strcmp.c
上传用户:nvosite88
上传日期:2007-01-17
资源大小:4983k
文件大小:1k
- /* strcmp.c - compare two strings, string */
- /* Copyright 1992-1993 Wind River Systems, Inc. */
- /*
- modification history
- --------------------
- 01c,25feb93,jdi documentation cleanup for 5.1.
- 01b,20sep92,smb documentation additions
- 01a,08jul92,smb written and documented.
- */
- /*
- DESCRIPTION
- INCLUDE FILES: string.h
- SEE ALSO: American National Standard X3.159-1989
- NOMANUAL
- */
- #include "vxWorks.h"
- #include "string.h"
- /*******************************************************************************
- *
- * strcmp - compare two strings lexicographically (ANSI)
- *
- * This routine compares string <s1> to string <s2> lexicographically.
- *
- * INCLUDE FILES: string.h
- *
- * RETURNS: An integer greater than, equal to, or less than 0,
- * according to whether <s1> is lexicographically
- * greater than, equal to, or less than <s2>, respectively.
- */
- int strcmp
- (
- const char * s1, /* string to compare */
- const char * s2 /* string to compare <s1> to */
- )
- {
- while (*s1++ == *s2++)
- if (s1 [-1] == EOS)
- return (0);
- return ((s1 [-1]) - (s2 [-1]));
- }