mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-28 13:31:13 +00:00
97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
/* 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
|