.\"	$NetBSD: toascii.3,v 1.13 2010/04/30 04:46:18 jruoho Exp $
.\"
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.\"	@(#)toascii.3	8.1 (Berkeley) 6/4/93
.\"
.Dd April 30, 2010
.Dt TOASCII 3
.Os
.Sh NAME
.Nm toascii
.Nd convert a byte to 7-bit ASCII
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In ctype.h
.Ft int
.Fn toascii "int c"
.Sh DESCRIPTION
The
.Fn toascii
function returns the argument with all but the lower 7 bits cleared.
.Sh RETURN VALUES
The
.Fn toascii
function always returns a valid ASCII character.
The result is a non-negative integer in the
range from 0 to 127, inclusive.
.Sh SEE ALSO
.Xr ctype 3 ,
.Xr isalnum 3 ,
.Xr isalpha 3 ,
.Xr isascii 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 tolower 3 ,
.Xr toupper 3 ,
.Xr ascii 7
.Sh STANDARDS
The
.Fn toascii
function conforms to
.St -xpg4
and
.St -p1003.1-2001 .
The
.St -p1003.1-2008
revision however marked it as obsolete, noting that
.Fn toascii
cannot be used portably in a localized application.