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