.\" Copyright (c) 1991 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" %sccs.include.redist.man%
.\"
.\"     @(#)isblank.3	5.1 (Berkeley) 10/23/91
.\"
.Dd 
.Dt ISBLANK 3
.Os
.Sh NAME
.Nm isblank
.Nd space or tab character test
.Sh SYNOPSIS
.Fd #include <ctype.h>
.Ft int
.Fn isblank "int c";
.Sh DESCRIPTION
The
.Fn isblank
function tests for a space or tab character.
.Sh RETURN VALUES
The
.Fn isblank
function returns zero if the character tests false and
returns non-zero if the character tests true.
.Sh SEE ALSO
.Xr ctype 3 ,
.Xr ascii 7