f14fb60209
* Updating common/lib * Updating lib/csu * Updating lib/libc * Updating libexec/ld.elf_so * Corrected test on __minix in featuretest to actually follow the meaning of the comment. * Cleaned up _REENTRANT-related defintions. * Disabled -D_REENTRANT for libfetch * Removing some unneeded __NBSD_LIBC defines and tests Change-Id: Ic1394baef74d11b9f86b312f5ff4bbc3cbf72ce2
148 lines
3.3 KiB
C
148 lines
3.3 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 at acm dot org,
|
|
* with " at " changed at "@" and " dot " changed to "."). */
|
|
|
|
#include "gdtoaimp.h"
|
|
|
|
#ifdef USE_LOCALE
|
|
#include "locale.h"
|
|
#endif
|
|
|
|
char *
|
|
#ifdef KR_headers
|
|
g__fmt(b, s, se, decpt, sign, blen) char *b; char *s; char *se; int decpt; ULong sign; size_t blen;
|
|
#else
|
|
g__fmt(char *b, char *s, char *se, int decpt, ULong sign, size_t blen)
|
|
#endif
|
|
{
|
|
int i, j, k;
|
|
char *be, *s0;
|
|
size_t len;
|
|
#ifdef USE_LOCALE
|
|
#ifdef NO_LOCALE_CACHE
|
|
char *decimalpoint = localeconv()->decimal_point;
|
|
size_t dlen = strlen(decimalpoint);
|
|
#else
|
|
char *decimalpoint;
|
|
static char *decimalpoint_cache;
|
|
static size_t dlen;
|
|
if (!(s0 = decimalpoint_cache)) {
|
|
s0 = localeconv()->decimal_point;
|
|
dlen = strlen(s0);
|
|
if ((decimalpoint_cache = MALLOC(strlen(s0) + 1)) != NULL) {
|
|
strcpy(decimalpoint_cache, s0);
|
|
s0 = decimalpoint_cache;
|
|
}
|
|
}
|
|
decimalpoint = s0;
|
|
#endif
|
|
#else
|
|
#define dlen 0
|
|
#endif
|
|
s0 = s;
|
|
len = (se-s) + dlen + 6; /* 6 = sign + e+dd + trailing null */
|
|
if (blen < len)
|
|
goto ret0;
|
|
be = b + blen - 1;
|
|
if (sign)
|
|
*b++ = '-';
|
|
if (decpt <= -4 || decpt > se - s + 5) {
|
|
*b++ = *s++;
|
|
if (*s) {
|
|
#ifdef USE_LOCALE
|
|
while((*b = *decimalpoint++))
|
|
++b;
|
|
#else
|
|
*b++ = '.';
|
|
#endif
|
|
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;
|
|
if (b >= be)
|
|
goto ret0;
|
|
*b++ = i + '0';
|
|
if (--j <= 0)
|
|
break;
|
|
decpt -= i*k;
|
|
decpt *= 10;
|
|
}
|
|
*b = 0;
|
|
}
|
|
else if (decpt <= 0) {
|
|
#ifdef USE_LOCALE
|
|
while((*b = *decimalpoint++))
|
|
++b;
|
|
#else
|
|
*b++ = '.';
|
|
#endif
|
|
if (be < b - decpt + (se - s))
|
|
goto ret0;
|
|
for(; decpt < 0; decpt++)
|
|
*b++ = '0';
|
|
while((*b = *s++) != 0)
|
|
b++;
|
|
}
|
|
else {
|
|
while((*b = *s++) != 0) {
|
|
b++;
|
|
if (--decpt == 0 && *s) {
|
|
#ifdef USE_LOCALE
|
|
while(*b = *decimalpoint++)
|
|
++b;
|
|
#else
|
|
*b++ = '.';
|
|
#endif
|
|
}
|
|
}
|
|
if (b + decpt > be) {
|
|
ret0:
|
|
b = 0;
|
|
goto ret;
|
|
}
|
|
for(; decpt > 0; decpt--)
|
|
*b++ = '0';
|
|
*b = 0;
|
|
}
|
|
ret:
|
|
freedtoa(s0);
|
|
return b;
|
|
}
|