1 #include <string.h>
2 
memcmp(const void * cs,const void * ct,size_t count)3 int memcmp(const void *cs, const void *ct, size_t count)
4 {
5  const unsigned char *su1, *su2;
6  int res = 0;
7 
8  for (su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--)
9   if ((res = *su1 - *su2) != 0)
10    break;
11  return res;
12 }
13