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- /* Copyright (C) 1999, 2000 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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
- #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 = 1UL << 5,
- #define FE_INEXACT FE_INEXACT
- FE_UNDERFLOW = 1UL << 4,
- #define FE_UNDERFLOW FE_UNDERFLOW
- FE_OVERFLOW = 1UL << 3,
- #define FE_OVERFLOW FE_OVERFLOW
- FE_DIVBYZERO = 1UL << 2,
- #define FE_DIVBYZERO FE_DIVBYZERO
- FE_UNNORMAL = 1UL << 1,
- #define FE_UNNORMAL FE_UNNORMAL
- FE_INVALID = 1UL << 0,
- #define FE_INVALID FE_INVALID
- FE_ALL_EXCEPT =
- (FE_INEXACT | FE_UNDERFLOW | FE_OVERFLOW | FE_DIVBYZERO | FE_UNNORMAL | FE_INVALID)
- #define FE_ALL_EXCEPT FE_ALL_EXCEPT
- };
- enum
- {
- FE_TOWARDZERO = 3,
- #define FE_TOWARDZERO FE_TOWARDZERO
- FE_UPWARD = 2,
- #define FE_UPWARD FE_UPWARD
- FE_DOWNWARD = 1,
- #define FE_DOWNWARD FE_DOWNWARD
- FE_TONEAREST = 0,
- #define FE_TONEAREST 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
|
