1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP_CFENV 11#define _LIBCPP_CFENV 12 13/* 14 cfenv synopsis 15 16This entire header is C99 / C++0X 17 18Macros: 19 20 FE_DIVBYZERO 21 FE_INEXACT 22 FE_INVALID 23 FE_OVERFLOW 24 FE_UNDERFLOW 25 FE_ALL_EXCEPT 26 FE_DOWNWARD 27 FE_TONEAREST 28 FE_TOWARDZERO 29 FE_UPWARD 30 FE_DFL_ENV 31 32namespace std 33{ 34 35Types: 36 37 fenv_t 38 fexcept_t 39 40int feclearexcept(int excepts); 41int fegetexceptflag(fexcept_t* flagp, int excepts); 42int feraiseexcept(int excepts); 43int fesetexceptflag(const fexcept_t* flagp, int excepts); 44int fetestexcept(int excepts); 45int fegetround(); 46int fesetround(int round); 47int fegetenv(fenv_t* envp); 48int feholdexcept(fenv_t* envp); 49int fesetenv(const fenv_t* envp); 50int feupdateenv(const fenv_t* envp); 51 52} // std 53*/ 54 55#include <__assert> // all public C++ headers provide the assertion handler 56#include <__config> 57 58#include <fenv.h> 59 60#ifndef _LIBCPP_FENV_H 61# error <cfenv> tried including <fenv.h> but didn't find libc++'s <fenv.h> header. \ 62 This usually means that your header search paths are not configured properly. \ 63 The header search paths should contain the C++ Standard Library headers before \ 64 any C Standard Library, and you are probably using compiler flags that make that \ 65 not be the case. 66#endif 67 68#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 69# pragma GCC system_header 70#endif 71 72_LIBCPP_BEGIN_NAMESPACE_STD 73 74using ::fenv_t _LIBCPP_USING_IF_EXISTS; 75using ::fexcept_t _LIBCPP_USING_IF_EXISTS; 76 77using ::feclearexcept _LIBCPP_USING_IF_EXISTS; 78using ::fegetexceptflag _LIBCPP_USING_IF_EXISTS; 79using ::feraiseexcept _LIBCPP_USING_IF_EXISTS; 80using ::fesetexceptflag _LIBCPP_USING_IF_EXISTS; 81using ::fetestexcept _LIBCPP_USING_IF_EXISTS; 82using ::fegetround _LIBCPP_USING_IF_EXISTS; 83using ::fesetround _LIBCPP_USING_IF_EXISTS; 84using ::fegetenv _LIBCPP_USING_IF_EXISTS; 85using ::feholdexcept _LIBCPP_USING_IF_EXISTS; 86using ::fesetenv _LIBCPP_USING_IF_EXISTS; 87using ::feupdateenv _LIBCPP_USING_IF_EXISTS; 88 89_LIBCPP_END_NAMESPACE_STD 90 91#endif // _LIBCPP_CFENV 92