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llvm-project/libcxx/include/fenv.h

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Add fenv.h header 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 llvm-svn: 353767
2019-02-12 07:47:19 +08:00
// -*- C++ -*-
//===---------------------------- math.h ----------------------------------===//
//
// 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_FENV_H
#define _LIBCPP_FENV_H
/*
fenv.h 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
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);
*/
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
Mark fenv.h as a system header before the #include_next directive This fixes a -Wgnu-include-next warning Patch by dmauro. llvm-svn: 357267
2019-03-30 00:03:57 +08:00
#include_next <fenv.h>
Add fenv.h header 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 llvm-svn: 353767
2019-02-12 07:47:19 +08:00
#ifdef __cplusplus
extern "C++" {
#ifdef feclearexcept
#undef feclearexcept
Don't declare fenv.h functions when they're a macro. libc still provides function declarations, and these declarations conflict with libc++'s llvm-svn: 353774
2019-02-12 08:05:14 +08:00
#endif
Add fenv.h header 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 llvm-svn: 353767
2019-02-12 07:47:19 +08:00
#ifdef fegetexceptflag
#undef fegetexceptflag
Don't declare fenv.h functions when they're a macro. libc still provides function declarations, and these declarations conflict with libc++'s llvm-svn: 353774
2019-02-12 08:05:14 +08:00
#endif
Add fenv.h header 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 llvm-svn: 353767
2019-02-12 07:47:19 +08:00
#ifdef feraiseexcept
#undef feraiseexcept
Don't declare fenv.h functions when they're a macro. libc still provides function declarations, and these declarations conflict with libc++'s llvm-svn: 353774
2019-02-12 08:05:14 +08:00
#endif
Add fenv.h header 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 llvm-svn: 353767
2019-02-12 07:47:19 +08:00
#ifdef fesetexceptflag
#undef fesetexceptflag
Don't declare fenv.h functions when they're a macro. libc still provides function declarations, and these declarations conflict with libc++'s llvm-svn: 353774
2019-02-12 08:05:14 +08:00
#endif
Add fenv.h header 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 llvm-svn: 353767
2019-02-12 07:47:19 +08:00
#ifdef fetestexcept
#undef fetestexcept
Don't declare fenv.h functions when they're a macro. libc still provides function declarations, and these declarations conflict with libc++'s llvm-svn: 353774
2019-02-12 08:05:14 +08:00
#endif
Add fenv.h header 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 llvm-svn: 353767
2019-02-12 07:47:19 +08:00
#ifdef fegetround
#undef fegetround
Don't declare fenv.h functions when they're a macro. libc still provides function declarations, and these declarations conflict with libc++'s llvm-svn: 353774
2019-02-12 08:05:14 +08:00
#endif
Add fenv.h header 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 llvm-svn: 353767
2019-02-12 07:47:19 +08:00
#ifdef fesetround
#undef fesetround
Don't declare fenv.h functions when they're a macro. libc still provides function declarations, and these declarations conflict with libc++'s llvm-svn: 353774
2019-02-12 08:05:14 +08:00
#endif
Add fenv.h header 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 llvm-svn: 353767
2019-02-12 07:47:19 +08:00
#ifdef fegetenv
#undef fegetenv
Don't declare fenv.h functions when they're a macro. libc still provides function declarations, and these declarations conflict with libc++'s llvm-svn: 353774
2019-02-12 08:05:14 +08:00
#endif
Add fenv.h header 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 llvm-svn: 353767
2019-02-12 07:47:19 +08:00
#ifdef feholdexcept
#undef feholdexcept
Don't declare fenv.h functions when they're a macro. libc still provides function declarations, and these declarations conflict with libc++'s llvm-svn: 353774
2019-02-12 08:05:14 +08:00
#endif
Add fenv.h header 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 llvm-svn: 353767
2019-02-12 07:47:19 +08:00
#ifdef fesetenv
#undef fesetenv
Don't declare fenv.h functions when they're a macro. libc still provides function declarations, and these declarations conflict with libc++'s llvm-svn: 353774
2019-02-12 08:05:14 +08:00
#endif
Add fenv.h header 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 llvm-svn: 353767
2019-02-12 07:47:19 +08:00
#ifdef feupdateenv
#undef feupdateenv
Don't declare fenv.h functions when they're a macro. libc still provides function declarations, and these declarations conflict with libc++'s llvm-svn: 353774
2019-02-12 08:05:14 +08:00
#endif
Add fenv.h header 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 llvm-svn: 353767
2019-02-12 07:47:19 +08:00
} // extern "C++"
#endif // defined(__cplusplus)
#endif // _LIBCPP_FENV_H