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/*
* Copyright 2015 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: AMD
*
*/
#ifndef BW_FIXED_H_
#define BW_FIXED_H_
#define BW_FIXED_BITS_PER_FRACTIONAL_PART 24
#define BW_FIXED_GET_INTEGER_PART(x) ((x) >> BW_FIXED_BITS_PER_FRACTIONAL_PART)
struct bw_fixed {
int64_t value;
};
#define BW_FIXED_MIN_I32 \
(int64_t)(-(1LL << (63 - BW_FIXED_BITS_PER_FRACTIONAL_PART)))
#define BW_FIXED_MAX_I32 \
(int64_t)((1ULL << (63 - BW_FIXED_BITS_PER_FRACTIONAL_PART)) - 1)
static inline struct bw_fixed bw_min2(const struct bw_fixed arg1,
const struct bw_fixed arg2)
{
return (arg1.value <= arg2.value) ? arg1 : arg2;
}
static inline struct bw_fixed bw_max2(const struct bw_fixed arg1,
const struct bw_fixed arg2)
{
return (arg2.value <= arg1.value) ? arg1 : arg2;
}
static inline struct bw_fixed bw_min3(struct bw_fixed v1,
struct bw_fixed v2,
struct bw_fixed v3)
{
return bw_min2(bw_min2(v1, v2), v3);
}
static inline struct bw_fixed bw_max3(struct bw_fixed v1,
struct bw_fixed v2,
struct bw_fixed v3)
{
return bw_max2(bw_max2(v1, v2), v3);
}
struct bw_fixed bw_int_to_fixed_nonconst(int64_t value);
static inline struct bw_fixed bw_int_to_fixed(int64_t value)
{
if (__builtin_constant_p(value)) {
struct bw_fixed res;
BUILD_BUG_ON(value > BW_FIXED_MAX_I32 || value < BW_FIXED_MIN_I32);
res.value = value << BW_FIXED_BITS_PER_FRACTIONAL_PART;
return res;
} else
return bw_int_to_fixed_nonconst(value);
}
static inline int32_t bw_fixed_to_int(struct bw_fixed value)
{
return BW_FIXED_GET_INTEGER_PART(value.value);
}
struct bw_fixed bw_frc_to_fixed(int64_t num, int64_t denum);
static inline struct bw_fixed fixed31_32_to_bw_fixed(int64_t raw)
{
struct bw_fixed result = { 0 };
if (raw < 0) {
raw = -raw;
result.value = -(raw >> (32 - BW_FIXED_BITS_PER_FRACTIONAL_PART));
} else {
result.value = raw >> (32 - BW_FIXED_BITS_PER_FRACTIONAL_PART);
}
return result;
}
static inline struct bw_fixed bw_add(const struct bw_fixed arg1,
const struct bw_fixed arg2)
{
struct bw_fixed res;
res.value = arg1.value + arg2.value;
return res;
}
static inline struct bw_fixed bw_sub(const struct bw_fixed arg1, const struct bw_fixed arg2)
{
struct bw_fixed res;
res.value = arg1.value - arg2.value;
return res;
}
struct bw_fixed bw_mul(const struct bw_fixed arg1, const struct bw_fixed arg2);
static inline struct bw_fixed bw_div(const struct bw_fixed arg1, const struct bw_fixed arg2)
{
return bw_frc_to_fixed(arg1.value, arg2.value);
}
static inline struct bw_fixed bw_mod(const struct bw_fixed arg1, const struct bw_fixed arg2)
{
struct bw_fixed res;
div64_u64_rem(arg1.value, arg2.value, (uint64_t *)&res.value);
return res;
}
struct bw_fixed bw_floor2(const struct bw_fixed arg, const struct bw_fixed significance);
struct bw_fixed bw_ceil2(const struct bw_fixed arg, const struct bw_fixed significance);
static inline bool bw_equ(const struct bw_fixed arg1, const struct bw_fixed arg2)
{
return arg1.value == arg2.value;
}
static inline bool bw_neq(const struct bw_fixed arg1, const struct bw_fixed arg2)
{
return arg1.value != arg2.value;
}
static inline bool bw_leq(const struct bw_fixed arg1, const struct bw_fixed arg2)
{
return arg1.value <= arg2.value;
}
static inline bool bw_meq(const struct bw_fixed arg1, const struct bw_fixed arg2)
{
return arg1.value >= arg2.value;
}
static inline bool bw_ltn(const struct bw_fixed arg1, const struct bw_fixed arg2)
{
return arg1.value < arg2.value;
}
static inline bool bw_mtn(const struct bw_fixed arg1, const struct bw_fixed arg2)
{
return arg1.value > arg2.value;
}
#endif //BW_FIXED_H_
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