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a5544970 | 1 | // Copyright (C) 2016-2019 Free Software Foundation, Inc. |
96e19ada JW |
2 | // |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 3, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING3. If not see | |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
52066eae | 18 | // { dg-do compile { target c++11 } } |
96e19ada JW |
19 | |
20 | #include <cmath> | |
21 | // Also make names from <cmath> available in the global namespace: | |
22 | #include <math.h> | |
23 | ||
24 | bool foo(double d) | |
25 | { | |
26 | return ::isfinite(d); // PR libstdc++/14608 | |
27 | } | |
28 | ||
29 | int bar(double d) | |
30 | { | |
31 | return ::signbit(d); // PR libstdc++/44611 | |
32 | } | |
33 | ||
34 | constexpr bool is_double(double) { return true; } | |
35 | template<typename T> constexpr bool is_double(T) { return false; } | |
36 | using type = decltype(::abs(1.5)); | |
37 | static_assert(is_double(type{}), "::abs(double) overload exists in <math.h>"); |