1 /* Combining classes of Unicode characters.
2 Copyright (C) 2002, 2006, 2009-2014 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_combclass table. */
24 #include "combiningclass.h"
27 uc_combining_class (ucs4_t uc)
29 unsigned int index1 = uc >> combclass_header_0;
30 if (index1 < combclass_header_1)
32 int lookup1 = u_combclass.level1[index1];
35 unsigned int index2 = (uc >> combclass_header_2) & combclass_header_3;
36 int lookup2 = u_combclass.level2[lookup1 + index2];
39 unsigned int index3 = (uc & combclass_header_4);
40 unsigned int lookup3 = u_combclass.level3[lookup2 + index3];