minix/lib/nbsd_libc/gen/isascii.3

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.\" $NetBSD: isascii.3,v 1.18 2010/04/30 04:46:18 jruoho Exp $
.\"
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.\" @(#)isascii.3 5.1 (Berkeley) 5/2/91
.\"
.Dd April 30, 2010
.Dt ISASCII 3
.Os
.Sh NAME
.Nm isascii
.Nd test for ASCII character
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In ctype.h
.Ft int
.Fn isascii "int c"
.Sh DESCRIPTION
The
.Fn isascii
function tests for an
.Tn ASCII
character, which is any character with a value in the
range from 0 to 127, inclusive.
.Pp
The
.Fn isascii
is defined on all integer values.
.Sh SEE ALSO
.Xr ctype 3 ,
.Xr isalnum 3 ,
.Xr isalpha 3 ,
.Xr isblank 3 ,
.Xr iscntrl 3 ,
.Xr isdigit 3 ,
.Xr isgraph 3 ,
.Xr islower 3 ,
.Xr isprint 3 ,
.Xr ispunct 3 ,
.Xr isspace 3 ,
.Xr isupper 3 ,
.Xr isxdigit 3 ,
.Xr stdio 3 ,
.Xr toascii 3 ,
.Xr tolower 3 ,
.Xr toupper 3 ,
.Xr ascii 7
.Sh STANDARDS
The
.Fn isascii
function conforms to
.St -xpg4
and
.St -p1003.1-2001 .
The
.St -p1003.1-2008
revision however marked it as obsolete, noting that
.Fn isascii
cannot be used portably in a localized application.