UNIX 7th Ed. - /usr/src/libc/gen/strncmp.c

   1: /*
   2:  * Compare strings (at most n bytes):  s1>s2: >0  s1==s2: 0  s1<s2: <0
   3:  */
   4: 
   5: strncmp(s1, s2, n)
   6: register char *s1, *s2;
   7: register n;
   8: {
   9: 
  10:     while (--n >= 0 && *s1 == *s2++)
  11:         if (*s1++ == '\0')
  12:             return(0);
  13:     return(n<0 ? 0 : *s1 - *--s2);
  14: }

Defined functions