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1// Copyright 2020, Collabora, Ltd.
2// SPDX-License-Identifier: BSL-1.0
3/*!
4 * @file
5 * @brief Code to generate permutation of indices.
6 * @author Jakob Bornecrantz <jakob@collabora.com>
7 * @ingroup aux_math
8 */
9
10
11#include "xrt/xrt_compiler.h"
12
13#pragma once
14
15
16#ifdef __cplusplus
17extern "C" {
18#endif
19
20
21
22struct m_permutator
23{
24 uint32_t *indices;
25 uint32_t *elements;
26 uint32_t i;
27 uint32_t n;
28};
29
30/*!
31 * Returns false if there are no new permutation available, the only thing you
32 * need to do before calling this function is to make sure that the struct has
33 * been zero initialised.
34 */
35bool
36m_permutator_step(struct m_permutator *mp, uint32_t *out_elements, uint32_t num_elements);
37
38void
39m_permutator_reset(struct m_permutator *mp);
40
41
42void
43m_do_the_thing(void);
44
45
46#ifdef __cplusplus
47}
48#endif