NetBSD/lib/libc/locale/iswalnum.3
2002-07-10 14:46:10 +00:00

118 lines
3.5 KiB
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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.
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.\" @(#)isalnum.3 5.2 (Berkeley) 6/29/91
.\"
.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.