89 lines
2.8 KiB
C
89 lines
2.8 KiB
C
|
/* Copyright (c) 2011 Tensilica Inc. ALL RIGHTS RESERVED.
|
||
|
|
|
||
|
|
Redistribution and use in source and binary forms, with or without
|
||
|
|
modification, are permitted provided that the following conditions
|
||
|
|
are met:
|
||
|
|
|
||
|
|
1. Redistributions of source code must retain the above copyright
|
||
|
|
notice, this list of conditions and the following disclaimer.
|
||
|
|
|
||
|
|
2. Redistributions in binary form must reproduce the above
|
||
|
|
copyright notice, this list of conditions and the following
|
||
|
|
disclaimer in the documentation and/or other materials provided
|
||
|
|
with the distribution.
|
||
|
|
|
||
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||
|
|
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||
|
|
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||
|
|
FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
||
|
|
TENSILICA INCORPORATED BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||
|
|
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||
|
|
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||
|
|
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||
|
|
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||
|
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||
|
|
OF THE POSSIBILITY OF SUCH DAMAGE. */
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef _FENV_H
|
||
|
|
#define _FENV_H
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
typedef unsigned long fenv_t;
|
||
|
|
typedef unsigned long fexcept_t;
|
||
|
|
|
||
|
|
#define FE_DIVBYZERO 0x08
|
||
|
|
#define FE_INEXACT 0x01
|
||
|
|
#define FE_INVALID 0x10
|
||
|
|
#define FE_OVERFLOW 0x04
|
||
|
|
#define FE_UNDERFLOW 0x02
|
||
|
|
|
||
|
|
#define FE_ALL_EXCEPT \
|
||
|
|
(FE_DIVBYZERO | \
|
||
|
|
FE_INEXACT | \
|
||
|
|
FE_INVALID | \
|
||
|
|
FE_OVERFLOW | \
|
||
|
|
FE_UNDERFLOW)
|
||
|
|
|
||
|
|
#define FE_DOWNWARD 0x3
|
||
|
|
#define FE_TONEAREST 0x0
|
||
|
|
#define FE_TOWARDZERO 0x1
|
||
|
|
#define FE_UPWARD 0x2
|
||
|
|
|
||
|
|
#define FE_DFL_ENV ((const fenv_t *) 0)
|
||
|
|
|
||
|
|
int feclearexcept(int);
|
||
|
|
int fegetexceptflag(fexcept_t *, int);
|
||
|
|
int feraiseexcept(int);
|
||
|
|
int fesetexceptflag(const fexcept_t *, int);
|
||
|
|
int fetestexcept(int);
|
||
|
|
int fegetround(void);
|
||
|
|
int fesetround(int);
|
||
|
|
int fegetenv(fenv_t *);
|
||
|
|
int feholdexcept(fenv_t *);
|
||
|
|
int fesetenv(const fenv_t *);
|
||
|
|
int feupdateenv(const fenv_t *);
|
||
|
|
|
||
|
|
/* glibc extensions */
|
||
|
|
int feenableexcept(int excepts);
|
||
|
|
int fedisableexcept(int excepts);
|
||
|
|
int fegetexcept(void);
|
||
|
|
|
||
|
|
#define _FE_EXCEPTION_FLAGS_OFFSET 7
|
||
|
|
#define _FE_EXCEPTION_FLAG_MASK (FE_ALL_EXCEPT << _FE_EXCEPTION_FLAGS_OFFSET)
|
||
|
|
#define _FE_EXCEPTION_ENABLE_OFFSET 2
|
||
|
|
#define _FE_EXCEPTION_ENABLE_MASK (FE_ALL_EXCEPT << _FE_EXCEPTION_ENABLE_OFFSET)
|
||
|
|
#define _FE_ROUND_MODE_OFFSET 0
|
||
|
|
#define _FE_ROUND_MODE_MASK (0x3 << _FE_ROUND_MODE_OFFSET)
|
||
|
|
#define _FE_FLOATING_ENV_MASK (_FE_EXCEPTION_FLAG_MASK | _FE_EXCEPTION_ENABLE_MASK | _FE_ROUND_MODE_MASK)
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|