sys/src/libc/port/memcmp.c

   1 #include        <u.h>
   2 #include        <libc.h>
   3
   4 int
   5 memcmp(void *a1, void *a2, usize n)
   6 {
   7         uchar *s1, *s2;
   8         uint c1, c2;
   9
  10         s1 = a1;
  11         s2 = a2;
  12         while(n > 0) {
  13                 c1 = *s1++;
  14                 c2 = *s2++;
  15                 if(c1 != c2) {
  16                         if(c1 > c2)
  17                                 return 1;
  18                         return -1;
  19                 }
  20                 n--;
  21         }
  22         return 0;
  23 }