37 lines
1.2 KiB
C++
37 lines
1.2 KiB
C++
// Copyright (C) 2016-2024 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// { dg-do compile { target c++11 } }
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#include <cmath>
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// Also make names from <cmath> available in the global namespace:
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#include <math.h>
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bool foo(double d)
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{
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return ::isfinite(d); // PR libstdc++/14608
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}
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int bar(double d)
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{
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return ::signbit(d); // PR libstdc++/44611
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}
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constexpr bool is_double(double) { return true; }
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template<typename T> constexpr bool is_double(T) { return false; }
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using type = decltype(::abs(1.5));
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static_assert(is_double(type{}), "::abs(double) overload exists in <math.h>");
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