cosmopolitan/third_party/f2c/fmtlib.c

34 lines
666 B
C

#define MAXINTLENGTH 23
#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];
}