diff options
Diffstat (limited to 'unittests/Support/ScaledNumberTest.cpp')
| -rw-r--r-- | unittests/Support/ScaledNumberTest.cpp | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/unittests/Support/ScaledNumberTest.cpp b/unittests/Support/ScaledNumberTest.cpp index d8d6e310ff9fc..2f38b2a40fb8f 100644 --- a/unittests/Support/ScaledNumberTest.cpp +++ b/unittests/Support/ScaledNumberTest.cpp @@ -155,7 +155,7 @@ TEST(ScaledNumberHelpersTest, getQuotient) { EXPECT_EQ(SP32(0xaaaaaaab, -33), getQuotient32(1, 3)); EXPECT_EQ(SP32(0xd5555555, -31), getQuotient32(5, 3)); - // 64-bit division is hard to test, since divide64 doesn't canonicalized its + // 64-bit division is hard to test, since divide64 doesn't canonicalize its // output. However, this is the algorithm the implementation uses: // // - Shift divisor right. @@ -532,4 +532,33 @@ TEST(ScaledNumberHelpersTest, getDifference) { EXPECT_EQ(SP64(0, 0), getDifference64(1, -64, 1, -1)); } +TEST(ScaledNumberHelpersTest, arithmeticOperators) { + EXPECT_EQ(ScaledNumber<uint32_t>(10, 0), + ScaledNumber<uint32_t>(1, 3) + ScaledNumber<uint32_t>(1, 1)); + EXPECT_EQ(ScaledNumber<uint32_t>(6, 0), + ScaledNumber<uint32_t>(1, 3) - ScaledNumber<uint32_t>(1, 1)); + EXPECT_EQ(ScaledNumber<uint32_t>(2, 3), + ScaledNumber<uint32_t>(1, 3) * ScaledNumber<uint32_t>(1, 1)); + EXPECT_EQ(ScaledNumber<uint32_t>(1, 2), + ScaledNumber<uint32_t>(1, 3) / ScaledNumber<uint32_t>(1, 1)); + EXPECT_EQ(ScaledNumber<uint32_t>(1, 2), ScaledNumber<uint32_t>(1, 3) >> 1); + EXPECT_EQ(ScaledNumber<uint32_t>(1, 4), ScaledNumber<uint32_t>(1, 3) << 1); + + EXPECT_EQ(ScaledNumber<uint64_t>(10, 0), + ScaledNumber<uint64_t>(1, 3) + ScaledNumber<uint64_t>(1, 1)); + EXPECT_EQ(ScaledNumber<uint64_t>(6, 0), + ScaledNumber<uint64_t>(1, 3) - ScaledNumber<uint64_t>(1, 1)); + EXPECT_EQ(ScaledNumber<uint64_t>(2, 3), + ScaledNumber<uint64_t>(1, 3) * ScaledNumber<uint64_t>(1, 1)); + EXPECT_EQ(ScaledNumber<uint64_t>(1, 2), + ScaledNumber<uint64_t>(1, 3) / ScaledNumber<uint64_t>(1, 1)); + EXPECT_EQ(ScaledNumber<uint64_t>(1, 2), ScaledNumber<uint64_t>(1, 3) >> 1); + EXPECT_EQ(ScaledNumber<uint64_t>(1, 4), ScaledNumber<uint64_t>(1, 3) << 1); +} + +TEST(ScaledNumberHelpersTest, toIntBug) { + ScaledNumber<uint32_t> n(1, 0); + EXPECT_EQ(1u, (n * n).toInt<uint32_t>()); +} + } // end namespace |