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ecc2c089fd
Summary: Some implementations of fenv.h use macros to define the functions they provide. This can cause problems when `std::fegetround()` is spelled in source. This patch adds a `fenv.h` header to libc++ for the sole purpose of turning those macros into real functions. Reviewers: rsmith, mclow.lists, ldionne Reviewed By: rsmith Subscribers: mgorny, christof, libcxx-commits Differential Revision: https://reviews.llvm.org/D57729 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@353767 91177308-0d34-0410-b5e6-96231b3b80d8
78 lines
2.0 KiB
C++
78 lines
2.0 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// XFAIL: newlib
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// <fenv.h>
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#include <fenv.h>
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#include <type_traits>
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#ifndef FE_DIVBYZERO
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#error FE_DIVBYZERO not defined
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#endif
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#ifndef FE_INEXACT
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#error FE_INEXACT not defined
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#endif
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#ifndef FE_INVALID
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#error FE_INVALID not defined
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#endif
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#ifndef FE_OVERFLOW
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#error FE_OVERFLOW not defined
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#endif
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#ifndef FE_UNDERFLOW
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#error FE_UNDERFLOW not defined
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#endif
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#ifndef FE_ALL_EXCEPT
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#error FE_ALL_EXCEPT not defined
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#endif
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#ifndef FE_DOWNWARD
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#error FE_DOWNWARD not defined
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#endif
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#ifndef FE_TONEAREST
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#error FE_TONEAREST not defined
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#endif
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#ifndef FE_TOWARDZERO
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#error FE_TOWARDZERO not defined
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#endif
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#ifndef FE_UPWARD
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#error FE_UPWARD not defined
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#endif
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#ifndef FE_DFL_ENV
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#error FE_DFL_ENV not defined
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#endif
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int main(int, char**)
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{
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fenv_t fenv = {};
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fexcept_t fex = 0;
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static_assert((std::is_same<decltype(::feclearexcept(0)), int>::value), "");
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static_assert((std::is_same<decltype(::fegetexceptflag(&fex, 0)), int>::value), "");
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static_assert((std::is_same<decltype(::feraiseexcept(0)), int>::value), "");
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static_assert((std::is_same<decltype(::fesetexceptflag(&fex, 0)), int>::value), "");
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static_assert((std::is_same<decltype(::fetestexcept(0)), int>::value), "");
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static_assert((std::is_same<decltype(::fegetround()), int>::value), "");
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static_assert((std::is_same<decltype(::fesetround(0)), int>::value), "");
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static_assert((std::is_same<decltype(::fegetenv(&fenv)), int>::value), "");
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static_assert((std::is_same<decltype(::feholdexcept(&fenv)), int>::value), "");
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static_assert((std::is_same<decltype(::fesetenv(&fenv)), int>::value), "");
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static_assert((std::is_same<decltype(::feupdateenv(&fenv)), int>::value), "");
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return 0;
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}
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