| 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 | |
| 16 | This entire header is C99 / C++0X |
| 17 | |
| 18 | Macros: |
| 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 | |
| 32 | namespace std |
| 33 | { |
| 34 | |
| 35 | Types: |
| 36 | |
| 37 | fenv_t |
| 38 | fexcept_t |
| 39 | |
| 40 | int feclearexcept(int excepts); |
| 41 | int fegetexceptflag(fexcept_t* flagp, int excepts); |
| 42 | int feraiseexcept(int excepts); |
| 43 | int fesetexceptflag(const fexcept_t* flagp, int excepts); |
| 44 | int fetestexcept(int excepts); |
| 45 | int fegetround(); |
| 46 | int fesetround(int round); |
| 47 | int fegetenv(fenv_t* envp); |
| 48 | int feholdexcept(fenv_t* envp); |
| 49 | int fesetenv(const fenv_t* envp); |
| 50 | int feupdateenv(const fenv_t* envp); |
| 51 | |
| 52 | } // std |
| 53 | */ |
| 54 | |
| 55 | #if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS) |
| 56 | # include <__cxx03/cfenv> |
| 57 | #else |
| 58 | # include <__config> |
| 59 | |
| 60 | # if __has_include(<fenv.h>) |
| 61 | # include <fenv.h> |
| 62 | # ifdef _LIBCPP_FENV_H |
| 63 | # error "If libc++ starts defining <fenv.h>, the __has_include check should move to libc++'s <fenv.h>" |
| 64 | # endif |
| 65 | # endif |
| 66 | |
| 67 | # if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| 68 | # pragma GCC system_header |
| 69 | # endif |
| 70 | |
| 71 | _LIBCPP_BEGIN_NAMESPACE_STD |
| 72 | |
| 73 | using ::fenv_t _LIBCPP_USING_IF_EXISTS; |
| 74 | using ::fexcept_t _LIBCPP_USING_IF_EXISTS; |
| 75 | |
| 76 | using ::feclearexcept _LIBCPP_USING_IF_EXISTS; |
| 77 | using ::fegetexceptflag _LIBCPP_USING_IF_EXISTS; |
| 78 | using ::feraiseexcept _LIBCPP_USING_IF_EXISTS; |
| 79 | using ::fesetexceptflag _LIBCPP_USING_IF_EXISTS; |
| 80 | using ::fetestexcept _LIBCPP_USING_IF_EXISTS; |
| 81 | using ::fegetround _LIBCPP_USING_IF_EXISTS; |
| 82 | using ::fesetround _LIBCPP_USING_IF_EXISTS; |
| 83 | using ::fegetenv _LIBCPP_USING_IF_EXISTS; |
| 84 | using ::feholdexcept _LIBCPP_USING_IF_EXISTS; |
| 85 | using ::fesetenv _LIBCPP_USING_IF_EXISTS; |
| 86 | using ::feupdateenv _LIBCPP_USING_IF_EXISTS; |
| 87 | |
| 88 | _LIBCPP_END_NAMESPACE_STD |
| 89 | |
| 90 | #endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS) |
| 91 | |
| 92 | #endif // _LIBCPP_CFENV |