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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2007-05-21 17:50:05 +00:00
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fputwc, putwc \- write a wide character to a FILE stream
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2004-11-03 13:51:07 +00:00
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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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2007-05-12 09:06:04 +00:00
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The
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.BR fputwc ()
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function is the wide-character
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equivalent of the
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2007-05-21 17:50:05 +00:00
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.BR fputc (3)
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2007-05-12 09:06:04 +00:00
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function.
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2007-04-12 22:42:49 +00:00
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It writes the wide character \fIwc\fP to \fIstream\fP.
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If
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2007-07-09 20:43:38 +00:00
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\fIferror(stream)\fP becomes true, it returns
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.BR WEOF .
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2007-04-24 19:40:35 +00:00
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If a wide-character conversion error occurs,
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2007-07-09 20:43:38 +00:00
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it sets \fIerrno\fP to \fBEILSEQ\fP and returns
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.BR 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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2007-05-12 09:06:04 +00:00
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The
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.BR putwc ()
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function or macro functions identically to
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.BR fputwc ().
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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.
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There is no reason ever to use it.
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2004-11-03 13:51:07 +00:00
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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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2007-05-12 09:06:04 +00:00
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The
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.BR fputwc ()
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2007-07-09 20:43:38 +00:00
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function returns \fIwc\fP if no error occurred, or
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.B WEOF
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to indicate an error.
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2004-11-03 13:51:07 +00:00
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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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2006-08-04 09:41:28 +00:00
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C99, 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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2007-06-08 09:56:56 +00:00
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The behavior of
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2007-05-12 09:06:04 +00:00
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.BR fputwc ()
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2007-06-22 18:25:23 +00:00
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depends on the
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.B LC_CTYPE
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category of the
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current locale.
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.PP
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2007-04-12 22:42:49 +00:00
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In the absence of additional information passed to the
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2007-05-12 00:30:29 +00:00
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.BR fopen (3)
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2005-10-20 15:11:10 +00:00
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call, it is
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2007-05-12 09:06:04 +00:00
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reasonable to expect that
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.BR fputwc ()
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will actually write the multibyte
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2004-11-03 13:51:07 +00:00
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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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