diff options
Diffstat (limited to 'deps/v8/test/unittests/base/bits-unittest.cc')
| -rw-r--r-- | deps/v8/test/unittests/base/bits-unittest.cc | 109 |
1 files changed, 71 insertions, 38 deletions
diff --git a/deps/v8/test/unittests/base/bits-unittest.cc b/deps/v8/test/unittests/base/bits-unittest.cc index 45fb921797..485dddf529 100644 --- a/deps/v8/test/unittests/base/bits-unittest.cc +++ b/deps/v8/test/unittests/base/bits-unittest.cc @@ -18,70 +18,103 @@ namespace v8 { namespace base { namespace bits { -TEST(Bits, CountPopulation32) { - EXPECT_EQ(0u, CountPopulation32(0)); - EXPECT_EQ(1u, CountPopulation32(1)); - EXPECT_EQ(8u, CountPopulation32(0x11111111)); - EXPECT_EQ(16u, CountPopulation32(0xf0f0f0f0)); - EXPECT_EQ(24u, CountPopulation32(0xfff0f0ff)); - EXPECT_EQ(32u, CountPopulation32(0xffffffff)); +TEST(Bits, CountPopulation16) { + EXPECT_EQ(0u, CountPopulation(uint16_t{0})); + EXPECT_EQ(1u, CountPopulation(uint16_t{1})); + EXPECT_EQ(4u, CountPopulation(uint16_t{0x1111})); + EXPECT_EQ(8u, CountPopulation(uint16_t{0xf0f0})); + EXPECT_EQ(12u, CountPopulation(uint16_t{0xf0ff})); + EXPECT_EQ(16u, CountPopulation(uint16_t{0xffff})); } +TEST(Bits, CountPopulation32) { + EXPECT_EQ(0u, CountPopulation(uint32_t{0})); + EXPECT_EQ(1u, CountPopulation(uint32_t{1})); + EXPECT_EQ(8u, CountPopulation(uint32_t{0x11111111})); + EXPECT_EQ(16u, CountPopulation(uint32_t{0xf0f0f0f0})); + EXPECT_EQ(24u, CountPopulation(uint32_t{0xfff0f0ff})); + EXPECT_EQ(32u, CountPopulation(uint32_t{0xffffffff})); +} TEST(Bits, CountPopulation64) { - EXPECT_EQ(0u, CountPopulation64(0)); - EXPECT_EQ(1u, CountPopulation64(1)); - EXPECT_EQ(2u, CountPopulation64(0x8000000000000001)); - EXPECT_EQ(8u, CountPopulation64(0x11111111)); - EXPECT_EQ(16u, CountPopulation64(0xf0f0f0f0)); - EXPECT_EQ(24u, CountPopulation64(0xfff0f0ff)); - EXPECT_EQ(32u, CountPopulation64(0xffffffff)); - EXPECT_EQ(16u, CountPopulation64(0x1111111111111111)); - EXPECT_EQ(32u, CountPopulation64(0xf0f0f0f0f0f0f0f0)); - EXPECT_EQ(48u, CountPopulation64(0xfff0f0fffff0f0ff)); - EXPECT_EQ(64u, CountPopulation64(0xffffffffffffffff)); + EXPECT_EQ(0u, CountPopulation(uint64_t{0})); + EXPECT_EQ(1u, CountPopulation(uint64_t{1})); + EXPECT_EQ(2u, CountPopulation(uint64_t{0x8000000000000001})); + EXPECT_EQ(8u, CountPopulation(uint64_t{0x11111111})); + EXPECT_EQ(16u, CountPopulation(uint64_t{0xf0f0f0f0})); + EXPECT_EQ(24u, CountPopulation(uint64_t{0xfff0f0ff})); + EXPECT_EQ(32u, CountPopulation(uint64_t{0xffffffff})); + EXPECT_EQ(16u, CountPopulation(uint64_t{0x1111111111111111})); + EXPECT_EQ(32u, CountPopulation(uint64_t{0xf0f0f0f0f0f0f0f0})); + EXPECT_EQ(48u, CountPopulation(uint64_t{0xfff0f0fffff0f0ff})); + EXPECT_EQ(64u, CountPopulation(uint64_t{0xffffffffffffffff})); } +TEST(Bits, CountLeadingZeros16) { + EXPECT_EQ(16u, CountLeadingZeros(uint16_t{0})); + EXPECT_EQ(15u, CountLeadingZeros(uint16_t{1})); + TRACED_FORRANGE(uint16_t, shift, 0, 15) { + EXPECT_EQ(15u - shift, + CountLeadingZeros(static_cast<uint16_t>(1 << shift))); + } + EXPECT_EQ(4u, CountLeadingZeros(uint16_t{0x0f0f})); +} TEST(Bits, CountLeadingZeros32) { - EXPECT_EQ(32u, CountLeadingZeros32(0)); - EXPECT_EQ(31u, CountLeadingZeros32(1)); + EXPECT_EQ(32u, CountLeadingZeros(uint32_t{0})); + EXPECT_EQ(31u, CountLeadingZeros(uint32_t{1})); TRACED_FORRANGE(uint32_t, shift, 0, 31) { - EXPECT_EQ(31u - shift, CountLeadingZeros32(1u << shift)); + EXPECT_EQ(31u - shift, CountLeadingZeros(uint32_t{1} << shift)); } - EXPECT_EQ(4u, CountLeadingZeros32(0x0f0f0f0f)); + EXPECT_EQ(4u, CountLeadingZeros(uint32_t{0x0f0f0f0f})); } - TEST(Bits, CountLeadingZeros64) { - EXPECT_EQ(64u, CountLeadingZeros64(0)); - EXPECT_EQ(63u, CountLeadingZeros64(1)); + EXPECT_EQ(64u, CountLeadingZeros(uint64_t{0})); + EXPECT_EQ(63u, CountLeadingZeros(uint64_t{1})); TRACED_FORRANGE(uint32_t, shift, 0, 63) { - EXPECT_EQ(63u - shift, CountLeadingZeros64(V8_UINT64_C(1) << shift)); + EXPECT_EQ(63u - shift, CountLeadingZeros(uint64_t{1} << shift)); } - EXPECT_EQ(36u, CountLeadingZeros64(0x0f0f0f0f)); - EXPECT_EQ(4u, CountLeadingZeros64(0x0f0f0f0f00000000)); + EXPECT_EQ(36u, CountLeadingZeros(uint64_t{0x0f0f0f0f})); + EXPECT_EQ(4u, CountLeadingZeros(uint64_t{0x0f0f0f0f00000000})); } +TEST(Bits, CountTrailingZeros16) { + EXPECT_EQ(16u, CountTrailingZeros(uint16_t{0})); + EXPECT_EQ(15u, CountTrailingZeros(uint16_t{0x8000})); + TRACED_FORRANGE(uint16_t, shift, 0, 15) { + EXPECT_EQ(shift, CountTrailingZeros(static_cast<uint16_t>(1 << shift))); + } + EXPECT_EQ(4u, CountTrailingZeros(uint16_t{0xf0f0u})); +} -TEST(Bits, CountTrailingZeros32) { - EXPECT_EQ(32u, CountTrailingZeros32(0)); - EXPECT_EQ(31u, CountTrailingZeros32(0x80000000)); +TEST(Bits, CountTrailingZerosu32) { + EXPECT_EQ(32u, CountTrailingZeros(uint32_t{0})); + EXPECT_EQ(31u, CountTrailingZeros(uint32_t{0x80000000})); TRACED_FORRANGE(uint32_t, shift, 0, 31) { - EXPECT_EQ(shift, CountTrailingZeros32(1u << shift)); + EXPECT_EQ(shift, CountTrailingZeros(uint32_t{1} << shift)); } - EXPECT_EQ(4u, CountTrailingZeros32(0xf0f0f0f0)); + EXPECT_EQ(4u, CountTrailingZeros(uint32_t{0xf0f0f0f0u})); } +TEST(Bits, CountTrailingZerosi32) { + EXPECT_EQ(32u, CountTrailingZeros(int32_t{0})); + TRACED_FORRANGE(uint32_t, shift, 0, 31) { + EXPECT_EQ(shift, CountTrailingZeros(int32_t{1} << shift)); + } + EXPECT_EQ(4u, CountTrailingZeros(int32_t{0x70f0f0f0u})); + EXPECT_EQ(2u, CountTrailingZeros(int32_t{-4})); + EXPECT_EQ(0u, CountTrailingZeros(int32_t{-1})); +} TEST(Bits, CountTrailingZeros64) { - EXPECT_EQ(64u, CountTrailingZeros64(0)); - EXPECT_EQ(63u, CountTrailingZeros64(0x8000000000000000)); + EXPECT_EQ(64u, CountTrailingZeros(uint64_t{0})); + EXPECT_EQ(63u, CountTrailingZeros(uint64_t{0x8000000000000000})); TRACED_FORRANGE(uint32_t, shift, 0, 63) { - EXPECT_EQ(shift, CountTrailingZeros64(V8_UINT64_C(1) << shift)); + EXPECT_EQ(shift, CountTrailingZeros(uint64_t{1} << shift)); } - EXPECT_EQ(4u, CountTrailingZeros64(0xf0f0f0f0)); - EXPECT_EQ(36u, CountTrailingZeros64(0xf0f0f0f000000000)); + EXPECT_EQ(4u, CountTrailingZeros(uint64_t{0xf0f0f0f0})); + EXPECT_EQ(36u, CountTrailingZeros(uint64_t{0xf0f0f0f000000000})); } |