minix/lib/libc/ansi/strncmp.c

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2005-04-21 16:53:53 +02:00
/*
* (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;
}