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author | Colin Cross <ccross@android.com> | 2022-04-13 02:50:39 +0000 |
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committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | 2022-04-13 02:50:39 +0000 |
commit | d3dfe74c4025bacd9741d761815a8cb059e49c68 (patch) | |
tree | 2ce94d7f0804ccb77d1fa9b2a1bca00eecdff1e2 /third_party/abseil-cpp/absl/numeric/int128_test.cc | |
parent | f60eaea2240ba9e1c508e8e0c91d39ee9fc47be5 (diff) | |
parent | 7563023510bf04108a954596ea9393a4c11ac279 (diff) | |
download | webrtc-aml_tz4_331012000.tar.gz |
Merge changes I0ab600cd,I1e74c64a am: 798f3afdf6 am: 2f9c4b2c3b am: a9167328fc am: 7563023510aml_tz4_332714070aml_tz4_332714050aml_tz4_332714010aml_tz4_331910000aml_tz4_331314030aml_tz4_331314020aml_tz4_331314010aml_tz4_331012050aml_tz4_331012040aml_tz4_331012000android13-mainline-tzdata4-releaseaml_tz4_332714010
Original change: https://android-review.googlesource.com/c/platform/external/webrtc/+/2062410
Change-Id: I5558645b9d1d98de28e58bd4a9a8aa9d7d0c49da
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
Diffstat (limited to 'third_party/abseil-cpp/absl/numeric/int128_test.cc')
-rw-r--r-- | third_party/abseil-cpp/absl/numeric/int128_test.cc | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/third_party/abseil-cpp/absl/numeric/int128_test.cc b/third_party/abseil-cpp/absl/numeric/int128_test.cc index bc86c714ac..dd9425d77a 100644 --- a/third_party/abseil-cpp/absl/numeric/int128_test.cc +++ b/third_party/abseil-cpp/absl/numeric/int128_test.cc @@ -226,6 +226,11 @@ TEST(Uint128, AllTests) { EXPECT_EQ(test >>= 1, one); EXPECT_EQ(test <<= 1, two); + EXPECT_EQ(big, +big); + EXPECT_EQ(two, +two); + EXPECT_EQ(absl::Uint128Max(), +absl::Uint128Max()); + EXPECT_EQ(zero, +zero); + EXPECT_EQ(big, -(-big)); EXPECT_EQ(two, -((-one) - 1)); EXPECT_EQ(absl::Uint128Max(), -one); @@ -234,6 +239,24 @@ TEST(Uint128, AllTests) { EXPECT_EQ(absl::Uint128Max(), absl::kuint128max); } +TEST(Int128, RightShiftOfNegativeNumbers) { + absl::int128 minus_six = -6; + absl::int128 minus_three = -3; + absl::int128 minus_two = -2; + absl::int128 minus_one = -1; + if ((-6 >> 1) == -3) { + // Right shift is arithmetic (sign propagates) + EXPECT_EQ(minus_six >> 1, minus_three); + EXPECT_EQ(minus_six >> 2, minus_two); + EXPECT_EQ(minus_six >> 65, minus_one); + } else { + // Right shift is logical (zeros shifted in at MSB) + EXPECT_EQ(minus_six >> 1, absl::int128(absl::uint128(minus_six) >> 1)); + EXPECT_EQ(minus_six >> 2, absl::int128(absl::uint128(minus_six) >> 2)); + EXPECT_EQ(minus_six >> 65, absl::int128(absl::uint128(minus_six) >> 65)); + } +} + TEST(Uint128, ConversionTests) { EXPECT_TRUE(absl::MakeUint128(1, 0)); @@ -769,6 +792,19 @@ TEST(Int128, ComparisonTest) { } } +TEST(Int128, UnaryPlusTest) { + int64_t values64[] = {0, 1, 12345, 0x4000000000000000, + std::numeric_limits<int64_t>::max()}; + for (int64_t value : values64) { + SCOPED_TRACE(::testing::Message() << "value = " << value); + + EXPECT_EQ(absl::int128(value), +absl::int128(value)); + EXPECT_EQ(absl::int128(-value), +absl::int128(-value)); + EXPECT_EQ(absl::MakeInt128(value, 0), +absl::MakeInt128(value, 0)); + EXPECT_EQ(absl::MakeInt128(-value, 0), +absl::MakeInt128(-value, 0)); + } +} + TEST(Int128, UnaryNegationTest) { int64_t values64[] = {0, 1, 12345, 0x4000000000000000, std::numeric_limits<int64_t>::max()}; |