chiark / gitweb /
Merge mac build fix
[disorder] / lib / table.c
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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
25int 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/*
43Local Variables:
44c-basic-offset:2
45comment-column:40
46End:
47*/