1 /* Convert unibyte character to wide character.
2 Copyright (C) 2008, 2010-2021 Free Software Foundation, Inc.
3 Written by Bruno Haible <bruno@clisp.org>, 2008.
4
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <https://www.gnu.org/licenses/>. */
17
18 #include <config.h>
19
20 /* Specification. */
21 #include <wchar.h>
22
23 #include <stdio.h>
24 #include <stdlib.h>
25
26 wint_t
btowc(int c)27 btowc (int c)
28 {
29 if (c != EOF)
30 {
31 char buf[1];
32 wchar_t wc;
33
34 buf[0] = c;
35 if (mbtowc (&wc, buf, 1) >= 0)
36 return wc;
37 }
38 return WEOF;
39 }
40