Differential D12367 Diff 41308 intern/cycles/test/util_math_test.cpp

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				/*
				* Copyright 2011-2021 Blender Foundation
				*
				* Licensed under the Apache License, Version 2.0 (the "License");
				* you may not use this file except in compliance with the License.
				* You may obtain a copy of the License at
				*
				* http://www.apache.org/licenses/LICENSE-2.0
				*
				* Unless required by applicable law or agreed to in writing, software
				* distributed under the License is distributed on an "AS IS" BASIS,
				* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
				* See the License for the specific language governing permissions and
				* limitations under the License.
				*/

				#include "testing/testing.h"

				#include "util/util_math.h"

				CCL_NAMESPACE_BEGIN

				TEST(math, next_power_of_two)
				{
				EXPECT_EQ(next_power_of_two(0), 1);
				EXPECT_EQ(next_power_of_two(1), 2);
				EXPECT_EQ(next_power_of_two(2), 4);
				EXPECT_EQ(next_power_of_two(3), 4);
				EXPECT_EQ(next_power_of_two(4), 8);
				}

				TEST(math, prev_power_of_two)
				{
				EXPECT_EQ(prev_power_of_two(0), 0);

				EXPECT_EQ(prev_power_of_two(1), 1);
				EXPECT_EQ(prev_power_of_two(2), 1);

				EXPECT_EQ(prev_power_of_two(3), 2);
				EXPECT_EQ(prev_power_of_two(4), 2);

				EXPECT_EQ(prev_power_of_two(5), 4);
				EXPECT_EQ(prev_power_of_two(6), 4);
				EXPECT_EQ(prev_power_of_two(7), 4);
				EXPECT_EQ(prev_power_of_two(8), 4);
				}

				CCL_NAMESPACE_END