fmt_ulong.c

   1 #include "fmt.h"
   2
   3 unsigned int fmt_ulong(register char *s,register unsigned long u)
   4 {
   5   register unsigned int len; register unsigned long q;
   6   len = 1; q = u;
   7   while (q > 9) { ++len; q /= 10; }
   8   if (s) {
   9     s += len;
  10     do { *--s = '0' + (u % 10); u /= 10; } while(u); /* handles u == 0 */
  11   }
  12   return len;
  13 }