newlib-cygwin/newlib/libc/stdio/putwchar.c

126 lines
3.6 KiB
C

/*-
* Copyright (c) 2002 Tim J. Robbins.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
FUNCTION
<<putwchar>>, <<putwchar_unlocked>>---write a wide character to standard output
INDEX
putwchar
INDEX
putwchar_unlocked
INDEX
_putwchar_r
INDEX
_putwchar_unlocked_r
ANSI_SYNOPSIS
#include <wchar.h>
wint_t putwchar(wchar_t <[wc]>);
#include <wchar.h>
wint_t putwchar_unlocked(wchar_t <[wc]>);
#include <wchar.h>
wint_t _putwchar_r(struct _reent *<[reent]>, wchar_t <[wc]>);
#include <wchar.h>
wint_t _putwchar_unlocked_r(struct _reent *<[reent]>, wchar_t <[wc]>);
TRAD_SYNOPSIS
#include <wchar.h>
wint_t putwchar(<[wc]>)
wchar_t <[wc]>;
#include <wchar.h>
wint_t putwchar_unlocked(<[wc]>)
wchar_t <[wc]>;
#include <wchar.h>
wint_t _putwchar_r(<[reent]>, <[wc]>)
struct _reent *<[reent]>;
wchar_t <[wc]>;
#include <wchar.h>
wint_t _putwchar_unlocked_r(<[reent]>, <[wc]>)
struct _reent *<[reent]>;
wchar_t <[wc]>;
DESCRIPTION
The <<putwchar>> function or macro is the wide-character equivalent of
the <<putchar>> function. It writes the wide character wc to stdout.
<<putwchar_unlocked>> is a non-thread-safe version of <<putwchar>>.
<<putwchar_unlocked>> may only safely be used within a scope
protected by flockfile() (or ftrylockfile()) and funlockfile(). This
function may safely be used in a multi-threaded program if and only
if they are called while the invoking thread owns the (FILE *)
object, as is the case after a successful call to the flockfile() or
ftrylockfile() functions. If threads are disabled, then
<<putwchar_unlocked>> is equivalent to <<putwchar>>.
The alternate functions <<_putwchar_r>> and <<_putwchar_unlocked_r>> are
reentrant versions of the above. The extra argument <[reent]> is a pointer
to a reentrancy structure.
RETURNS
If successful, <<putwchar>> returns its argument <[wc]>. If an error
intervenes, the result is <<EOF>>. You can use `<<ferror(stdin)>>' to
query for errors.
PORTABILITY
<<putwchar>> is required by C99.
<<putwchar_unlocked>> is a GNU extension.
*/
#include <_ansi.h>
#include <reent.h>
#include <stdio.h>
#include <wchar.h>
#include "local.h"
#undef putwchar
wint_t
_DEFUN(_putwchar_r, (ptr, wc),
struct _reent *ptr _AND
wchar_t wc)
{
return _fputwc_r (ptr, wc, stdout);
}
/*
* Synonym for fputwc(wc, stdout).
*/
wint_t
_DEFUN(putwchar, (wc),
wchar_t wc)
{
_REENT_SMALL_CHECK_INIT (_REENT);
return fputwc (wc, stdout);
}