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https://github.com/libretro/dolphin
synced 2024-09-19 12:05:10 -04:00
29 lines
688 B
C++
29 lines
688 B
C++
// Copyright 2014 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include <gtest/gtest.h>
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#include "Common/MathUtil.h"
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TEST(MathUtil, IntLog2)
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{
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EXPECT_EQ(0, IntLog2(1));
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EXPECT_EQ(1, IntLog2(2));
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EXPECT_EQ(2, IntLog2(4));
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EXPECT_EQ(3, IntLog2(8));
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EXPECT_EQ(63, IntLog2(0x8000000000000000ull));
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// Rounding behavior.
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EXPECT_EQ(3, IntLog2(15));
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EXPECT_EQ(63, IntLog2(0xFFFFFFFFFFFFFFFFull));
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}
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TEST(MathUtil, NextPowerOf2)
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{
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EXPECT_EQ(4U, MathUtil::NextPowerOf2(3));
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EXPECT_EQ(4U, MathUtil::NextPowerOf2(4));
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EXPECT_EQ(8U, MathUtil::NextPowerOf2(6));
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EXPECT_EQ(0x40000000U, MathUtil::NextPowerOf2(0x23456789));
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}
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