vxworks操作系统的源代码 供研究学习

				/* strlen.c - file for 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"												/*******************************************************************************				*				* strlen - determine the length of a string (ANSI)				*				* This routine returns the number of characters in , not including EOS.				*				* INCLUDE FILES: string.h				*				* RETURNS: The number of non-null characters in the string.				*/								size_t strlen				    (				    const char * s        /* string */				    )				    {				    const char *save = s + 1;								    while (*s++ != EOS)					;								    return (s - save);				    }