isspace.c

VXWORKS源代码

/* isspace.c - character classification and conversion macros */

/* 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 isspace
/*******************************************************************************
*
* isspace - test whether a character is a white-space character (ANSI)
*
* This routine tests whether a character is one of
* the standard white-space characters, as follows:
* 
* .TS
* tab(|);
* l l.
*         space           | "\0"
*         horizontal tab  | \et
*         vertical tab    | \ev
*         carriage return | \er
*         new-line        | \en
*         form-feed       | \ef
* .TE
*
* INCLUDE FILES: ctype.h
*
* RETURNS: Non-zero if and only if <c> is a space, tab, carriage return,
* new-line, or form-feed character.
*/

int isspace 
    (
    int c       /* character to test */
    )
    {
    return __isspace(c);
    }