diff options
| author | Gabriel Dos Reis <gdr@integrable-solutions.net> | 2003-05-11 09:07:17 +0000 |
|---|---|---|
| committer | Gabriel Dos Reis <gdr@integrable-solutions.net> | 2003-05-11 09:07:17 +0000 |
| commit | 438c6f457273b4cadc1cd459fd4c119ad8a3653c (patch) | |
| tree | 461d69e0788dca2c949e2cf6b54556cd5cdfdace /libstdc++-v3/include/bits/cpp_type_traits.h | |
| parent | 9d69b5ed151c268ea3df58f5546453e9eb8dfdb4 (diff) | |
PR libstdc++/3181
* include/c_std/std_cmath.h: #include <bits/cpp_type_traits.h>
(acos): Handle integer argument.
(asin): Likewise.
(atan): Likewise.
(atan2): Likewise.
(ceil): Likewise.
(cos): Likewise.
(cosh): Likewise.
(exp): Likewise.
(fabs): Likewise.
(floor): Likewise.
(frexp): Likewise.
(ldexp): Likewise.
(log): Likewise.
(log10): Likewise.
(sin): Likewise.
(sinh): Likewise.
(sqrt): Likewise.
(tan): Likewise.
(tanh): Likewise.
* include/bits/cpp_type_traits.h (__are_same<>): New traits.
(__enable_if): Likewise.
* testsuite/26_numerics/cmath/overloads.C: New test.
git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@66681 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libstdc++-v3/include/bits/cpp_type_traits.h')
| -rw-r--r-- | libstdc++-v3/include/bits/cpp_type_traits.h | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/libstdc++-v3/include/bits/cpp_type_traits.h b/libstdc++-v3/include/bits/cpp_type_traits.h index d66fe763841..415150275c4 100644 --- a/libstdc++-v3/include/bits/cpp_type_traits.h +++ b/libstdc++-v3/include/bits/cpp_type_traits.h @@ -1,6 +1,6 @@ // The -*- C++ -*- type traits classes for internal use in libstdc++ -// Copyright (C) 2000, 2001 Free Software Foundation, Inc. +// Copyright (C) 2000, 2001, 2002, 2003 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the @@ -66,6 +66,38 @@ namespace std { + // Compare for equality of types. + template<typename, typename> + struct __are_same + { + enum + { + _M_type = 0 + }; + }; + + template<typename _Tp> + struct __are_same<_Tp, _Tp> + { + enum + { + _M_type = 1 + }; + }; + + // Define a nested type if some predicate holds. + template<typename, bool> + struct __enable_if + { + }; + + template<typename _Tp> + struct __enable_if<_Tp, true> + { + typedef _Tp _M_type; + }; + + // Holds if the template-argument is a void type. template<typename _Tp> struct __is_void { |