1 /*-
2 * Copyright (c) 2002 Tim J. Robbins.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 /*
28 FUNCTION
29 <<putwchar>>, <<putwchar_unlocked>>---write a wide character to standard output
30
31 INDEX
32 putwchar
33 INDEX
34 putwchar_unlocked
35 INDEX
36 _putwchar_r
37 INDEX
38 _putwchar_unlocked_r
39
40 SYNOPSIS
41 #include <wchar.h>
42 wint_t putwchar(wchar_t <[wc]>);
43
44 #include <wchar.h>
45 wint_t putwchar_unlocked(wchar_t <[wc]>);
46
47 #include <wchar.h>
48 wint_t putwchar( wchar_t <[wc]>);
49
50 #include <wchar.h>
51 wint_t putwchar_unlocked( wchar_t <[wc]>);
52
53 DESCRIPTION
54 The <<putwchar>> function or macro is the wide-character equivalent of
55 the <<putchar>> function. It writes the wide character wc to stdout.
56
57 <<putwchar_unlocked>> is a non-thread-safe version of <<putwchar>>.
58 <<putwchar_unlocked>> may only safely be used within a scope
59 protected by flockfile() (or ftrylockfile()) and funlockfile(). This
60 function may safely be used in a multi-threaded program if and only
61 if they are called while the invoking thread owns the (FILE *)
62 object, as is the case after a successful call to the flockfile() or
63 ftrylockfile() functions. If threads are disabled, then
64 <<putwchar_unlocked>> is equivalent to <<putwchar>>.
65
66 The alternate functions <<_putwchar_r>> and <<_putwchar_unlocked_r>> are
67 reentrant versions of the above. The extra argument <[reent]> is a pointer
68 to a reentrancy structure.
69
70 RETURNS
71 If successful, <<putwchar>> returns its argument <[wc]>. If an error
72 intervenes, the result is <<EOF>>. You can use `<<ferror(stdin)>>' to
73 query for errors.
74
75 PORTABILITY
76 <<putwchar>> is required by C99.
77
78 <<putwchar_unlocked>> is a GNU extension.
79 */
80
81 #define _DEFAULT_SOURCE
82 #include <_ansi.h>
83 #include <stdio.h>
84 #include <wchar.h>
85 #include "local.h"
86
87 #undef putwchar
88
89 /*
90 * Synonym for fputwc(wc, stdout).
91 */
92 wint_t
putwchar(wchar_t wc)93 putwchar (wchar_t wc)
94 {
95 _REENT_SMALL_CHECK_INIT (_REENT);
96 return fputwc (wc, stdout);
97 }
98
