fchmod-tests, fchmodat tests, lchmod tests: Add more tests.
[gnulib.git] / lib / unictype / decdigit.c
blob54e11e770b60f533b9b4b387cbab338afc9ad734
1 /* Values of decimal digit Unicode characters.
2 Copyright (C) 2002, 2006, 2009-2021 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 <https://www.gnu.org/licenses/>. */
18 #include <config.h>
20 /* Specification. */
21 #include "unictype.h"
23 /* Define u_decdigit table. */
24 #include "decdigit.h"
26 int
27 uc_decimal_value (ucs4_t uc)
29 unsigned int index1 = uc >> decdigit_header_0;
30 if (index1 < decdigit_header_1)
32 int lookup1 = u_decdigit.level1[index1];
33 if (lookup1 >= 0)
35 unsigned int index2 = (uc >> decdigit_header_2) & decdigit_header_3;
36 int lookup2 = u_decdigit.level2[lookup1 + index2];
37 if (lookup2 >= 0)
39 unsigned int index3 = (uc & decdigit_header_4) + lookup2;
40 /* level3 contains 4-bit values. */
41 unsigned int lookup3 =
42 (u_decdigit.level3[index3>>1] >> ((index3 % 2) * 4)) & 0x0f;
44 return (int) lookup3 - 1;
48 return -1;