| /* Copyright (C) 1997-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef _FENV_H |
| # error "Never use <bits/fenv.h> directly; include <fenv.h> instead." |
| #endif |
| |
| |
| /* Here should be the exception be defined: |
| FE_INVALID |
| FE_DIVBYZERO |
| FE_OVERFLOW |
| FE_UNDERFLOW |
| FE_INEXACT |
| We define no macro which signals no exception is supported. */ |
| |
| #define FE_ALL_EXCEPT 0 |
| |
| |
| /* Here should the rounding modes be defined: |
| FE_TONEAREST |
| FE_DOWNWARD |
| FE_UPWARD |
| FE_TOWARDZERO |
| We define no macro which signals no rounding mode is selectable. */ |
| |
| |
| /* Type representing exception flags. */ |
| typedef unsigned int fexcept_t; |
| |
| |
| /* Type representing floating-point environment. */ |
| typedef struct |
| { |
| fexcept_t __excepts; |
| /* XXX I don't know what else we should save. */ |
| } |
| fenv_t; |
| |
| /* If the default argument is used we use this value. */ |
| #define FE_DFL_ENV ((const fenv_t *) -1l) |
| |
| #if __GLIBC_USE (IEC_60559_BFP_EXT) |
| /* Type representing floating-point control modes. */ |
| typedef unsigned int femode_t; |
| |
| /* Default floating-point control modes. */ |
| # define FE_DFL_MODE ((const femode_t *) -1L) |
| #endif |
