Commit | Line | Data |
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460b9539 | 1 | /* |
2 | * This file is part of DisOrder | |
5aff007d | 3 | * Copyright (C) 2004, 2007, 2008 Richard Kettlewell |
460b9539 | 4 | * |
e7eb3a27 | 5 | * This program is free software: you can redistribute it and/or modify |
460b9539 | 6 | * it under the terms of the GNU General Public License as published by |
e7eb3a27 | 7 | * the Free Software Foundation, either version 3 of the License, or |
460b9539 | 8 | * (at your option) any later version. |
e7eb3a27 RK |
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 | |
13 | * GNU General Public License for more details. | |
14 | * | |
460b9539 | 15 | * You should have received a copy of the GNU General Public License |
e7eb3a27 | 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
460b9539 | 17 | */ |
132a5a4a RK |
18 | /** @file lib/table.c |
19 | * @brief Generic binary search | |
20 | */ | |
05b75f8d | 21 | #include "common.h" |
460b9539 | 22 | |
23 | #include "table.h" | |
24 | ||
25 | int table_find(const void *table, size_t offset, size_t eltsize, size_t nelts, | |
26 | const char *name) { | |
27 | int l = 0, r = (int)nelts - 1, c, m; | |
28 | const char *k; | |
29 | ||
30 | while(l <= r) { | |
31 | k = *(const char **)((char *)table + offset + eltsize * (m = (l + r) / 2)); | |
32 | if(!(c = strcmp(name, k))) | |
33 | return m; | |
34 | if(c < 0) | |
35 | r = m - 1; | |
36 | else | |
37 | l = m + 1; | |
38 | } | |
39 | return -1; | |
40 | } | |
41 | ||
42 | /* | |
43 | Local Variables: | |
44 | c-basic-offset:2 | |
45 | comment-column:40 | |
46 | End: | |
47 | */ |