isalnum.c
上传用户:nvosite88
上传日期:2007-01-17
资源大小:4983k
文件大小:1k
- /* isalnum.c - character classification */
- /* Copyright 1992-1993 Wind River Systems, Inc. */
- /*
- modification history
- --------------------
- 01e,03mar93,jdi more documentation cleanup for 5.1.
- 01d,07feb93,jdi documentation cleanup for 5.1.
- 01c,20sep92,smb documentation additions.
- 01b,04jul92,smb added vxWorks.h and extra documentation
- 01a,24mar92,smb written
- */
- /*
- DESCRIPTION
- INCLUDE FILE: ctype.h
- SEE ALSO: American National Standard X3.159-1989
- NOMANUAL
- */
- #include "vxWorks.h"
- #include "ctype.h"
- #undef isalnum
- /*******************************************************************************
- *
- * isalnum - test whether a character is alphanumeric (ANSI)
- *
- * This routine tests whether <c> is a character for which isalpha() or
- * isdigit() returns true.
- *
- * INCLUDE FILES: ctype.h
- *
- * RETURNS: Non-zero if and only if <c> is alphanumeric.
- */
- int isalnum
- (
- int c /* character to test */
- )
- {
- return __isalnum(c);
- }