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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-exception7//8//===----------------------------------------------------------------------===//9 10#ifndef _LIBCPP_CFENV11#define _LIBCPP_CFENV12 13/*14 cfenv synopsis15 16This entire header is C99 / C++0X17 18Macros:19 20 FE_DIVBYZERO21 FE_INEXACT22 FE_INVALID23 FE_OVERFLOW24 FE_UNDERFLOW25 FE_ALL_EXCEPT26 FE_DOWNWARD27 FE_TONEAREST28 FE_TOWARDZERO29 FE_UPWARD30 FE_DFL_ENV31 32namespace std33{34 35Types:36 37 fenv_t38 fexcept_t39 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} // std53*/54 55#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)56# include <__cxx03/cfenv>57#else58# include <__config>59 60# include <fenv.h>61 62# ifndef _LIBCPP_FENV_H63# error <cfenv> tried including <fenv.h> but didn't find libc++'s <fenv.h> header. \64 This usually means that your header search paths are not configured properly. \65 The header search paths should contain the C++ Standard Library headers before \66 any C Standard Library, and you are probably using compiler flags that make that \67 not be the case.68# endif69 70# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)71# pragma GCC system_header72# endif73 74_LIBCPP_BEGIN_NAMESPACE_STD75 76using ::fenv_t _LIBCPP_USING_IF_EXISTS;77using ::fexcept_t _LIBCPP_USING_IF_EXISTS;78 79using ::feclearexcept _LIBCPP_USING_IF_EXISTS;80using ::fegetexceptflag _LIBCPP_USING_IF_EXISTS;81using ::feraiseexcept _LIBCPP_USING_IF_EXISTS;82using ::fesetexceptflag _LIBCPP_USING_IF_EXISTS;83using ::fetestexcept _LIBCPP_USING_IF_EXISTS;84using ::fegetround _LIBCPP_USING_IF_EXISTS;85using ::fesetround _LIBCPP_USING_IF_EXISTS;86using ::fegetenv _LIBCPP_USING_IF_EXISTS;87using ::feholdexcept _LIBCPP_USING_IF_EXISTS;88using ::fesetenv _LIBCPP_USING_IF_EXISTS;89using ::feupdateenv _LIBCPP_USING_IF_EXISTS;90 91_LIBCPP_END_NAMESPACE_STD92 93#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)94 95#endif // _LIBCPP_CFENV96