1/*
2 * Copyright © 2022 Imagination Technologies Ltd.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 */
23
24#ifndef ROGUE_CONSTREGS_H
25#define ROGUE_CONSTREGS_H
26
27#include <stddef.h>
28#include <stdint.h>
29
30#include "util/macros.h"
31#include "util/u_math.h"
32
33#define ROGUE_NO_CONST_REG SIZE_MAX
34
35PUBLIC
36size_t rogue_constreg_lookup(uint32_t value);
37
38/**
39 * \brief Determines whether a given floating point value exists in a constant
40 * register.
41 *
42 * \param[in] value The value required.
43 * \return The index of the constant register containing the value, or
44 * ROGUE_NO_CONST_REG if the value is not found.
45 */
46static inline size_t rogue_constreg_lookup_float(float value)
47{
48   return rogue_constreg_lookup(fui(value));
49}
50
51#endif /* ROGUE_CONSTREGS_H */
52