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| author | Markus Wick <degasus@users.noreply.github.com> | 2018-04-02 12:18:22 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-04-02 12:18:22 +0200 |
| commit | 2449be7f0c9b646b0b1110b6e3ad80a77bd8a1f7 (patch) | |
| tree | 5d3cc85e9019af52e830f2f3d4cd208c6a1cf078 /Source/UnitTests/Common/BitUtilsTest.cpp | |
| parent | dea30e08bf03aaa465a0b5c4d6f0c7195bed461a (diff) | |
| parent | 136f16599f5545f1ff286ad452edee508f204564 (diff) | |
Merge pull request #6571 from lioncash/rotate
CommonFuncs: Generify rotation functions and move them to BitUtils.h
Diffstat (limited to 'Source/UnitTests/Common/BitUtilsTest.cpp')
| -rw-r--r-- | Source/UnitTests/Common/BitUtilsTest.cpp | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/Source/UnitTests/Common/BitUtilsTest.cpp b/Source/UnitTests/Common/BitUtilsTest.cpp index 26232ca26e..4785f9dcef 100644 --- a/Source/UnitTests/Common/BitUtilsTest.cpp +++ b/Source/UnitTests/Common/BitUtilsTest.cpp @@ -58,6 +58,44 @@ TEST(BitUtils, ExtractBits) EXPECT_EQ((Common::ExtractBits<0, 31, s32, s32>(negative_one)), -1); } +TEST(BitUtils, RotateLeft) +{ + EXPECT_EQ(Common::RotateLeft(0xF0F0F0F0, 0), 0xF0F0F0F0); + EXPECT_EQ(Common::RotateLeft(0xF0F0F0F0, 4), 0x0F0F0F0F); + EXPECT_EQ(Common::RotateLeft(0xF0F0F0F0, 8), 0xF0F0F0F0); + EXPECT_EQ(Common::RotateLeft(0xF0F0F0F0F0F0F0F0, 0), 0xF0F0F0F0F0F0F0F0); + EXPECT_EQ(Common::RotateLeft(0xF0F0F0F0F0F0F0F0, 4), 0x0F0F0F0F0F0F0F0F); + EXPECT_EQ(Common::RotateLeft(0xF0F0F0F0F0F0F0F0, 8), 0xF0F0F0F0F0F0F0F0); + + EXPECT_EQ(Common::RotateLeft(0xF1F1F1F1, 1), 0xE3E3E3E3); + EXPECT_EQ(Common::RotateLeft(0xF1F1F1F1, 2), 0xC7C7C7C7); + EXPECT_EQ(Common::RotateLeft(0xF1F1F1F1, 3), 0x8F8F8F8F); + EXPECT_EQ(Common::RotateLeft(0xF1F1F1F1, 4), 0x1F1F1F1F); + EXPECT_EQ(Common::RotateLeft(0xF1F1F1F1F1F1F1F1, 1), 0xE3E3E3E3E3E3E3E3); + EXPECT_EQ(Common::RotateLeft(0xF1F1F1F1F1F1F1F1, 2), 0xC7C7C7C7C7C7C7C7); + EXPECT_EQ(Common::RotateLeft(0xF1F1F1F1F1F1F1F1, 3), 0x8F8F8F8F8F8F8F8F); + EXPECT_EQ(Common::RotateLeft(0xF1F1F1F1F1F1F1F1, 4), 0x1F1F1F1F1F1F1F1F); +} + +TEST(BitUtils, RotateRight) +{ + EXPECT_EQ(Common::RotateRight(0xF0F0F0F0, 0), 0xF0F0F0F0); + EXPECT_EQ(Common::RotateRight(0xF0F0F0F0, 4), 0x0F0F0F0F); + EXPECT_EQ(Common::RotateRight(0xF0F0F0F0, 8), 0xF0F0F0F0); + EXPECT_EQ(Common::RotateRight(0xF0F0F0F0F0F0F0F0, 0), 0xF0F0F0F0F0F0F0F0); + EXPECT_EQ(Common::RotateRight(0xF0F0F0F0F0F0F0F0, 4), 0x0F0F0F0F0F0F0F0F); + EXPECT_EQ(Common::RotateRight(0xF0F0F0F0F0F0F0F0, 8), 0xF0F0F0F0F0F0F0F0); + + EXPECT_EQ(Common::RotateRight(0xF1F1F1F1, 1), 0xF8F8F8F8); + EXPECT_EQ(Common::RotateRight(0xF1F1F1F1, 2), 0x7C7C7C7C); + EXPECT_EQ(Common::RotateRight(0xF1F1F1F1, 3), 0x3E3E3E3E); + EXPECT_EQ(Common::RotateRight(0xF1F1F1F1, 4), 0x1F1F1F1F); + EXPECT_EQ(Common::RotateRight(0xF1F1F1F1F1F1F1F1, 1), 0xF8F8F8F8F8F8F8F8); + EXPECT_EQ(Common::RotateRight(0xF1F1F1F1F1F1F1F1, 2), 0x7C7C7C7C7C7C7C7C); + EXPECT_EQ(Common::RotateRight(0xF1F1F1F1F1F1F1F1, 3), 0x3E3E3E3E3E3E3E3E); + EXPECT_EQ(Common::RotateRight(0xF1F1F1F1F1F1F1F1, 4), 0x1F1F1F1F1F1F1F1F); +} + TEST(BitUtils, IsValidLowMask) { EXPECT_TRUE(Common::IsValidLowMask(0b0u)); |