efd039a62e
This fails with gcc because __builtin_isnan and friends, which libcpp_isnan and friends call, are not themselves constexpr-evaluatable. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@287041 91177308-0d34-0410-b5e6-96231b3b80d8
34 lines
1.1 KiB
C++
34 lines
1.1 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// Check that the overloads of std::__libcpp_{isnan,isinf,isfinite} that take
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// floating-point values are evaluatable from constexpr contexts.
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//
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// These functions need to be constexpr in order to be called from CUDA, see
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// https://reviews.llvm.org/D25403. They don't actually need to be
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// constexpr-evaluatable, but that's what we check here, since we can't check
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// true constexpr-ness.
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//
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// This fails with gcc because __builtin_isnan and friends, which libcpp_isnan
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// and friends call, are not themselves constexpr-evaluatable.
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//
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// UNSUPPORTED: c++98, c++03
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// XFAIL: gcc
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#include <cmath>
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constexpr bool a = std::__libcpp_isnan(0.);
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constexpr bool b = std::__libcpp_isinf(0.0);
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constexpr bool c = std::__libcpp_isfinite(0.0);
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int main()
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{
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return 0;
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}
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