diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog index 7ad59c9ee2e..b331fff8500 100644 --- a/libstdc++-v3/ChangeLog +++ b/libstdc++-v3/ChangeLog @@ -1,3 +1,14 @@ +2002-08-02 Gabriel Dos Reis + + * include/bits/valarray_meta.h (__unary_plus, __negate, + __bitwise_not, __plus, __minus, __multiplies, __divides, + __modulus, __bitwise_xor, __bitwise_or, __bitwise_and, + __shift_left, __shift_right, __logical_and, __logical_or, + __logical_not, __equal_to, __not_equal_to, __less, __less_equal, + __greater_equal, __greater, __atan2, __pow): New function object + classes. + (__fun<>): New function traits class. + 2002-08-01 Rick Danos PR libstdc++/7461 diff --git a/libstdc++-v3/include/bits/valarray_meta.h b/libstdc++-v3/include/bits/valarray_meta.h index 689f715b5c1..d5e758f6d9a 100644 --- a/libstdc++-v3/include/bits/valarray_meta.h +++ b/libstdc++-v3/include/bits/valarray_meta.h @@ -165,6 +165,240 @@ namespace std _Tp operator()(const _Tp& __t) const { return sqrt(__t); } }; + // In the past, we used to tailor operator applications semantics + // to the specialization of standard function objects (i.e. plus<>, etc.) + // That is incorrect. Therefore we provide our own surrogates. + + struct __unary_plus + { + template + _Tp operator()(const _Tp& __t) const { return +__t; } + }; + + struct __negate + { + template + _Tp operator()(const _Tp& __t) const { return -__t; } + }; + + struct __bitwise_not + { + template + _Tp operator()(const _Tp& __t) const { return ~__t; } + }; + + struct __plus + { + template + _Tp operator()(const _Tp& __x, const _Tp& __y) const + { return __x + __y; } + }; + + struct __minus + { + template + _Tp operator()(const _Tp& __x, const _Tp& __y) const + { return __x - __y; } + }; + + struct __multiplies + { + template + _Tp operator()(const _Tp& __x, const _Tp& __y) const + { return __x * __y; } + }; + + struct __divides + { + template + _Tp operator()(const _Tp& __x, const _Tp& __y) const + { return __x / __y; } + }; + + struct __modulus + { + template + _Tp operator()(const _Tp& __x, const _Tp& __y) const + { return __x % __y; } + }; + + struct __bitwise_xor + { + template + _Tp operator()(const _Tp& __x, const _Tp& __y) const + { return __x ^ __y; } + }; + + struct __bitwise_and + { + template + _Tp operator()(const _Tp& __x, const _Tp& __y) const + { return __x & __y; } + }; + + struct __bitwise_or + { + template + _Tp operator()(const _Tp& __x, const _Tp& __y) const + { return __x | __y; } + }; + + struct __shift__left + { + template + _Tp operator()(const _Tp& __x, const _Tp& __y) const + { return __x << __y; } + }; + + struct __shift_right + { + template + _Tp operator()(const _Tp& __x, const _Tp& __y) const + { return __x >> __y; } + }; + + struct __logical_and + { + template + bool operator()(const _Tp& __x, const _Tp& __y) const + { return __x && __y; } + }; + + struct __logical_or + { + template + bool operator()(const _Tp& __x, const _Tp& __y) const + { return __x || __y; } + }; + + struct __logical_not + { + template + bool operator()(const _Tp& __x) const { return !__x; } + }; + + struct __equal_to + { + template + bool operator()(const _Tp& __x, const _Tp& __y) const + { return __x == __y; } + }; + + struct __not_equal_to + { + template + bool operator()(const _Tp& __x, const _Tp& __y) const + { return __x == __y; } + }; + + struct __less + { + template + bool operator()(const _Tp& __x, const _Tp& __y) const + { return __x < __y; } + }; + + struct __greater + { + template + bool operator()(const _Tp& __x, const _Tp& __y) const + { return __x > __y; } + }; + + struct __less_equal + { + template + bool operator()(const _Tp& __x, const _Tp& __y) const + { return __x <= __y; } + }; + + struct __greater_equal + { + template + bool operator()(const _Tp& __x, const _Tp& __y) const + { return __x >= __y; } + }; + + // The few binary functions we miss. + struct __atan2 + { + template + _Tp operator()(const _Tp& __x, const _Tp& __y) const + { return atan2(__x, __y); } + }; + + struct __pow + { + template + _Tp operator()(const _Tp& __x, const _Tp& __y) const + { return pow(__x, __y); } + }; + + + // We need these bits in order to recover the return type of + // some functions/operators now that we're no longer using + // function templates. + template + struct __fun + { + typedef _Tp result_type; + }; + + // several specializations for relational operators. + template + struct __fun<__logical_not, _Tp> + { + typedef bool result_type; + }; + + template + struct __fun<__logical_and, _Tp> + { + typedef bool result_type; + }; + + template + struct __fun<__logical_or, _Tp> + { + typedef bool result_type; + }; + + template + struct __fun<__less, _Tp> + { + typedef bool result_type; + }; + + template + struct __fun<__greater, _Tp> + { + typedef bool result_type; + }; + + template + struct __fun<__less_equal, _Tp> + { + typedef bool result_type; + }; + + template + struct __fun<__greater_equal, _Tp> + { + typedef bool result_type; + }; + + template + struct __fun<__equal_to, _Tp> + { + typedef bool result_type; + }; + + template + struct __fun<__not_equal_to, _Tp> + { + typedef bool result_type; + }; + template class _Meta, class _Dom, typename _Op> class _UnFunClos;