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Manual pages for wide character classification (isw*) and case conversion

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(tow*) functions from NetBSD, unmodified except for the addition of $FreeBSD$.

Obtained from:	NetBSD
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Tim J. Robbins 2002-08-05 08:04:58 +00:00
parent 6edfb9d7cb
commit 008a2c53ce
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=101361
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118
lib/libc/locale/iswalnum.3 Normal file
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.\" $NetBSD: iswalnum.3,v 1.5 2002/07/10 14:46:10 yamt Exp $
.\"
.\" Copyright (c) 1991 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" the American National Standards Committee X3, on Information
.\" Processing Systems.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by the University of
.\" California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)isalnum.3 5.2 (Berkeley) 6/29/91
.\" $FreeBSD$
.\"
.Dd December 22, 2000
.Dt ISWALNUM 3
.Os
.Sh NAME
.Nm iswalnum ,
.Nm iswalpha ,
.Nm iswblank ,
.Nm iswcntrl ,
.Nm iswdigit ,
.Nm iswgraph ,
.Nm iswlower ,
.Nm iswprint ,
.Nm iswpunct ,
.Nm iswspace ,
.Nm iswupper ,
.Nm iswxdigit
.Nd wide character classification utilities
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.Fd #include \*[Lt]wctype.h\*[Gt]
.Ft int
.Fn iswalnum "wint_t wc"
.Ft int
.Fn iswalpha "wint_t wc"
.Ft int
.Fn iswblank "wint_t wc"
.Ft int
.Fn iswcntrl "wint_t wc"
.Ft int
.Fn iswdigit "wint_t wc"
.Ft int
.Fn iswgraph "wint_t wc"
.Ft int
.Fn iswlower "wint_t wc"
.Ft int
.Fn iswprint "wint_t wc"
.Ft int
.Fn iswpunct "wint_t wc"
.Ft int
.Fn iswspace "wint_t wc"
.Ft int
.Fn iswupper "wint_t wc"
.Ft int
.Fn iswxdigit "wint_t wc"
.Sh DESCRIPTION
The functions are character classification utility functions,
for use with wide characters
.Po
.Fa wchar_t
or
.Fa wint_t
.Pc .
See description for singlebyte classification functions, like
.Xr isalnum 3 ,
for details.
.Sh RETURN VALUES
The functions return zero if the character tests false and
return non-zero if the character tests true.
.Sh SEE ALSO
.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
.Sh STANDARDS
The functions conform to
.St -isoC99 .
.Sh CAVEATS
The argument to these functions must be WEOF or valid wchar_t
value with current locale; otherwise, the result is undefined.

74
lib/libc/locale/towlower.3 Normal file
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.\" $NetBSD: towlower.3,v 1.3 2002/03/18 08:03:39 wiz Exp $
.\"
.\" Copyright (c) 1989, 1991 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" the American National Standards Committee X3, on Information
.\" Processing Systems.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by the University of
.\" California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)tolower.3 5.2 (Berkeley) 6/29/91
.\" $FreeBSD$
.\"
.Dd December 22, 2000
.Dt TOWLOWER 3
.Os
.Sh NAME
.Nm towlower
.Nd wide character case letter conversion utilities
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.Fd #include \*[Lt]wctype.h\*[Gt]
.Ft wint_t
.Fn towlower "wint_t wc"
.Ft wint_t
.Fn towlower "wint_t wc"
.Sh DESCRIPTION
The
.Fn towlower
function converts an upper-case wide character to the corresponding lower-case
letter.
The
.Fn towupper
function converts an lower-case wide character to the corresponding upper-case
letter.
.Sh RETURN VALUES
If the argument is an upper/lower-case letter, the
.Fn tolower
function returns the corresponding counterpart if there is
one; otherwise the argument is returned unchanged.
.Sh SEE ALSO
.Xr tolower 3 ,
.Xr toupper 3
.Sh STANDARDS
The functions conform to
.St -isoC99 .