1 #ifndef lint 2 static char sccsid[] = "@(#)strncmp.c 5.1 (Berkeley) 06/05/85"; 3 #endif not lint 4 5 /* 6 * Compare strings (at most n bytes): s1>s2: >0 s1==s2: 0 s1<s2: <0 7 */ 8 9 strncmp(s1, s2, n) 10 register char *s1, *s2; 11 register n; 12 { 13 14 while (--n >= 0 && *s1 == *s2++) 15 if (*s1++ == '\0') 16 return(0); 17 return(n<0 ? 0 : *s1 - *--s2); 18 } 19