mirror of
https://github.com/adtools/clib2.git
synced 2025-12-08 14:59:05 +00:00
9e32991a6d
number rather than a decimal one. Now how odd is that? - strtod() and strtof() now support "inf"/"infinity"/"nan"/"nan(..)" and hexadecimal floating point numbers, for C99. - Added the fpclassify(), isfinite(), isnormal() and signbit() macros for C99. - Reimplemented isnan() and isinf() as macros for C99. The corresponding functions will be dropped from the library. Note that the isinf() macro does not return -1, 0 or 1 like the old function did, but only 0 or 1 depending upon whether the parameter represents +/- infinity or not. - Added fabsf() for C99. git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14935 87f5fb63-7c3d-0410-a384-fd976d0f7a62
63 lines
2.2 KiB
C
63 lines
2.2 KiB
C
/*
|
|
* $Id: math_nanf.c,v 1.1 2005-05-08 08:51:29 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 _STDIO_HEADERS_H
|
|
#include "stdio_headers.h"
|
|
#endif /* _STDIO_HEADERS_H */
|
|
|
|
/****************************************************************************/
|
|
|
|
#if defined (FLOATING_POINT_SUPPORT)
|
|
|
|
/****************************************************************************/
|
|
|
|
/* 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". */
|
|
|
|
/****************************************************************************/
|
|
|
|
float
|
|
nanf(const char * UNUSED tagp)
|
|
{
|
|
union ieee_single x;
|
|
|
|
/* Exponent = 255 and fraction != 0.0 */
|
|
x.raw[0] = 0x7f800001;
|
|
|
|
return(x.value);
|
|
}
|
|
|
|
/****************************************************************************/
|
|
|
|
#endif /* FLOATING_POINT_SUPPORT */
|