1 /* Simple case mapping for Unicode characters.
2 Copyright (C) 2002, 2006, 2009-2024 Free Software Foundation, Inc.
3 Written by Bruno Haible <bruno@clisp.org>, 2009.
5 This file is free software: you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as
7 published by the Free Software Foundation; either version 2.1 of the
8 License, or (at your option) any later version.
10 This file 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 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/>. */
21 unsigned int index1
= uc
>> mapping_header_0
;
22 if (index1
< mapping_header_1
)
24 int lookup1
= u_mapping
.level1
[index1
];
27 unsigned int index2
= (uc
>> mapping_header_2
) & mapping_header_3
;
28 int lookup2
= u_mapping
.level2
[lookup1
+ index2
];
31 unsigned int index3
= (uc
& mapping_header_4
);
32 int lookup3
= u_mapping
.level3
[lookup2
+ index3
];