diff options
Diffstat (limited to 'unittests')
| -rw-r--r-- | unittests/Support/ScaledNumberTest.cpp | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/unittests/Support/ScaledNumberTest.cpp b/unittests/Support/ScaledNumberTest.cpp index 6f7cc2a14b..db8101cc26 100644 --- a/unittests/Support/ScaledNumberTest.cpp +++ b/unittests/Support/ScaledNumberTest.cpp @@ -191,4 +191,98 @@ TEST(PositiveFloatTest, Divide) { EXPECT_EQ(SP64(0xd555555555555555, -63), getQuotient64(5, 3)); } +TEST(ScaledNumbersHelpersTest, getLg) { + EXPECT_EQ(0, getLg(UINT32_C(1), 0)); + EXPECT_EQ(1, getLg(UINT32_C(1), 1)); + EXPECT_EQ(1, getLg(UINT32_C(2), 0)); + EXPECT_EQ(3, getLg(UINT32_C(1), 3)); + EXPECT_EQ(3, getLg(UINT32_C(7), 0)); + EXPECT_EQ(3, getLg(UINT32_C(8), 0)); + EXPECT_EQ(3, getLg(UINT32_C(9), 0)); + EXPECT_EQ(3, getLg(UINT32_C(64), -3)); + EXPECT_EQ(31, getLg((UINT32_MAX >> 1) + 2, 0)); + EXPECT_EQ(32, getLg(UINT32_MAX, 0)); + EXPECT_EQ(-1, getLg(UINT32_C(1), -1)); + EXPECT_EQ(-1, getLg(UINT32_C(2), -2)); + EXPECT_EQ(INT32_MIN, getLg(UINT32_C(0), -1)); + EXPECT_EQ(INT32_MIN, getLg(UINT32_C(0), 0)); + EXPECT_EQ(INT32_MIN, getLg(UINT32_C(0), 1)); + + EXPECT_EQ(0, getLg(UINT64_C(1), 0)); + EXPECT_EQ(1, getLg(UINT64_C(1), 1)); + EXPECT_EQ(1, getLg(UINT64_C(2), 0)); + EXPECT_EQ(3, getLg(UINT64_C(1), 3)); + EXPECT_EQ(3, getLg(UINT64_C(7), 0)); + EXPECT_EQ(3, getLg(UINT64_C(8), 0)); + EXPECT_EQ(3, getLg(UINT64_C(9), 0)); + EXPECT_EQ(3, getLg(UINT64_C(64), -3)); + EXPECT_EQ(63, getLg((UINT64_MAX >> 1) + 2, 0)); + EXPECT_EQ(64, getLg(UINT64_MAX, 0)); + EXPECT_EQ(-1, getLg(UINT64_C(1), -1)); + EXPECT_EQ(-1, getLg(UINT64_C(2), -2)); + EXPECT_EQ(INT32_MIN, getLg(UINT64_C(0), -1)); + EXPECT_EQ(INT32_MIN, getLg(UINT64_C(0), 0)); + EXPECT_EQ(INT32_MIN, getLg(UINT64_C(0), 1)); +} + +TEST(ScaledNumbersHelpersTest, getLgFloor) { + EXPECT_EQ(0, getLgFloor(UINT32_C(1), 0)); + EXPECT_EQ(1, getLgFloor(UINT32_C(1), 1)); + EXPECT_EQ(1, getLgFloor(UINT32_C(2), 0)); + EXPECT_EQ(2, getLgFloor(UINT32_C(7), 0)); + EXPECT_EQ(3, getLgFloor(UINT32_C(1), 3)); + EXPECT_EQ(3, getLgFloor(UINT32_C(8), 0)); + EXPECT_EQ(3, getLgFloor(UINT32_C(9), 0)); + EXPECT_EQ(3, getLgFloor(UINT32_C(64), -3)); + EXPECT_EQ(31, getLgFloor((UINT32_MAX >> 1) + 2, 0)); + EXPECT_EQ(31, getLgFloor(UINT32_MAX, 0)); + EXPECT_EQ(INT32_MIN, getLgFloor(UINT32_C(0), -1)); + EXPECT_EQ(INT32_MIN, getLgFloor(UINT32_C(0), 0)); + EXPECT_EQ(INT32_MIN, getLgFloor(UINT32_C(0), 1)); + + EXPECT_EQ(0, getLgFloor(UINT64_C(1), 0)); + EXPECT_EQ(1, getLgFloor(UINT64_C(1), 1)); + EXPECT_EQ(1, getLgFloor(UINT64_C(2), 0)); + EXPECT_EQ(2, getLgFloor(UINT64_C(7), 0)); + EXPECT_EQ(3, getLgFloor(UINT64_C(1), 3)); + EXPECT_EQ(3, getLgFloor(UINT64_C(8), 0)); + EXPECT_EQ(3, getLgFloor(UINT64_C(9), 0)); + EXPECT_EQ(3, getLgFloor(UINT64_C(64), -3)); + EXPECT_EQ(63, getLgFloor((UINT64_MAX >> 1) + 2, 0)); + EXPECT_EQ(63, getLgFloor(UINT64_MAX, 0)); + EXPECT_EQ(INT32_MIN, getLgFloor(UINT64_C(0), -1)); + EXPECT_EQ(INT32_MIN, getLgFloor(UINT64_C(0), 0)); + EXPECT_EQ(INT32_MIN, getLgFloor(UINT64_C(0), 1)); +} + +TEST(ScaledNumbersHelpersTest, getLgCeiling) { + EXPECT_EQ(0, getLgCeiling(UINT32_C(1), 0)); + EXPECT_EQ(1, getLgCeiling(UINT32_C(1), 1)); + EXPECT_EQ(1, getLgCeiling(UINT32_C(2), 0)); + EXPECT_EQ(3, getLgCeiling(UINT32_C(1), 3)); + EXPECT_EQ(3, getLgCeiling(UINT32_C(7), 0)); + EXPECT_EQ(3, getLgCeiling(UINT32_C(8), 0)); + EXPECT_EQ(3, getLgCeiling(UINT32_C(64), -3)); + EXPECT_EQ(4, getLgCeiling(UINT32_C(9), 0)); + EXPECT_EQ(32, getLgCeiling(UINT32_MAX, 0)); + EXPECT_EQ(32, getLgCeiling((UINT32_MAX >> 1) + 2, 0)); + EXPECT_EQ(INT32_MIN, getLgCeiling(UINT32_C(0), -1)); + EXPECT_EQ(INT32_MIN, getLgCeiling(UINT32_C(0), 0)); + EXPECT_EQ(INT32_MIN, getLgCeiling(UINT32_C(0), 1)); + + EXPECT_EQ(0, getLgCeiling(UINT64_C(1), 0)); + EXPECT_EQ(1, getLgCeiling(UINT64_C(1), 1)); + EXPECT_EQ(1, getLgCeiling(UINT64_C(2), 0)); + EXPECT_EQ(3, getLgCeiling(UINT64_C(1), 3)); + EXPECT_EQ(3, getLgCeiling(UINT64_C(7), 0)); + EXPECT_EQ(3, getLgCeiling(UINT64_C(8), 0)); + EXPECT_EQ(3, getLgCeiling(UINT64_C(64), -3)); + EXPECT_EQ(4, getLgCeiling(UINT64_C(9), 0)); + EXPECT_EQ(64, getLgCeiling((UINT64_MAX >> 1) + 2, 0)); + EXPECT_EQ(64, getLgCeiling(UINT64_MAX, 0)); + EXPECT_EQ(INT32_MIN, getLgCeiling(UINT64_C(0), -1)); + EXPECT_EQ(INT32_MIN, getLgCeiling(UINT64_C(0), 0)); + EXPECT_EQ(INT32_MIN, getLgCeiling(UINT64_C(0), 1)); +} + } // end namespace |