1/***
2  This file is part of PulseAudio.
3
4  Copyright 2009 Lennart Poettering
5
6  PulseAudio is free software; you can redistribute it and/or modify
7  it under the terms of the GNU Lesser General Public License as published
8  by the Free Software Foundation; either version 2.1 of the License,
9  or (at your option) any later version.
10
11  PulseAudio is distributed in the hope that it will be useful, but
12  WITHOUT ANY WARRANTY; without even the implied warranty of
13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  General Public License for more details.
15
16  You should have received a copy of the GNU Lesser General Public License
17  along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
18***/
19
20#ifdef HAVE_CONFIG_H
21#include <config.h>
22#endif
23
24#include <string.h>
25
26#include <pulse/xmalloc.h>
27
28#include "bitset.h"
29
30void pa_bitset_set(pa_bitset_t *b, unsigned k, bool v) {
31    pa_assert(b);
32
33    if (v)
34        b[k >> 5] |= 1 << (k & 31);
35    else
36        b[k >> 5] &= ~((uint32_t) (1 << (k & 31)));
37}
38
39bool pa_bitset_get(const pa_bitset_t *b, unsigned k) {
40    return !!(b[k >> 5] & (1 << (k & 31)));
41}
42
43bool pa_bitset_equals(const pa_bitset_t *b, unsigned n, ...) {
44    va_list ap;
45    pa_bitset_t *a;
46    bool equal;
47
48    a = pa_xnew0(pa_bitset_t, PA_BITSET_ELEMENTS(n));
49
50    va_start(ap, n);
51    for (;;) {
52        int j = va_arg(ap, int);
53
54        if (j < 0)
55            break;
56
57        pa_bitset_set(a, j, true);
58    }
59    va_end(ap);
60
61    equal = memcmp(a, b, PA_BITSET_SIZE(n)) == 0;
62    pa_xfree(a);
63
64    return equal;
65}
66