1 /* Conversion UTF-16 to UCS-4.
2 Copyright (C) 2001-2002, 2006-2007, 2009-2019 Free Software Foundation, Inc.
3 Written by Bruno Haible <bruno@clisp.org>, 2001.
5 This program is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Lesser General Public License as published
7 by the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
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 GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License
16 along with this program. If not, see <https://www.gnu.org/licenses/>. */
23 #if defined IN_LIBUNISTRING || HAVE_INLINE
26 u16_mbtouc_unsafe_aux (ucs4_t
*puc
, const uint16_t *s
, size_t n
)
34 if (s
[1] >= 0xdc00 && s
[1] < 0xe000)
36 *puc
= 0x10000 + ((c
- 0xd800) << 10) + (s
[1] - 0xdc00);
39 /* invalid multibyte character */
43 /* incomplete multibyte character */
46 /* invalid multibyte character */