minix/lib/libminlib/itoa.c

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