| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // Check that the overloads of std::__libcpp_{isnan,isinf,isfinite} that take |
| // floating-point values are evaluatable from constexpr contexts. |
| // |
| // These functions need to be constexpr in order to be called from CUDA, see |
| // https://reviews.llvm.org/D25403. They don't actually need to be |
| // constexpr-evaluatable, but that's what we check here, since we can't check |
| // true constexpr-ness. |
| // |
| // This fails with gcc because __builtin_isnan and friends, which libcpp_isnan |
| // and friends call, are not themselves constexpr-evaluatable. |
| // |
| // UNSUPPORTED: c++98, c++03 |
| // XFAIL: gcc |
| |
| #include <cmath> |
| |
| static_assert(std::__libcpp_isnan_or_builtin(0.) == false, ""); |
| static_assert(std::__libcpp_isinf_or_builtin(0.0) == false, ""); |
| static_assert(std::__libcpp_isfinite_or_builtin(0.0) == true, ""); |
| |
| int main() |
| { |
| } |
