libcxx/include/cfenv

// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP_CFENV
#define _LIBCPP_CFENV

/*
    cfenv synopsis

This entire header is C99 / C++0X

Macros:

    FE_DIVBYZERO
    FE_INEXACT
    FE_INVALID
    FE_OVERFLOW
    FE_UNDERFLOW
    FE_ALL_EXCEPT
    FE_DOWNWARD
    FE_TONEAREST
    FE_TOWARDZERO
    FE_UPWARD
    FE_DFL_ENV

namespace std
{

Types:

    fenv_t
    fexcept_t

int feclearexcept(int excepts);
int fegetexceptflag(fexcept_t* flagp, int excepts);
int feraiseexcept(int excepts);
int fesetexceptflag(const fexcept_t* flagp, int excepts);
int fetestexcept(int excepts);
int fegetround();
int fesetround(int round);
int fegetenv(fenv_t* envp);
int feholdexcept(fenv_t* envp);
int fesetenv(const fenv_t* envp);
int feupdateenv(const fenv_t* envp);

}  // std
*/

#include <__assert> // all public C++ headers provide the assertion handler
#include <__config>

#include <fenv.h>

#ifndef _LIBCPP_FENV_H
#   error <cfenv> tried including <fenv.h> but didn't find libc++'s <fenv.h> header. \
          This usually means that your header search paths are not configured properly. \
          The header search paths should contain the C++ Standard Library headers before \
          any C Standard Library, and you are probably using compiler flags that make that \
          not be the case.
#endif

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#  pragma GCC system_header
#endif

_LIBCPP_BEGIN_NAMESPACE_STD

using ::fenv_t _LIBCPP_USING_IF_EXISTS;
using ::fexcept_t _LIBCPP_USING_IF_EXISTS;

using ::feclearexcept _LIBCPP_USING_IF_EXISTS;
using ::fegetexceptflag _LIBCPP_USING_IF_EXISTS;
using ::feraiseexcept _LIBCPP_USING_IF_EXISTS;
using ::fesetexceptflag _LIBCPP_USING_IF_EXISTS;
using ::fetestexcept _LIBCPP_USING_IF_EXISTS;
using ::fegetround _LIBCPP_USING_IF_EXISTS;
using ::fesetround _LIBCPP_USING_IF_EXISTS;
using ::fegetenv _LIBCPP_USING_IF_EXISTS;
using ::feholdexcept _LIBCPP_USING_IF_EXISTS;
using ::fesetenv _LIBCPP_USING_IF_EXISTS;
using ::feupdateenv _LIBCPP_USING_IF_EXISTS;

_LIBCPP_END_NAMESPACE_STD

#endif // _LIBCPP_CFENV