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Code Releases Wiki Activity

- Added <fenv.h> for C99, and the (yet unimplemented) functions

Browse Source 
feclearexcept(), fegetenv(), fegetexceptflag(), fegetround(),
  feholdexcept(), feraiseexcept(), fesetenv(), fesetexceptflag(),
  fetestexcept(), fetestround() and feupdateenv().

- Replaced the old pow() implementation. However, powf() may need to
  be changed to set a domain error.


git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@15062 87f5fb63-7c3d-0410-a384-fd976d0f7a62
This commit is contained in:
Olaf Barthel
2005-11-19 17:11:22 +00:00
parent 2b50d1586c
commit 5578c6a39e
18 changed files with 806 additions and 78 deletions
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110
library/include/fenv.h Normal file
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/*
* $Id: fenv.h,v 1.1 2005-11-19 17:11:22 obarthel Exp $
*
* :ts=4
*
* Portable ISO 'C' (1994) runtime library for the Amiga computer
* Copyright (c) 2002-2005 by Olaf Barthel <olsen@sourcery.han.de>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Neither the name of Olaf Barthel nor the names of contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* 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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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
/****************************************************************************/
/* The following is not part of the ISO 'C' (1994) standard, but it should
be part of ISO/IEC 9899:1999, also known as "C99". */
/****************************************************************************/
#ifndef _STDDEF_H
#include <stddef.h>
#endif /* _STDDEF_H */
/****************************************************************************/
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/****************************************************************************/
typedef int fenv_t;
/****************************************************************************/
#define FE_DEFL_ENV ((fenv_t *)NULL))
/****************************************************************************/
extern int fegetenv(fenv_t * envp);
extern int fesetenv(fenv_t * envp);
extern int feholdexcept(fenv_t * envp);
extern int feupdateenv(const fenv_t * envp);
/****************************************************************************/
#define FE_DIVBYZERO (1<<0)
#define FE_INEXACT (1<<1)
#define FE_INVALID (1<<2)
#define FE_OVERFLOW (1<<3)
#define FE_UNDERFLOW (1<<4)
#define FE_ALL_EXCEPT (FE_DIVBYZERO|FE_INEXACT|FE_INVALID|FE_OVERFLOW|FE_UNDERFLOW)
/****************************************************************************/
typedef int fexcept_t;
/****************************************************************************/
extern int fegetexceptflag(fexcept_t *flagp,int excepts);
extern int fesetexceptflag(const fexcept_t *flagp,int excepts);
extern int fetestexcept(int excepts);
extern int feraiseexcept(int excepts);
extern int feclearexcept(int excepts);
/****************************************************************************/
#define FE_DOWNWARD 0
#define FE_UPWARD 1
#define FE_TONEAREST 2
#define FE_TOWARDZERO 3
/****************************************************************************/
extern int fegetround(void);
extern int fetestround(int rounds);
/****************************************************************************/
#ifdef __cplusplus
}
#endif /* __cplusplus */
/****************************************************************************/
#endif /* _FENV_H */