1*61137Sbostic.\" Copyright (c) 1991, 1993 2*61137Sbostic.\" The Regents of the University of California. All rights reserved. 351388Sbostic.\" 451388Sbostic.\" %sccs.include.redist.man% 551388Sbostic.\" 6*61137Sbostic.\" @(#)isblank.3 8.1 (Berkeley) 06/04/93 751388Sbostic.\" 851388Sbostic.Dd 951388Sbostic.Dt ISBLANK 3 1051388Sbostic.Os 1151388Sbostic.Sh NAME 1251388Sbostic.Nm isblank 1351388Sbostic.Nd space or tab character test 1451388Sbostic.Sh SYNOPSIS 1551388Sbostic.Fd #include <ctype.h> 1651388Sbostic.Ft int 1751388Sbostic.Fn isblank "int c"; 1851388Sbostic.Sh DESCRIPTION 1951388SbosticThe 2051388Sbostic.Fn isblank 2151388Sbosticfunction tests for a space or tab character. 2251388Sbostic.Sh RETURN VALUES 2351388SbosticThe 2451388Sbostic.Fn isblank 2551388Sbosticfunction returns zero if the character tests false and 2651388Sbosticreturns non-zero if the character tests true. 2751388Sbostic.Sh SEE ALSO 2851388Sbostic.Xr ctype 3 , 2951388Sbostic.Xr ascii 7 30