mirror of https://github.com/mkerrisk/man-pages
109 lines
3.6 KiB
Plaintext
109 lines
3.6 KiB
Plaintext
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.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
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.TH "<wctype.h>" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
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.\" <wctype.h>
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.SH NAME
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wctype.h \- wide-character classification and mapping utilities
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.SH SYNOPSIS
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.LP
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\fB#include <wctype.h>\fP
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.SH DESCRIPTION
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.LP
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Some of the functionality described on this reference page extends
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the ISO\ C standard. Applications shall define
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the appropriate feature test macro (see the System Interfaces volume
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of IEEE\ Std\ 1003.1-2001, Section 2.2, The Compilation Environment)
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to enable the visibility of these symbols in this
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header.
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.LP
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The \fI<wctype.h>\fP header shall define the following types:
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.TP 7
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\fBwint_t\fP
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As described in \fI<wchar.h>\fP .
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.TP 7
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\fBwctrans_t\fP
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A scalar type that can hold values which represent locale-specific
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character mappings.
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.TP 7
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\fBwctype_t\fP
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As described in \fI<wchar.h>\fP .
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.sp
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.LP
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The following shall be declared as functions and may also be defined
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as macros. Function prototypes shall be provided.
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.sp
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.RS
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.nf
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\fBint iswalnum(wint_t);
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int iswalpha(wint_t);
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int iswblank(wint_t);
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int iswcntrl(wint_t);
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int iswdigit(wint_t);
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int iswgraph(wint_t);
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int iswlower(wint_t);
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int iswprint(wint_t);
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int iswpunct(wint_t);
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int iswspace(wint_t);
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int iswupper(wint_t);
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int iswxdigit(wint_t);
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int iswctype(wint_t, wctype_t);
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wint_t towctrans(wint_t, wctrans_t);
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wint_t towlower(wint_t);
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wint_t towupper(wint_t);
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wctrans_t wctrans(const char *);
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wctype_t wctype(const char *);
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\fP
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.fi
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.RE
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.LP
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The \fI<wctype.h>\fP header shall define the following macro name:
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.TP 7
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WEOF
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Constant expression of type \fBwint_t\fP that is returned by several
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MSE functions to indicate end-of-file.
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.sp
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.LP
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For all functions described in this header that accept an argument
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of type \fBwint_t\fP, the value is representable as a
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\fBwchar_t\fP or equals the value of WEOF. If this argument has any
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other value, the behavior is undefined.
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.LP
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The behavior of these functions shall be affected by the \fILC_CTYPE\fP
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category of the current locale.
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.LP
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Inclusion of the \fI<wctype.h>\fP header may make visible all symbols
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from the headers \fI<ctype.h>\fP, \fI<stdarg.h>\fP, \fI<stddef.h>\fP,
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\fI<stdio.h>\fP, \fI<stdlib.h>\fP, \fI<string.h>\fP, \fI<time.h>\fP,
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and \fI<wchar.h>\fP.
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.LP
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\fIThe following sections are informative.\fP
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.SH APPLICATION USAGE
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.LP
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None.
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.SH RATIONALE
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.LP
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None.
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.SH FUTURE DIRECTIONS
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.LP
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None.
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.SH SEE ALSO
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.LP
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\fI<ctype.h>\fP , \fI<locale.h>\fP , \fI<stdarg.h>\fP , \fI<stddef.h>\fP
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, \fI<stdio.h>\fP , \fI<stdlib.h>\fP , \fI<string.h>\fP , \fI<time.h>\fP
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, \fI<wchar.h>\fP , the System Interfaces volume of IEEE\ Std\ 1003.1-2001,
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\fIiswalnum\fP(), \fIiswalpha\fP(), \fIiswblank\fP(), \fIiswcntrl\fP(),
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\fIiswctype\fP(), \fIiswdigit\fP(), \fIiswgraph\fP(), \fIiswlower\fP(),
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\fIiswprint\fP(), \fIiswpunct\fP(), \fIiswspace\fP(), \fIiswupper\fP(),
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\fIiswxdigit\fP(), \fIsetlocale\fP(), \fItowctrans\fP(), \fItowlower\fP(),
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\fItowupper\fP(), \fIwctrans\fP(), \fIwctype\fP()
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.SH COPYRIGHT
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Portions of this text are reprinted and reproduced in electronic form
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from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
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-- Portable Operating System Interface (POSIX), The Open Group Base
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Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
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Electrical and Electronics Engineers, Inc and The Open Group. In the
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event of any discrepancy between this version and the original IEEE and
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The Open Group Standard, the original IEEE and The Open Group Standard
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is the referee document. The original Standard can be obtained online at
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http://www.opengroup.org/unix/online.html .
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