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