freebsd-dev/contrib/libf2c/libI77/fmtlib.c
2003-07-11 03:42:19 +00:00

47 lines
779 B
C

/* @(#)fmtlib.c 1.2 */
#define MAXINTLENGTH 23
#include "config.h"
#include "f2c.h"
#ifndef Allow_TYQUAD
#undef longint
#define longint long
#undef ulongint
#define ulongint unsigned long
#endif
char *
f__icvt (longint value, int *ndigit, int *sign, int base)
{
static char buf[MAXINTLENGTH + 1];
register int i;
ulongint uvalue;
if (value > 0)
{
uvalue = value;
*sign = 0;
}
else if (value < 0)
{
uvalue = -value;
*sign = 1;
}
else
{
*sign = 0;
*ndigit = 1;
buf[MAXINTLENGTH - 1] = '0';
return &buf[MAXINTLENGTH - 1];
}
i = MAXINTLENGTH;
do
{
buf[--i] = (uvalue % base) + '0';
uvalue /= base;
}
while (uvalue > 0);
*ndigit = MAXINTLENGTH - i;
return &buf[i];
}