tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright 2012-15 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: AMD
23 *
24 */
25
26
27#ifndef __DAL_FIXED32_32_H__
28#define __DAL_FIXED32_32_H__
29
30#include "os_types.h"
31
32struct fixed32_32 {
33 uint64_t value;
34};
35
36static const struct fixed32_32 dal_fixed32_32_zero = { 0 };
37static const struct fixed32_32 dal_fixed32_32_one = { 0x100000000LL };
38static const struct fixed32_32 dal_fixed32_32_half = { 0x80000000LL };
39
40struct fixed32_32 dal_fixed32_32_from_fraction(uint32_t n, uint32_t d);
41static inline struct fixed32_32 dal_fixed32_32_from_int(uint32_t value)
42{
43 struct fixed32_32 fx;
44
45 fx.value = (uint64_t)value<<32;
46 return fx;
47}
48
49struct fixed32_32 dal_fixed32_32_add(
50 struct fixed32_32 lhs,
51 struct fixed32_32 rhs);
52struct fixed32_32 dal_fixed32_32_add_int(
53 struct fixed32_32 lhs,
54 uint32_t rhs);
55struct fixed32_32 dal_fixed32_32_sub(
56 struct fixed32_32 lhs,
57 struct fixed32_32 rhs);
58struct fixed32_32 dal_fixed32_32_sub_int(
59 struct fixed32_32 lhs,
60 uint32_t rhs);
61struct fixed32_32 dal_fixed32_32_mul(
62 struct fixed32_32 lhs,
63 struct fixed32_32 rhs);
64struct fixed32_32 dal_fixed32_32_mul_int(
65 struct fixed32_32 lhs,
66 uint32_t rhs);
67struct fixed32_32 dal_fixed32_32_div(
68 struct fixed32_32 lhs,
69 struct fixed32_32 rhs);
70struct fixed32_32 dal_fixed32_32_div_int(
71 struct fixed32_32 lhs,
72 uint32_t rhs);
73
74static inline struct fixed32_32 dal_fixed32_32_min(struct fixed32_32 lhs,
75 struct fixed32_32 rhs)
76{
77 return (lhs.value < rhs.value) ? lhs : rhs;
78}
79
80static inline struct fixed32_32 dal_fixed32_32_max(struct fixed32_32 lhs,
81 struct fixed32_32 rhs)
82{
83 return (lhs.value > rhs.value) ? lhs : rhs;
84}
85
86static inline bool dal_fixed32_32_gt(struct fixed32_32 lhs, struct fixed32_32 rhs)
87{
88 return lhs.value > rhs.value;
89}
90
91static inline bool dal_fixed32_32_gt_int(struct fixed32_32 lhs, uint32_t rhs)
92{
93 return lhs.value > ((uint64_t)rhs<<32);
94}
95
96static inline bool dal_fixed32_32_lt(struct fixed32_32 lhs, struct fixed32_32 rhs)
97{
98 return lhs.value < rhs.value;
99}
100
101static inline bool dal_fixed32_32_lt_int(struct fixed32_32 lhs, uint32_t rhs)
102{
103 return lhs.value < ((uint64_t)rhs<<32);
104}
105
106static inline bool dal_fixed32_32_le(struct fixed32_32 lhs, struct fixed32_32 rhs)
107{
108 return lhs.value <= rhs.value;
109}
110
111static inline bool dal_fixed32_32_le_int(struct fixed32_32 lhs, uint32_t rhs)
112{
113 return lhs.value <= ((uint64_t)rhs<<32);
114}
115
116static inline bool dal_fixed32_32_eq(struct fixed32_32 lhs, struct fixed32_32 rhs)
117{
118 return lhs.value == rhs.value;
119}
120
121uint32_t dal_fixed32_32_ceil(struct fixed32_32 value);
122static inline uint32_t dal_fixed32_32_floor(struct fixed32_32 value)
123{
124 return value.value>>32;
125}
126
127uint32_t dal_fixed32_32_round(struct fixed32_32 value);
128
129#endif