1 /* Mirrored Unicode characters.
2 Copyright (C) 2002, 2006, 2009-2013 Free Software Foundation, Inc.
3 Written by Bruno Haible <bruno@clisp.org>, 2002.
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 <http://www.gnu.org/licenses/>. */
23 /* Define u_mirror table. */
27 uc_mirror_char (ucs4_t uc, ucs4_t *puc)
29 unsigned int index1 = uc >> mirror_header_0;
30 if (index1 < mirror_header_1)
32 int lookup1 = u_mirror.level1[index1];
35 unsigned int index2 = (uc >> mirror_header_2) & mirror_header_3;
36 int lookup2 = u_mirror.level2[lookup1 + index2];
39 unsigned int index3 = (uc & mirror_header_4);
40 int lookup3 = u_mirror.level3[lookup2 + index3];
43 return (lookup3 != 0);