linux/drivers/gpu/drm/amd/display/dc/dml/calcs/dcn_calc_math.c

/*
 * Copyright 2017 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
 *
 */

#include "os_types.h"
#include "dcn_calc_math.h"

#define isNaN(number) …

/*
 * NOTE:
 *   This file is gcc-parseable HW gospel, coming straight from HW engineers.
 *
 * It doesn't adhere to Linux kernel style and sometimes will do things in odd
 * ways. Unless there is something clearly wrong with it the code should
 * remain as-is as it provides us with a guarantee from HW that it is correct.
 */

float dcn_bw_mod(const float arg1, const float arg2)
{ … }

float dcn_bw_min2(const float arg1, const float arg2)
{ … }

unsigned int dcn_bw_max(const unsigned int arg1, const unsigned int arg2)
{ … }
float dcn_bw_max2(const float arg1, const float arg2)
{ … }

float dcn_bw_floor2(const float arg, const float significance)
{ … }
float dcn_bw_floor(const float arg)
{ … }

float dcn_bw_ceil(const float arg)
{ … }

float dcn_bw_ceil2(const float arg, const float significance)
{ … }

float dcn_bw_max3(float v1, float v2, float v3)
{ … }

float dcn_bw_max5(float v1, float v2, float v3, float v4, float v5)
{ … }

float dcn_bw_pow(float a, float exp)
{ … }

double dcn_bw_fabs(double a)
{ … }


float dcn_bw_log(float a, float b)
{ … }