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[glibc.git] / wcsmbs / btowc.c
blob4c2f9df2150bf0c4e8ea4b29d89dae3db0df8f82
1 /* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 The GNU C Library 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 GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 #include <stdio.h>
21 #include <wchar.h>
24 /* We use UTF8 encoding for multibyte strings and therefore a valid
25 one byte multibyte string only can have a value from 0 to 0x7f. */
26 wint_t
27 btowc (c)
28 int c;
30 if (WEOF != (wint_t) EOF || c < 0 || c > 0x7f)
31 return WEOF;
32 else
33 return (wint_t) c;