| /* Copyright (C) 1999-2014 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 |
| |
| |
| /* Define bits representing the exception. We use the bit positions of |
| the appropriate bits in the FPSR... (Tahoe EAS 2.4 5-4)*/ |
| |
| enum |
| { |
| FE_INEXACT = |
| #define FE_INEXACT (1 << 5) |
| FE_INEXACT, |
| |
| FE_UNDERFLOW = |
| #define FE_UNDERFLOW (1 << 4) |
| FE_UNDERFLOW, |
| |
| FE_OVERFLOW = |
| #define FE_OVERFLOW (1 << 3) |
| FE_OVERFLOW, |
| |
| FE_DIVBYZERO = |
| #define FE_DIVBYZERO (1 << 2) |
| FE_DIVBYZERO, |
| |
| FE_UNNORMAL = |
| #define FE_UNNORMAL (1 << 1) |
| FE_UNNORMAL, |
| |
| FE_INVALID = |
| #define FE_INVALID (1 << 0) |
| FE_INVALID, |
| |
| FE_ALL_EXCEPT = |
| #define FE_ALL_EXCEPT (FE_INEXACT | FE_UNDERFLOW | FE_OVERFLOW | FE_DIVBYZERO | FE_UNNORMAL | FE_INVALID) |
| FE_ALL_EXCEPT |
| }; |
| |
| |
| enum |
| { |
| FE_TOWARDZERO = |
| #define FE_TOWARDZERO 3 |
| FE_TOWARDZERO, |
| |
| FE_UPWARD = |
| #define FE_UPWARD 2 |
| FE_UPWARD, |
| |
| FE_DOWNWARD = |
| #define FE_DOWNWARD 1 |
| FE_DOWNWARD, |
| |
| FE_TONEAREST = |
| #define FE_TONEAREST 0 |
| FE_TONEAREST, |
| }; |
| |
| |
| /* Type representing exception flags. */ |
| typedef unsigned long int fexcept_t; |
| |
| /* Type representing floating-point environment. */ |
| typedef unsigned long int fenv_t; |
| |
| /* If the default argument is used we use this value. */ |
| #define FE_DFL_ENV ((const fenv_t *) 0xc009804c0270033fUL) |
| |
| #ifdef __USE_GNU |
| /* Floating-point environment where only FE_UNNORMAL is masked since this |
| exception is not generally supported by glibc. */ |
| # define FE_NOMASK_ENV ((const fenv_t *) 0xc009804c02700302UL) |
| |
| /* Floating-point environment with (processor-dependent) non-IEEE |
| floating point. In this case, turning on flush-to-zero mode for |
| s0, s2, and s3. */ |
| # define FE_NONIEEE_ENV ((const fenv_t *) 0xc009a04d0270037fUL) |
| #endif |
