mirror of
git://source.winehq.org/git/wine.git
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934 lines
21 KiB
C
934 lines
21 KiB
C
/*
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* MSVCRT string functions
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*
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* Copyright 1996,1998 Marcus Meissner
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* Copyright 1996 Jukka Iivonen
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* Copyright 1997,2000 Uwe Bonnes
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* Copyright 2000 Jon Griffiths
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#define _ISOC99_SOURCE
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#include "config.h"
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#include "wine/port.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <math.h>
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#include <limits.h>
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#include <errno.h>
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#include "msvcrt.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
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/*********************************************************************
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* _mbsdup (MSVCRT.@)
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* _strdup (MSVCRT.@)
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*/
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char* CDECL _strdup(const char* str)
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{
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if(str)
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{
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char * ret = MSVCRT_malloc(strlen(str)+1);
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if (ret) strcpy( ret, str );
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return ret;
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}
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else return 0;
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}
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/*********************************************************************
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* _strlwr_s (MSVCRT.@)
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*/
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int CDECL _strlwr_s(char *str, MSVCRT_size_t len)
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{
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char *ptr = str;
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if (!str || !len)
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{
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*MSVCRT__errno() = MSVCRT_EINVAL;
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return MSVCRT_EINVAL;
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}
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while (len && *ptr)
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{
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len--;
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ptr++;
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}
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if (!len)
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{
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str[0] = '\0';
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*MSVCRT__errno() = MSVCRT_EINVAL;
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return MSVCRT_EINVAL;
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}
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while (*str)
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{
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*str = tolower(*str);
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str++;
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}
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return 0;
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}
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/*********************************************************************
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* _strnset (MSVCRT.@)
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*/
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char* CDECL MSVCRT__strnset(char* str, int value, MSVCRT_size_t len)
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{
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if (len > 0 && str)
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while (*str && len--)
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*str++ = value;
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return str;
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}
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/*********************************************************************
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* _strrev (MSVCRT.@)
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*/
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char* CDECL _strrev(char* str)
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{
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char * p1;
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char * p2;
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if (str && *str)
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for (p1 = str, p2 = str + strlen(str) - 1; p2 > p1; ++p1, --p2)
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{
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*p1 ^= *p2;
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*p2 ^= *p1;
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*p1 ^= *p2;
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}
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return str;
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}
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/*********************************************************************
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* _strset (MSVCRT.@)
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*/
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char* CDECL _strset(char* str, int value)
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{
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char *ptr = str;
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while (*ptr)
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*ptr++ = value;
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return str;
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}
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/*********************************************************************
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* strtok (MSVCRT.@)
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*/
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char * CDECL MSVCRT_strtok( char *str, const char *delim )
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{
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thread_data_t *data = msvcrt_get_thread_data();
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char *ret;
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if (!str)
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if (!(str = data->strtok_next)) return NULL;
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while (*str && strchr( delim, *str )) str++;
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if (!*str) return NULL;
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ret = str++;
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while (*str && !strchr( delim, *str )) str++;
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if (*str) *str++ = 0;
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data->strtok_next = str;
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return ret;
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}
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/*********************************************************************
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* strtok_s (MSVCRT.@)
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*/
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char * CDECL MSVCRT_strtok_s(char *str, const char *delim, char **ctx)
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{
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if(!delim || !ctx || (!str && !*ctx)) {
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MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
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*MSVCRT__errno() = MSVCRT_EINVAL;
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return NULL;
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}
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if(!str)
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str = *ctx;
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while(*str && strchr(delim, *str))
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str++;
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if(!*str)
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return NULL;
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*ctx = str+1;
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while(**ctx && !strchr(delim, **ctx))
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(*ctx)++;
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if(**ctx)
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*(*ctx)++ = 0;
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return str;
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}
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/*********************************************************************
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* _swab (MSVCRT.@)
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*/
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void CDECL MSVCRT__swab(char* src, char* dst, int len)
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{
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if (len > 1)
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{
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len = (unsigned)len >> 1;
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while (len--) {
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char s0 = src[0];
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char s1 = src[1];
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*dst++ = s1;
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*dst++ = s0;
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src = src + 2;
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}
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}
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}
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/*********************************************************************
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* strtod_l (MSVCRT.@)
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*/
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double CDECL MSVCRT_strtod_l( const char *str, char **end, MSVCRT__locale_t locale)
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{
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unsigned __int64 d=0, hlp;
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unsigned fpcontrol;
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int exp=0, sign=1;
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const char *p;
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double ret;
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BOOL found_digit = FALSE;
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if(!str) {
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MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
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*MSVCRT__errno() = MSVCRT_EINVAL;
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return 0;
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}
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if(!locale)
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locale = get_locale();
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/* FIXME: use *_l functions */
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p = str;
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while(isspace(*p))
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p++;
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if(*p == '-') {
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sign = -1;
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p++;
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} else if(*p == '+')
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p++;
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while(isdigit(*p)) {
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found_digit = TRUE;
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hlp = d*10+*(p++)-'0';
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if(d>MSVCRT_UI64_MAX/10 || hlp<d) {
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exp++;
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break;
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} else
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d = hlp;
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}
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while(isdigit(*p)) {
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exp++;
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p++;
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}
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if(*p == *locale->locinfo->lconv->decimal_point)
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p++;
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while(isdigit(*p)) {
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found_digit = TRUE;
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hlp = d*10+*(p++)-'0';
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if(d>MSVCRT_UI64_MAX/10 || hlp<d)
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break;
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d = hlp;
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exp--;
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}
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while(isdigit(*p))
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p++;
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if(!found_digit) {
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if(end)
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*end = (char*)str;
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return 0.0;
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}
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if(*p=='e' || *p=='E' || *p=='d' || *p=='D') {
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int e=0, s=1;
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p++;
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if(*p == '-') {
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s = -1;
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p++;
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} else if(*p == '+')
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p++;
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if(isdigit(*p)) {
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while(isdigit(*p)) {
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if(e>INT_MAX/10 || (e=e*10+*p-'0')<0)
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e = INT_MAX;
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p++;
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}
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e *= s;
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if(exp<0 && e<0 && exp+e>=0) exp = INT_MIN;
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else if(exp>0 && e>0 && exp+e<0) exp = INT_MAX;
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else exp += e;
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} else {
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if(*p=='-' || *p=='+')
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p--;
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p--;
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}
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}
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fpcontrol = _control87(0, 0);
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_control87(MSVCRT__EM_DENORMAL|MSVCRT__EM_INVALID|MSVCRT__EM_ZERODIVIDE
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|MSVCRT__EM_OVERFLOW|MSVCRT__EM_UNDERFLOW|MSVCRT__EM_INEXACT, 0xffffffff);
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if(exp>0)
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ret = (double)sign*d*pow(10, exp);
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else
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ret = (double)sign*d/pow(10, -exp);
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_control87(fpcontrol, 0xffffffff);
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if((d && ret==0.0) || isinf(ret))
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*MSVCRT__errno() = MSVCRT_ERANGE;
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if(end)
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*end = (char*)p;
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return ret;
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}
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/*********************************************************************
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* strtod (MSVCRT.@)
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*/
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double CDECL MSVCRT_strtod( const char *str, char **end )
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{
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return MSVCRT_strtod_l( str, end, NULL );
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}
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/*********************************************************************
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* atof (MSVCRT.@)
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*/
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double CDECL MSVCRT_atof( const char *str )
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{
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return MSVCRT_strtod_l(str, NULL, NULL);
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}
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/*********************************************************************
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* _atof_l (MSVCRT.@)
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*/
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double CDECL MSVCRT__atof_l( const char *str, MSVCRT__locale_t locale)
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{
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return MSVCRT_strtod_l(str, NULL, locale);
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}
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/*********************************************************************
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* strcoll (MSVCRT.@)
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*/
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int CDECL MSVCRT_strcoll( const char* str1, const char* str2 )
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{
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/* FIXME: handle Windows locale */
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return strcoll( str1, str2 );
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}
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/*********************************************************************
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* strcpy_s (MSVCRT.@)
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*/
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int CDECL MSVCRT_strcpy_s( char* dst, MSVCRT_size_t elem, const char* src )
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{
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MSVCRT_size_t i;
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if(!elem) return MSVCRT_EINVAL;
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if(!dst) return MSVCRT_EINVAL;
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if(!src)
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{
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dst[0] = '\0';
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return MSVCRT_EINVAL;
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}
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for(i = 0; i < elem; i++)
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{
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if((dst[i] = src[i]) == '\0') return 0;
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}
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dst[0] = '\0';
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return MSVCRT_ERANGE;
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}
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/*********************************************************************
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* strcat_s (MSVCRT.@)
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*/
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int CDECL MSVCRT_strcat_s( char* dst, MSVCRT_size_t elem, const char* src )
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{
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MSVCRT_size_t i, j;
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if(!dst) return MSVCRT_EINVAL;
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if(elem == 0) return MSVCRT_EINVAL;
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if(!src)
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{
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dst[0] = '\0';
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return MSVCRT_EINVAL;
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}
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for(i = 0; i < elem; i++)
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{
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if(dst[i] == '\0')
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{
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for(j = 0; (j + i) < elem; j++)
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{
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if((dst[j + i] = src[j]) == '\0') return 0;
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}
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}
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}
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/* Set the first element to 0, not the first element after the skipped part */
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dst[0] = '\0';
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return MSVCRT_ERANGE;
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}
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/*********************************************************************
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* strxfrm (MSVCRT.@)
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*/
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MSVCRT_size_t CDECL MSVCRT_strxfrm( char *dest, const char *src, MSVCRT_size_t len )
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{
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/* FIXME: handle Windows locale */
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return strxfrm( dest, src, len );
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}
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/*********************************************************************
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* _stricoll (MSVCRT.@)
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*/
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int CDECL MSVCRT__stricoll( const char* str1, const char* str2 )
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{
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/* FIXME: handle collates */
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TRACE("str1 %s str2 %s\n", debugstr_a(str1), debugstr_a(str2));
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return lstrcmpiA( str1, str2 );
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}
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/********************************************************************
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* _atoldbl (MSVCRT.@)
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*/
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int CDECL MSVCRT__atoldbl(MSVCRT__LDOUBLE *value, const char *str)
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{
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/* FIXME needs error checking for huge/small values */
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#ifdef HAVE_STRTOLD
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TRACE("str %s value %p\n",str,value);
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value->x = strtold(str,0);
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#else
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FIXME("stub, str %s value %p\n",str,value);
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#endif
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return 0;
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}
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/********************************************************************
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* __STRINGTOLD (MSVCRT.@)
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*/
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int CDECL __STRINGTOLD( MSVCRT__LDOUBLE *value, char **endptr, const char *str, int flags )
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{
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#ifdef HAVE_STRTOLD
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FIXME("%p %p %s %x partial stub\n", value, endptr, str, flags );
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value->x = strtold(str,endptr);
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#else
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FIXME("%p %p %s %x stub\n", value, endptr, str, flags );
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#endif
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return 0;
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}
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/******************************************************************
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* strtol (MSVCRT.@)
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*/
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MSVCRT_long CDECL MSVCRT_strtol(const char* nptr, char** end, int base)
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{
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/* wrapper to forward libc error code to msvcrt's error codes */
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long ret;
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errno = 0;
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ret = strtol(nptr, end, base);
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switch (errno)
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{
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case ERANGE: *MSVCRT__errno() = MSVCRT_ERANGE; break;
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case EINVAL: *MSVCRT__errno() = MSVCRT_EINVAL; break;
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default:
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/* cope with the fact that we may use 64bit long integers on libc
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* while msvcrt always uses 32bit long integers
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*/
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if (ret > MSVCRT_LONG_MAX)
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{
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ret = MSVCRT_LONG_MAX;
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*MSVCRT__errno() = MSVCRT_ERANGE;
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}
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else if (ret < -MSVCRT_LONG_MAX - 1)
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{
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ret = -MSVCRT_LONG_MAX - 1;
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*MSVCRT__errno() = MSVCRT_ERANGE;
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}
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break;
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}
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return ret;
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}
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|
|
|
/******************************************************************
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|
* strtoul (MSVCRT.@)
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*/
|
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MSVCRT_ulong CDECL MSVCRT_strtoul(const char* nptr, char** end, int base)
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{
|
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/* wrapper to forward libc error code to msvcrt's error codes */
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unsigned long ret;
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|
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errno = 0;
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ret = strtoul(nptr, end, base);
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switch (errno)
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{
|
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case ERANGE: *MSVCRT__errno() = MSVCRT_ERANGE; break;
|
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case EINVAL: *MSVCRT__errno() = MSVCRT_EINVAL; break;
|
|
default:
|
|
/* cope with the fact that we may use 64bit long integers on libc
|
|
* while msvcrt always uses 32bit long integers
|
|
*/
|
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if (ret > MSVCRT_ULONG_MAX)
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|
{
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ret = MSVCRT_ULONG_MAX;
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|
*MSVCRT__errno() = MSVCRT_ERANGE;
|
|
}
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break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/******************************************************************
|
|
* strnlen (MSVCRT.@)
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*/
|
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MSVCRT_size_t CDECL MSVCRT_strnlen(const char *s, MSVCRT_size_t maxlen)
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|
{
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|
MSVCRT_size_t i;
|
|
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for(i=0; i<maxlen; i++)
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if(!s[i]) break;
|
|
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return i;
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|
}
|
|
|
|
/*********************************************************************
|
|
* _strtoi64_l (MSVCRT.@)
|
|
*
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* FIXME: locale parameter is ignored
|
|
*/
|
|
__int64 CDECL MSVCRT_strtoi64_l(const char *nptr, char **endptr, int base, MSVCRT__locale_t locale)
|
|
{
|
|
BOOL negative = FALSE;
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|
__int64 ret = 0;
|
|
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|
TRACE("(%s %p %d %p)\n", nptr, endptr, base, locale);
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|
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if(!nptr || base<0 || base>36 || base==1) {
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MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
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return 0;
|
|
}
|
|
|
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while(isspace(*nptr)) nptr++;
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|
|
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if(*nptr == '-') {
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negative = TRUE;
|
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nptr++;
|
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} else if(*nptr == '+')
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nptr++;
|
|
|
|
if((base==0 || base==16) && *nptr=='0' && tolower(*(nptr+1))=='x') {
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base = 16;
|
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nptr += 2;
|
|
}
|
|
|
|
if(base == 0) {
|
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if(*nptr=='0')
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base = 8;
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else
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base = 10;
|
|
}
|
|
|
|
while(*nptr) {
|
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char cur = tolower(*nptr);
|
|
int v;
|
|
|
|
if(isdigit(cur)) {
|
|
if(cur >= '0'+base)
|
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break;
|
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v = cur-'0';
|
|
} else {
|
|
if(cur<'a' || cur>='a'+base-10)
|
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break;
|
|
v = cur-'a'+10;
|
|
}
|
|
|
|
if(negative)
|
|
v = -v;
|
|
|
|
nptr++;
|
|
|
|
if(!negative && (ret>MSVCRT_I64_MAX/base || ret*base>MSVCRT_I64_MAX-v)) {
|
|
ret = MSVCRT_I64_MAX;
|
|
*MSVCRT__errno() = MSVCRT_ERANGE;
|
|
} else if(negative && (ret<MSVCRT_I64_MIN/base || ret*base<MSVCRT_I64_MIN-v)) {
|
|
ret = MSVCRT_I64_MIN;
|
|
*MSVCRT__errno() = MSVCRT_ERANGE;
|
|
} else
|
|
ret = ret*base + v;
|
|
}
|
|
|
|
if(endptr)
|
|
*endptr = (char*)nptr;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* _strtoi64 (MSVCRT.@)
|
|
*/
|
|
__int64 CDECL MSVCRT_strtoi64(const char *nptr, char **endptr, int base)
|
|
{
|
|
return MSVCRT_strtoi64_l(nptr, endptr, base, NULL);
|
|
}
|
|
|
|
/*********************************************************************
|
|
* _strtoui64_l (MSVCRT.@)
|
|
*
|
|
* FIXME: locale parameter is ignored
|
|
*/
|
|
unsigned __int64 CDECL MSVCRT_strtoui64_l(const char *nptr, char **endptr, int base, MSVCRT__locale_t locale)
|
|
{
|
|
BOOL negative = FALSE;
|
|
unsigned __int64 ret = 0;
|
|
|
|
TRACE("(%s %p %d %p)\n", nptr, endptr, base, locale);
|
|
|
|
if(!nptr || base<0 || base>36 || base==1) {
|
|
MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
|
|
return 0;
|
|
}
|
|
|
|
while(isspace(*nptr)) nptr++;
|
|
|
|
if(*nptr == '-') {
|
|
negative = TRUE;
|
|
nptr++;
|
|
} else if(*nptr == '+')
|
|
nptr++;
|
|
|
|
if((base==0 || base==16) && *nptr=='0' && tolower(*(nptr+1))=='x') {
|
|
base = 16;
|
|
nptr += 2;
|
|
}
|
|
|
|
if(base == 0) {
|
|
if(*nptr=='0')
|
|
base = 8;
|
|
else
|
|
base = 10;
|
|
}
|
|
|
|
while(*nptr) {
|
|
char cur = tolower(*nptr);
|
|
int v;
|
|
|
|
if(isdigit(cur)) {
|
|
if(cur >= '0'+base)
|
|
break;
|
|
v = *nptr-'0';
|
|
} else {
|
|
if(cur<'a' || cur>='a'+base-10)
|
|
break;
|
|
v = cur-'a'+10;
|
|
}
|
|
|
|
nptr++;
|
|
|
|
if(ret>MSVCRT_UI64_MAX/base || ret*base>MSVCRT_UI64_MAX-v) {
|
|
ret = MSVCRT_UI64_MAX;
|
|
*MSVCRT__errno() = MSVCRT_ERANGE;
|
|
} else
|
|
ret = ret*base + v;
|
|
}
|
|
|
|
if(endptr)
|
|
*endptr = (char*)nptr;
|
|
|
|
return negative ? -ret : ret;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* _strtoui64 (MSVCRT.@)
|
|
*/
|
|
unsigned __int64 CDECL MSVCRT_strtoui64(const char *nptr, char **endptr, int base)
|
|
{
|
|
return MSVCRT_strtoui64_l(nptr, endptr, base, NULL);
|
|
}
|
|
|
|
/*********************************************************************
|
|
* _itoa_s (MSVCRT.@)
|
|
*/
|
|
int CDECL _itoa_s(int value, char *str, MSVCRT_size_t size, int radix)
|
|
{
|
|
unsigned int val, digit;
|
|
int is_negative;
|
|
char buffer[33], *pos;
|
|
size_t len;
|
|
|
|
if (!str || !size || radix < 2 || radix > 36)
|
|
{
|
|
if (str && size)
|
|
str[0] = '\0';
|
|
|
|
*MSVCRT__errno() = MSVCRT_EINVAL;
|
|
return MSVCRT_EINVAL;
|
|
}
|
|
|
|
if (value < 0 && radix == 10)
|
|
{
|
|
is_negative = 1;
|
|
val = -value;
|
|
}
|
|
else
|
|
{
|
|
is_negative = 0;
|
|
val = value;
|
|
}
|
|
|
|
pos = buffer + 32;
|
|
*pos = '\0';
|
|
|
|
do
|
|
{
|
|
digit = val % radix;
|
|
val /= radix;
|
|
|
|
if (digit < 10)
|
|
*--pos = '0' + digit;
|
|
else
|
|
*--pos = 'a' + digit - 10;
|
|
}
|
|
while (val != 0);
|
|
|
|
if (is_negative)
|
|
*--pos = '-';
|
|
|
|
len = buffer + 33 - pos;
|
|
if (len > size)
|
|
{
|
|
size_t i;
|
|
char *p = str;
|
|
|
|
/* Copy the temporary buffer backwards up to the available number of
|
|
* characters. Don't copy the negative sign if present. */
|
|
|
|
if (is_negative)
|
|
{
|
|
p++;
|
|
size--;
|
|
}
|
|
|
|
for (pos = buffer + 31, i = 0; i < size; i++)
|
|
*p++ = *pos--;
|
|
|
|
str[0] = '\0';
|
|
*MSVCRT__errno() = MSVCRT_ERANGE;
|
|
return MSVCRT_ERANGE;
|
|
}
|
|
|
|
memcpy(str, pos, len);
|
|
return 0;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* _ui64toa_s (MSVCRT.@)
|
|
*/
|
|
int CDECL MSVCRT__ui64toa_s(unsigned __int64 value, char *str,
|
|
MSVCRT_size_t size, int radix)
|
|
{
|
|
char buffer[65], *pos;
|
|
int digit;
|
|
|
|
if(!str || radix<2 || radix>36) {
|
|
MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
|
|
*MSVCRT__errno() = MSVCRT_EINVAL;
|
|
return MSVCRT_EINVAL;
|
|
}
|
|
|
|
pos = buffer+64;
|
|
*pos = '\0';
|
|
|
|
do {
|
|
digit = value%radix;
|
|
value /= radix;
|
|
|
|
if(digit < 10)
|
|
*--pos = '0'+digit;
|
|
else
|
|
*--pos = 'a'+digit-10;
|
|
}while(value != 0);
|
|
|
|
if(buffer-pos+65 > size) {
|
|
MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
|
|
*MSVCRT__errno() = MSVCRT_EINVAL;
|
|
return MSVCRT_EINVAL;
|
|
}
|
|
|
|
memcpy(str, pos, buffer-pos+65);
|
|
return 0;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* _ultoa_s (MSVCRT.@)
|
|
*/
|
|
int CDECL _ultoa_s(MSVCRT_ulong value, char *str, MSVCRT_size_t size, int radix)
|
|
{
|
|
MSVCRT_ulong digit;
|
|
char buffer[33], *pos;
|
|
size_t len;
|
|
|
|
if (!str || !size || radix < 2 || radix > 36)
|
|
{
|
|
if (str && size)
|
|
str[0] = '\0';
|
|
|
|
*MSVCRT__errno() = MSVCRT_EINVAL;
|
|
return MSVCRT_EINVAL;
|
|
}
|
|
|
|
pos = buffer + 32;
|
|
*pos = '\0';
|
|
|
|
do
|
|
{
|
|
digit = value % radix;
|
|
value /= radix;
|
|
|
|
if (digit < 10)
|
|
*--pos = '0' + digit;
|
|
else
|
|
*--pos = 'a' + digit - 10;
|
|
}
|
|
while (value != 0);
|
|
|
|
len = buffer + 33 - pos;
|
|
if (len > size)
|
|
{
|
|
size_t i;
|
|
char *p = str;
|
|
|
|
/* Copy the temporary buffer backwards up to the available number of
|
|
* characters. */
|
|
|
|
for (pos = buffer + 31, i = 0; i < size; i++)
|
|
*p++ = *pos--;
|
|
|
|
str[0] = '\0';
|
|
*MSVCRT__errno() = MSVCRT_ERANGE;
|
|
return MSVCRT_ERANGE;
|
|
}
|
|
|
|
memcpy(str, pos, len);
|
|
return 0;
|
|
}
|
|
|
|
#define I10_OUTPUT_MAX_PREC 21
|
|
/* Internal structure used by $I10_OUTPUT */
|
|
struct _I10_OUTPUT_DATA {
|
|
short pos;
|
|
char sign;
|
|
BYTE len;
|
|
char str[I10_OUTPUT_MAX_PREC+1]; /* add space for '\0' */
|
|
};
|
|
|
|
/*********************************************************************
|
|
* $I10_OUTPUT (MSVCRT.@)
|
|
* ld - long double to be printed to data
|
|
* prec - precision of part, we're interested in
|
|
* flag - 0 for first prec digits, 1 for fractional part
|
|
* data - data to be populated
|
|
*
|
|
* return value
|
|
* 0 if given double is NaN or INF
|
|
* 1 otherwise
|
|
*
|
|
* FIXME
|
|
* Native sets last byte of data->str to '0' or '9', I don't know what
|
|
* it means. Current implementation sets it always to '0'.
|
|
*/
|
|
int CDECL MSVCRT_I10_OUTPUT(MSVCRT__LDOUBLE ld, int prec, int flag, struct _I10_OUTPUT_DATA *data)
|
|
{
|
|
static const char inf_str[] = "1#INF";
|
|
static const char nan_str[] = "1#QNAN";
|
|
|
|
double d = ld.x;
|
|
char format[8];
|
|
char buf[I10_OUTPUT_MAX_PREC+9]; /* 9 = strlen("0.e+0000") + '\0' */
|
|
char *p;
|
|
|
|
TRACE("(%lf %d %x %p)\n", d, prec, flag, data);
|
|
|
|
if(d<0) {
|
|
data->sign = '-';
|
|
d = -d;
|
|
} else
|
|
data->sign = ' ';
|
|
|
|
if(isinf(d)) {
|
|
data->pos = 1;
|
|
data->len = 5;
|
|
memcpy(data->str, inf_str, sizeof(inf_str));
|
|
|
|
return 0;
|
|
}
|
|
|
|
if(isnan(d)) {
|
|
data->pos = 1;
|
|
data->len = 6;
|
|
memcpy(data->str, nan_str, sizeof(nan_str));
|
|
|
|
return 0;
|
|
}
|
|
|
|
if(flag&1) {
|
|
int exp = 1+floor(log10(d));
|
|
|
|
prec += exp;
|
|
if(exp < 0)
|
|
prec--;
|
|
}
|
|
prec--;
|
|
|
|
if(prec+1 > I10_OUTPUT_MAX_PREC)
|
|
prec = I10_OUTPUT_MAX_PREC-1;
|
|
else if(prec < 0) {
|
|
d = 0.0;
|
|
prec = 0;
|
|
}
|
|
|
|
sprintf(format, "%%.%dle", prec);
|
|
sprintf(buf, format, d);
|
|
|
|
buf[1] = buf[0];
|
|
data->pos = atoi(buf+prec+3);
|
|
if(buf[1] != '0')
|
|
data->pos++;
|
|
|
|
for(p = buf+prec+1; p>buf+1 && *p=='0'; p--);
|
|
data->len = p-buf;
|
|
|
|
memcpy(data->str, buf+1, data->len);
|
|
data->str[data->len] = '\0';
|
|
|
|
if(buf[1]!='0' && prec-data->len+1>0)
|
|
memcpy(data->str+data->len+1, buf+data->len+1, prec-data->len+1);
|
|
|
|
return 1;
|
|
}
|
|
#undef I10_OUTPUT_MAX_PREC
|