lib/other/itoa.c

   1 #include <lib.h>
   2 /* Integer to ASCII for signed decimal integers. */
   3
   4 PRIVATE int next;
   5 PRIVATE char qbuf[8];
   6
   7 _PROTOTYPE( char *itoa, (int n));
   8
   9 char *itoa(n)
  10 int n;
  11 {
  12   register int r, k;
  13   int flag = 0;
  14
  15   next = 0;
  16   if (n < 0) {
  17         qbuf[next++] = '-';
  18         n = -n;
  19   }
  20   if (n == 0) {
  21         qbuf[next++] = '0';
  22   } else {
  23         k = 10000;
  24         while (k > 0) {
  25                 r = n / k;
  26                 if (flag || r > 0) {
  27                         qbuf[next++] = '0' + r;
  28                         flag = 1;
  29                 }
  30                 n -= r * k;
  31                 k = k / 10;
  32         }
  33   }
  34   qbuf[next] = 0;
  35   return(qbuf);
  36 }