2004-11-03 13:51:07 +00:00
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.\" Copyright (c) Bruno Haible <haible@clisp.cons.org>
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.\"
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.\" This is free documentation; you can redistribute it and/or
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.\" modify it under the terms of the GNU General Public License as
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.\" published by the Free Software Foundation; either version 2 of
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.\" the License, or (at your option) any later version.
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.\"
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.\" References consulted:
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.\" GNU glibc-2 source code and manual
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.\" Dinkumware C library reference http://www.dinkumware.com/
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.\" OpenGroup's Single Unix specification http://www.UNIX-systems.org/online.html
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.\" ISO/IEC 9899:1999
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.\"
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.TH FPUTWC 3 1999-07-25 "GNU" "Linux Programmer's Manual"
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.SH NAME
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fputwc \- write a wide character to a FILE stream
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.SH SYNOPSIS
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.nf
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.B #include <stdio.h>
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.br
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.B #include <wchar.h>
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.sp
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.BI "wint_t fputwc(wchar_t " wc ", FILE *" stream );
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.BI "wint_t putwc(wchar_t " wc ", FILE *" stream );
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.fi
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.SH DESCRIPTION
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2005-10-19 08:35:30 +00:00
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The \fBfputwc\fP() function is the wide-character equivalent of the \fBfputc\fP()
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2004-11-03 13:51:07 +00:00
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function. It writes the wide character \fIwc\fP to \fIstream\fP. If
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\fIferror(stream)\fP becomes true, it returns WEOF. If a wide character
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conversion error occurs, it sets \fIerrno\fP to \fBEILSEQ\fP and returns WEOF.
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2004-11-03 13:51:07 +00:00
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Otherwise it returns \fIwc\fP.
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.PP
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2005-10-19 06:54:38 +00:00
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The \fBputwc\fP() function or macro functions identically to \fBfputwc\fP().
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2004-11-03 13:51:07 +00:00
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It may be implemented as a macro, and may evaluate its argument
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more than once. There is no reason ever to use it.
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.PP
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For non-locking counterparts, see
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.BR unlocked_stdio (3).
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.SH "RETURN VALUE"
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2005-10-19 06:54:38 +00:00
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The \fBfputwc\fP() function returns \fIwc\fP if no error occurred, or WEOF to
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indicate an error.
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.SH ERRORS
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Apart from the usual ones, there is
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.TP
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.B EILSEQ
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Conversion of \fIwc\fP to the stream's encoding fails.
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.SH "CONFORMING TO"
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2006-08-03 13:57:30 +00:00
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ISO/ANSI C, POSIX.1-2001.
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2004-11-03 13:51:07 +00:00
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.SH NOTES
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2005-10-19 06:54:38 +00:00
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The behaviour of \fBfputwc\fP() depends on the LC_CTYPE category of the
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current locale.
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.PP
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2005-10-20 15:11:10 +00:00
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In the absence of additional information passed to the
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.BR fopen ()
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call, it is
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reasonable to expect that \fBfputwc\fP() will actually write the multibyte
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sequence corresponding to the wide character \fIwc\fP.
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.SH "SEE ALSO"
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.BR fgetwc (3),
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.BR fputws (3),
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.BR unlocked_stdio (3)
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