27 lines
537 B
C
27 lines
537 B
C
|
/*
|
||
|
|
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
|
||
|
|
* See the copyright notice in the ACK home directory, in the file "Copyright".
|
||
|
|
*/
|
||
|
|
/* $Id$ */
|
||
|
|
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
int
|
||
|
|
strncmp(register const char *s1, register const char *s2, register size_t n)
|
||
|
|
{
|
||
|
|
if (n) {
|
||
|
|
do {
|
||
|
|
if (*s1 != *s2++)
|
||
|
|
break;
|
||
|
|
if (*s1++ == '\0')
|
||
|
|
return 0;
|
||
|
|
} while (--n > 0);
|
||
|
|
if (n > 0) {
|
||
|
|
if (*s1 == '\0') return -1;
|
||
|
|
if (*--s2 == '\0') return 1;
|
||
|
|
return (unsigned char) *s1 - (unsigned char) *s2;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|