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- Replaced ISO Latin 1 code #160 with a plain blank space (ASCII code #32) where necessary git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@15305 87f5fb63-7c3d-0410-a384-fd976d0f7a62
401 lines
7.9 KiB
C
401 lines
7.9 KiB
C
/*
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* $Id: stdlib_strtof.c,v 1.12 2006-09-25 14:51:15 obarthel Exp $
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*
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* :ts=4
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*
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* Portable ISO 'C' (1994) runtime library for the Amiga computer
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* Copyright (c) 2002-2015 by Olaf Barthel <obarthel (at) gmx.net>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Neither the name of Olaf Barthel nor the names of contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _STDLIB_NULL_POINTER_CHECK_H
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#include "stdlib_null_pointer_check.h"
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#endif /* _STDLIB_NULL_POINTER_CHECK_H */
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/****************************************************************************/
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#ifndef _STDLIB_HEADERS_H
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#include "stdlib_headers.h"
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#endif /* _STDLIB_HEADERS_H */
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#ifndef _LOCALE_HEADERS_H
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#include "locale_headers.h"
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#endif /* _LOCALE_HEADERS_H */
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/****************************************************************************/
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#ifndef _MATH_FP_SUPPORT_H
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#include "math_fp_support.h"
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#endif /* _MATH_FP_SUPPORT_H */
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/****************************************************************************/
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#if defined(FLOATING_POINT_SUPPORT)
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/****************************************************************************/
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#ifndef _MATH_HEADERS_H
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#include "math_headers.h"
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#endif /* _MATH_HEADERS_H */
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/****************************************************************************/
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float
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strtof(const char *str, char ** ptr)
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{
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const char * stop = str;
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float sum = 0.0;
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float result;
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int is_negative;
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char c;
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ENTER();
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SHOWSTRING(str);
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SHOWPOINTER(ptr);
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assert( str != NULL );
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#if defined(CHECK_FOR_NULL_POINTERS)
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{
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if(str == NULL)
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{
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SHOWMSG("invalid str parameter");
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__set_errno(EFAULT);
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result = __get_huge_valf();
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goto out;
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}
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}
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#endif /* CHECK_FOR_NULL_POINTERS */
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/* Skip all leading blanks. */
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while((c = (*str)) != '\0')
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{
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if(NOT isspace(c))
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break;
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str++;
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}
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/* The first character may be a sign. */
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if((*str) == '-')
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{
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/* It's a negative number. */
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is_negative = 1;
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str++;
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}
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else
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{
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/* It's not going to be negative. */
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is_negative = 0;
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/* But there may be a sign we will choose to
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ignore. */
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if((*str) == '+')
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str++;
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}
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/* We begin by checking for the "inf" and "nan" strings. */
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if(strcasecmp(str,"inf") == SAME || strcasecmp(str,"infinity") == SAME)
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{
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SHOWMSG("infinity");
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str += strlen(str);
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sum = __inff();
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stop = str;
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}
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