'\" te
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.TH WCHAR.H 3HEAD "Sep 10, 2004"
.SH NAME
wchar.h, wchar \- wide-character handling
.SH SYNOPSIS
.LP
.nf
#include <\fBwchar.h\fR>
.fi

.SH DESCRIPTION
.sp
.LP
The <\fBwchar.h\fR> header defines the following types:
.sp
.ne 2
.na
\fB\fBwchar_t\fR\fR
.ad
.RS 13n
As described in <\fBstddef.h\fR>.
.RE

.sp
.ne 2
.na
\fB\fBwint_t\fR\fR
.ad
.RS 13n
An integer type capable of storing any valid value of \fBwchar_t\fR or
\fBWEOF\fR.
.RE

.sp
.ne 2
.na
\fB\fBwctype_t\fR\fR
.ad
.RS 13n
A scalar type of a data object that can hold values which represent
locale-specific character classification.
.RE

.sp
.ne 2
.na
\fB\fBmbstate_t\fR\fR
.ad
.RS 13n
An object type other than an array type that can hold the conversion state
information necessary to convert between sequences of (possibly multi-byte)
characters and wide characters.  If a codeset is being used such that  an
\fBmbstate_t\fR needs to preserve more than two levels of reserved state, the
results are unspecified.
.RE

.sp
.ne 2
.na
\fB\fBFILE\fR\fR
.ad
.RS 13n
As described in <\fBstdio.h\fR>.
.RE

.sp
.ne 2
.na
\fB\fBsize_t\fR\fR
.ad
.RS 13n
As described in <\fBstddef.h\fR>.
.RE

.sp
.ne 2
.na
\fB\fBva_list\fR\fR
.ad
.RS 13n
As described in <\fBstdarg.h\fR>.
.RE

.sp
.LP
The implementation supports one or more programming environments in which the
width of \fBwint_t\fR is no greater than the width of type \fBlong\fR. The
names of these programming environments can be obtained using the
\fBconfstr\fR(3C) function or the \fBgetconf\fR(1) utility.
.sp
.LP
The <\fBwchar.h\fR> header defines the following macros:
.sp
.ne 2
.na
\fB\fBWCHAR_MAX\fR\fR
.ad
.RS 13n
The maximum value representable by an object of type \fBwchar_t\fR.
.RE

.sp
.ne 2
.na
\fB\fBWCHAR_MIN\fR\fR
.ad
.RS 13n
The minimum value representable by an object of type \fBwchar_t\fR.
.RE

.sp
.ne 2
.na
\fB\fBWEOF\fR\fR
.ad
.RS 13n
Constant expression of type \fBwint_t\fR that is returned by several WP
functions to indicate end-of-file.
.RE

.sp
.ne 2
.na
\fB\fBNULL\fR\fR
.ad
.RS 13n
As described in <\fBstddef.h\fR>.
.RE

.sp
.LP
The tag \fBtm\fR is declared as naming an incomplete structure type, the
contents of which are described in the header <\fBtime.h\fR>.
.sp
.LP
Inclusion of the <\fBwchar.h\fR> header can make visible all symbols from the
headers <\fBctype.h\fR>,  <\fBstring.h\fR>, <\fBstdarg.h\fR>, <\fBstddef.h\fR>,
<\fBstdio.h\fR>, <\fBstdlib.h\fR>, and <\fBtime.h\fR>.
.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE
_
Interface Stability	Standard
.TE

.SH SEE ALSO
.sp
.LP
\fBgetconf\fR(1), \fBbtowc\fR(3C), \fBconfstr\fR(3C), \fBfgetwc\fR(3C),
\fBgetws\fR(3C), \fBfputwc\fR(3C), \fBfputws\fR(3C), \fBfwide\fR(3C),
\fBfwprintf\fR(3C), \fBfwscanf\fR(3C), \fBgetwc\fR(3C), \fBgetwchar\fR(3C),
\fBiswalpha\fR(3C), \fBiswctype\fR(3C), \fBmbsinit\fR(3C), \fBmbrlen\fR(3C),
\fBmbrtowc\fR(3C), \fBmbsrtowcs\fR(3C), \fBtowlower\fR(3C), \fBtowupper\fR(3C),
\fBungetwc\fR(3C), \fBvfwprintf\fR(3C), \fBwcrtomb\fR(3C), \fBwcsrtombs\fR(3C),
\fBwcstring\fR(3C), \fBwcsstr\fR(3C), \fBwcstod\fR(3C), \fBwcscoll\fR(3C),
\fBwcsftime\fR(3C), \fBwcstol\fR(3C), \fBwcstoul\fR(3C), \fBwcswidth\fR(3C),
\fBwcsxfrm\fR(3C), \fBwctob\fR(3C), \fBwctype\fR(3C), \fBwcwidth\fR(3C),
\fBwmemchr\fR(3C), \fBwmemcmp\fR(3C), \fBwmemcpy\fR(3C), \fBwmemmove\fR(3C),
\fBwmemset\fR(3C), \fBstdarg\fR(3EXT), \fBstddef.h\fR(3HEAD),
\fBstdio.h\fR(3HEAD), \fBstdlib.h\fR(3HEAD), \fBstring.h\fR(3HEAD),
\fBtime.h\fR(3HEAD), \fBwctype.h\fR(3HEAD), \fBattributes\fR(5),
\fBstandards\fR(5)