GFC_REAL_4 *x, GFC_REAL_4 *y)
{
GFC_REAL_4 res;
char buffer[GFC_FPE_STATE_BUFFER_SIZE];
get_fpu_state (buffer);
res = __builtin_remainderf (*x, *y);
set_fpu_state (buffer);
return res;
}
GFC_REAL_8 ieee_rem_4_8_ (GFC_REAL_4 *, GFC_REAL_8 *);
export_proto(ieee_rem_4_8_);
GFC_REAL_8 ieee_rem_4_8_ (GFC_REAL_4 *x, GFC_REAL_8 *y)
{
GFC_REAL_8 res;
char buffer[GFC_FPE_STATE_BUFFER_SIZE];
get_fpu_state (buffer);
res = __builtin_remainder (*x, *y);
set_fpu_state (buffer);
return res;
}
GFC_REAL_8 ieee_rem_8_4_ (GFC_REAL_8 *, GFC_REAL_4 *);
export_proto(ieee_rem_8_4_);
GFC_REAL_8 ieee_rem_8_4_ (GFC_REAL_8 *x, GFC_REAL_4 *y)
{
GFC_REAL_8 res;
char buffer[GFC_FPE_STATE_BUFFER_SIZE];
get_fpu_state (buffer);
res = __builtin_remainder (*x, *y);
set_fpu_state (buffer);
return res;
}
GFC_REAL_8 ieee_rem_8_8_ (GFC_REAL_8 *, GFC_REAL_8 *);
export_proto(ieee_rem_8_8_);
GFC_REAL_8 ieee_rem_8_8_ (GFC_REAL_8 *x, GFC_REAL_8 *y)
{
GFC_REAL_8 res;
char buffer[GFC_FPE_STATE_BUFFER_SIZE];
get_fpu_state (buffer);
res = __builtin_remainder (*x, *y);
set_fpu_state (buffer);
return res;
}
GFC_REAL_4 ieee_rint_4_ (GFC_REAL_4 *);
export_proto(ieee_rint_4_);
GFC_REAL_4 ieee_rint_4_ (GFC_REAL_4 *x)
{
GFC_REAL_4 res;
char buffer[GFC_FPE_STATE_BUFFER_SIZE];
get_fpu_state (buffer);
res = __builtin_rint (*x);
set_fpu_state (buffer);
return res;
}
GFC_REAL_8 ieee_rint_8_ (GFC_REAL_8 *);
export_proto(ieee_rint_8_);
GFC_REAL_8 ieee_rint_8_ (GFC_REAL_8 *x)
{
GFC_REAL_8 res;
char buffer[GFC_FPE_STATE_BUFFER_SIZE];
get_fpu_state (buffer);
res = __builtin_rint (*x);
set_fpu_state (buffer);
return res;
}
GFC_REAL_4 ieee_scalb_4_ (GFC_REAL_4 *, int *);
export_proto(ieee_scalb_4_);
GFC_REAL_4 ieee_scalb_4_ (GFC_REAL_4 *x, int *i)
{
return __builtin_scalbnf (*x, *i);
}
GFC_REAL_8 ieee_scalb_8_ (GFC_REAL_8 *, int *);
export_proto(ieee_scalb_8_);
GFC_REAL_8 ieee_scalb_8_ (GFC_REAL_8 *x, int *i)
{
return __builtin_scalbn (*x, *i);
}
#define GFC_FPE_ALL (GFC_FPE_INVALID | GFC_FPE_DENORMAL | \
GFC_FPE_ZERO | GFC_FPE_OVERFLOW | \
GFC_FPE_UNDERFLOW | GFC_FPE_INEXACT)
/* Functions to save and restore floating-point state, clear and restore
exceptions on procedure entry/exit. The rules we follow are set
in Fortran 2008's 14.3 paragraph 3, note 14.4, 14.4 paragraph 4,
14.5 paragraph 2, and 14.6 paragraph 1. */
void ieee_procedure_entry (void *);
export_proto(ieee_procedure_entry);
void
ieee_procedure_entry (void *state)
{
/* Save the floating-point state in the space provided by the caller. */
get_fpu_state (state);
/* Clear the floating-point exceptions. */
set_fpu_except_flags (0, GFC_FPE_ALL);
}
void ieee_procedure_exit (void *);
export_proto(ieee_procedure_exit);
void
ieee_procedure_exit (void *state)
{
/* Get the flags currently signaling. */
int flags = get_fpu_except_flags ();
/* Restore the floating-point state we had on entry. */
set_fpu_state (state);
/* And re-raised the flags that were raised since entry. */
set_fpu_except_flags (flags, 0);
}

26
libgfortran/libgfortran.h
View file

@ -754,15 +754,39 @@ internal_proto(gf_strerror);
extern void set_fpu (void);
internal_proto(set_fpu);
extern int get_fpu_trap_exceptions (void);
internal_proto(get_fpu_trap_exceptions);
extern void set_fpu_trap_exceptions (int, int);
internal_proto(set_fpu_trap_exceptions);
extern int support_fpu_trap (int);
internal_proto(support_fpu_trap);
extern int get_fpu_except_flags (void);
internal_proto(get_fpu_except_flags);
extern void set_fpu_rounding_mode (int round);
extern void set_fpu_except_flags (int, int);
internal_proto(set_fpu_except_flags);
extern int support_fpu_flag (int);
internal_proto(support_fpu_flag);
extern void set_fpu_rounding_mode (int);
internal_proto(set_fpu_rounding_mode);
extern int get_fpu_rounding_mode (void);
internal_proto(get_fpu_rounding_mode);
extern int support_fpu_rounding_mode (int);
internal_proto(support_fpu_rounding_mode);
extern void get_fpu_state (void *);
internal_proto(get_fpu_state);
extern void set_fpu_state (void *);
internal_proto(set_fpu_state);
/* memory.c */
extern void *xmalloc (size_t) __attribute__ ((malloc));