mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-21 11:13:30 +00:00
8f7c2af436
add locale support for hexadecimal floating point conversions. Noticed by: ache Reviewed by: mike (mentor)
102 lines
2.4 KiB
C
102 lines
2.4 KiB
C
/****************************************************************
|
|
|
|
The author of this software is David M. Gay.
|
|
|
|
Copyright (C) 1998 by Lucent Technologies
|
|
All Rights Reserved
|
|
|
|
Permission to use, copy, modify, and distribute this software and
|
|
its documentation for any purpose and without fee is hereby
|
|
granted, provided that the above copyright notice appear in all
|
|
copies and that both that the copyright notice and this
|
|
permission notice and warranty disclaimer appear in supporting
|
|
documentation, and that the name of Lucent or any of its entities
|
|
not be used in advertising or publicity pertaining to
|
|
distribution of the software without specific, written prior
|
|
permission.
|
|
|
|
LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
|
|
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
|
|
IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
|
|
SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
|
|
IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
|
|
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
|
|
THIS SOFTWARE.
|
|
|
|
****************************************************************/
|
|
|
|
/* Please send bug reports to
|
|
David M. Gay
|
|
dmg@acm.org
|
|
*/
|
|
|
|
#include "gdtoaimp.h"
|
|
|
|
#ifdef USE_LOCALE
|
|
#include "locale.h"
|
|
#endif
|
|
|
|
char *
|
|
#ifdef KR_headers
|
|
g__fmt(b, s, se, decpt, sign) char *b; char *s; char *se; int decpt; ULong sign;
|
|
#else
|
|
g__fmt(char *b, char *s, char *se, int decpt, ULong sign)
|
|
#endif
|
|
{
|
|
int i, j, k;
|
|
char *s0 = s;
|
|
#ifdef USE_LOCALE
|
|
char decimalpoint = *localeconv()->decimal_point;
|
|
#else
|
|
#define decimalpoint '.'
|
|
#endif
|
|
if (sign)
|
|
*b++ = '-';
|
|
if (decpt <= -4 || decpt > se - s + 5) {
|
|
*b++ = *s++;
|
|
if (*s) {
|
|
*b++ = decimalpoint;
|
|
while((*b = *s++) !=0)
|
|
b++;
|
|
}
|
|
*b++ = 'e';
|
|
/* sprintf(b, "%+.2d", decpt - 1); */
|
|
if (--decpt < 0) {
|
|
*b++ = '-';
|
|
decpt = -decpt;
|
|
}
|
|
else
|
|
*b++ = '+';
|
|
for(j = 2, k = 10; 10*k <= decpt; j++, k *= 10){}
|
|
for(;;) {
|
|
i = decpt / k;
|
|
*b++ = i + '0';
|
|
if (--j <= 0)
|
|
break;
|
|
decpt -= i*k;
|
|
decpt *= 10;
|
|
}
|
|
*b = 0;
|
|
}
|
|
else if (decpt <= 0) {
|
|
*b++ = decimalpoint;
|
|
for(; decpt < 0; decpt++)
|
|
*b++ = '0';
|
|
while((*b = *s++) !=0)
|
|
b++;
|
|
}
|
|
else {
|
|
while((*b = *s++) !=0) {
|
|
b++;
|
|
if (--decpt == 0 && *s)
|
|
*b++ = decimalpoint;
|
|
}
|
|
for(; decpt > 0; decpt--)
|
|
*b++ = '0';
|
|
*b = 0;
|
|
}
|
|
freedtoa(s0);
|
|
return b;
|
|
}
|