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Document unsigned constants in intrinsic modules.

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gcc/fortran/ChangeLog:

	* intrinsic.texi (ISO_FORTRAN_ENV):  Also mention INT8 in the
	text. Document UINT8, UINT16, UINT32 and UINT64.
	(ISO_C_BINDING): New table for unsigned KIND numbers.
This commit is contained in:
Thomas Koenig 2025-01-07 15:23:29 +01:00
parent c5db3f50bd
commit d6b1d5deb2
1 changed files with 34 additions and 1 deletions
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35
gcc/fortran/intrinsic.texi
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@ -15305,7 +15305,7 @@ Identifies the preconnected unit identified by the asterisk
@item @code{INT8}, @code{INT16}, @code{INT32}, @code{INT64}:
Kind type parameters to specify an INTEGER type with a storage
size of 16, 32, and 64 bits. It is negative if a target platform
size of 8, 16, 32, and 64 bits. It is negative if a target platform
does not support the particular kind. (Fortran 2008 or later.)
@item @code{INTEGER_KINDS}:
@ -15368,6 +15368,12 @@ in the failed state. (TS 18508 or later.)
@item @code{STAT_UNLOCKED}:
Scalar default-integer constant used as @code{STAT=} return value by @code{UNLOCK} to
denote that the lock variable is unlocked. (Fortran 2008 or later.)
@item @code{UINT8}, @code{UINT16}, @code{UINT32}, @code{UINT64}:
Kind type parameters to specify an UNSIGNED type with a storage
size of 8, 16, 32, and 64 bits. It is negative if a target platform
does not support the particular kind. (Extension, @pxref{Unsigned integers}.)
@end table
The module provides the following derived type:
@ -15455,6 +15461,33 @@ Furthermore, if @code{_Float128} is supported in C, the named constants
@item @code{CHARACTER}@tab @code{C_CHAR} @tab @code{char}
@end multitable
GNU Fortran also provides as an extension, named constants for
@code{UNSIGNED} integers @pxref{Unsigned integers}.
@multitable @columnfractions .20 0.40 0.40
@headitem Fortran Type @tab Named constant @tab C type
@item @code{UNSIGNED}@tab @code{C_UNSIGNED} @tab @code{unsigned int}
@item @code{UNSIGNED}@tab @code{C_UNSIGNED_SHORT} @tab @code{unsigned short}
@item @code{UNSIGNED}@tab @code{C_UNSIGNED_CHAR} @tab @code{unsigned char}
@item @code{UNSINGED}@tab @code{C_UNSIGNED_LONG} @tab @code{unsigned long}
@item @code{UNSINGED}@tab @code{C_UNSIGNED_LONG_LONG} @tab @code{unsigned long long}
@item @code{UNSIGNED}@tab @code{C_UINTMAX_T} @tab @code{uintmax_t}
@item @code{UNSIGNED}@tab @code{C_UINT8_T} @tab @code{uint8_t}
@item @code{UNSIGNED}@tab @code{C_UINT16_T} @tab @code{uint16_t}
@item @code{UNSIGNED}@tab @code{C_UINT32_T} @tab @code{uint32_t}
@item @code{UNSIGNED}@tab @code{C_UINT64_T} @tab @code{uint64_t}
@item @code{UNSIGNED}@tab @code{C_UINT128_T} @tab @code{uint128_t}
@item @code{UNSIGNED}@tab @code{C_UINT_FAST8_T} @tab @code{uint_fast8_t}
@item @code{UNSIGNED}@tab @code{C_UINT_FAST16_T} @tab @code{uint_fast16_t}
@item @code{UNSIGNED}@tab @code{C_UINT_FAST32_T} @tab @code{uint_fast32_t}
@item @code{UNSIGNED}@tab @code{C_UINT_FAST64_T} @tab @code{uint_fast64_t}
@item @code{UNSIGNED}@tab @code{C_UINT_FAST128_T} @tab @code{uint_fast128_t}
@item @code{UNSIGNED}@tab @code{C_UINT_LEAST8_T} @tab @code{uint_least8_t}
@item @code{UNSIGNED}@tab @code{C_UINT_LEAST16_T} @tab @code{uint_least16_t}
@item @code{UNSIGNED}@tab @code{C_UINT_LEAST32_T} @tab @code{uint_least32_t}
@item @code{UNSIGNED}@tab @code{C_UINT_LEAST64_T} @tab @code{uint_least64_t}
@item @code{UNSIGNED}@tab @code{C_UINT_LEAST128_T} @tab @code{uint_least128_t}
@end multitable
Additionally, the following parameters of type @code{CHARACTER(KIND=C_CHAR)}
are defined.