strncmp.c

来自「mips架构的bootloader,99左右的版本 但源代码现在没人更新了」· C语言 代码 · 共 27 行

/*************************************************************
 * File: lib/strncmp.c
 * Purpose: Part of C runtime library
 * Author: Phil Bunce ([e-mail])
 * Revision History:
 *	970304	Start of revision history
 */

#include "string.h"

/** int strncmp(s1,s2,n) as strcmp, but compares at most n characters */
int strncmp(s1,s2,n)
char *s1,*s2;
int n;
{

if (!s1 || !s2) return(0);

for (;*s1 && n>0;s1++,s2++,n--) {
	if (*s1 < *s2) return(-1);
	if (*s1 > *s2) return(1);
	}
if (*s2) return(-1);
return(0);
}