blob: c3198114a128941fb6f360d9a16faa327b28f381 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
/* Copyright (C) 2000-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Bruno Haible <haible@clisp.cons.org>, 2000.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <stdint.h>
/* Lookup in a table of int32_t, with default value 0. */
int32_t
__collidx_table_lookup (const char *table, uint32_t wc)
{
uint32_t shift1 = ((const uint32_t *) table)[0];
uint32_t index1 = wc >> shift1;
uint32_t bound = ((const uint32_t *) table)[1];
if (index1 < bound)
{
uint32_t lookup1 = ((const uint32_t *) table)[5 + index1];
if (lookup1 != 0)
{
uint32_t shift2 = ((const uint32_t *) table)[2];
uint32_t mask2 = ((const uint32_t *) table)[3];
uint32_t index2 = (wc >> shift2) & mask2;
uint32_t lookup2 = ((const uint32_t *)(table + lookup1))[index2];
if (lookup2 != 0)
{
uint32_t mask3 = ((const uint32_t *) table)[4];
uint32_t index3 = wc & mask3;
int32_t lookup3 = ((const int32_t *)(table + lookup2))[index3];
return lookup3;
}
}
}
return 0;
}
/* Lookup in a table of uint32_t, with default value 0xffffffff. */
uint32_t
__collseq_table_lookup (const char *table, uint32_t wc)
{
uint32_t shift1 = ((const uint32_t *) table)[0];
uint32_t index1 = wc >> shift1;
uint32_t bound = ((const uint32_t *) table)[1];
if (index1 < bound)
{
uint32_t lookup1 = ((const uint32_t *) table)[5 + index1];
if (lookup1 != 0)
{
uint32_t shift2 = ((const uint32_t *) table)[2];
uint32_t mask2 = ((const uint32_t *) table)[3];
uint32_t index2 = (wc >> shift2) & mask2;
uint32_t lookup2 = ((const uint32_t *)(table + lookup1))[index2];
if (lookup2 != 0)
{
uint32_t mask3 = ((const uint32_t *) table)[4];
uint32_t index3 = wc & mask3;
uint32_t lookup3 = ((const uint32_t *)(table + lookup2))[index3];
return lookup3;
}
}
}
return ~((uint32_t) 0);
}
|
