1/* Categories of Unicode characters.
2   Copyright (C) 2007, 2009-2010 Free Software Foundation, Inc.
3   Written by Bruno Haible <bruno@clisp.org>, 2007.
4
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.
9
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.
14
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/>.  */
17
18#include <config.h>
19
20/* Specification.  */
21#include "unictype.h"
22
23uc_general_category_t
24uc_general_category_and_not (uc_general_category_t category1,
25                             uc_general_category_t category2)
26{
27  uint32_t bitmask;
28  uc_general_category_t result;
29
30  bitmask = category1.bitmask & ~category2.bitmask;
31
32  if (bitmask == category1.bitmask)
33    return category1;
34
35  if (bitmask == 0)
36    return _UC_CATEGORY_NONE;
37
38  result.bitmask = bitmask;
39  result.generic = 1;
40  result.lookup.lookup_fn = &uc_is_general_category_withtable;
41  return result;
42}
43