#include "fmt.h"

unsigned int fmt_ulong(s,u) register char *s; register unsigned long u;
{
 register unsigned int len; register unsigned long q;
 len = 1; q = u;
 while (q > 9) { ++len; q /= 10; }
 if (s)
  {
   s += len;
   do { *--s = '0' + (u % 10); u /= 10; } while(u); /* handles u == 0 */
  }
 return len;
}