diff options
Diffstat (limited to 'llvm/unittests/ADT/APIntTest.cpp')
| -rw-r--r-- | llvm/unittests/ADT/APIntTest.cpp | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/llvm/unittests/ADT/APIntTest.cpp b/llvm/unittests/ADT/APIntTest.cpp index 3b909f8..2fe59f0 100644 --- a/llvm/unittests/ADT/APIntTest.cpp +++ b/llvm/unittests/ADT/APIntTest.cpp @@ -2497,6 +2497,40 @@ TEST(APIntTest, clearLowBits) { EXPECT_EQ(16u, i32hi16.popcount()); } +TEST(APIntTest, AbsDiff) { + using APIntOps::absdiff; + + APInt MaxU1(1, 1, false); + APInt MinU1(1, 0, false); + EXPECT_EQ(1u, absdiff(MaxU1, MinU1).getZExtValue()); + EXPECT_EQ(1u, absdiff(MinU1, MaxU1).getZExtValue()); + + APInt MaxU4(4, 15, false); + APInt MinU4(4, 0, false); + EXPECT_EQ(15u, absdiff(MaxU4, MinU4).getZExtValue()); + EXPECT_EQ(15u, absdiff(MinU4, MaxU4).getZExtValue()); + + APInt MaxS8(8, 127, true); + APInt MinS8(8, -128, true); + EXPECT_EQ(1u, absdiff(MaxS8, MinS8).getZExtValue()); + EXPECT_EQ(1u, absdiff(MinS8, MaxS8).getZExtValue()); + + APInt MaxU16(16, 65535, false); + APInt MinU16(16, 0, false); + EXPECT_EQ(65535u, absdiff(MaxU16, MinU16).getZExtValue()); + EXPECT_EQ(65535u, absdiff(MinU16, MaxU16).getZExtValue()); + + APInt MaxS16(16, 32767, true); + APInt MinS16(16, -32768, true); + APInt ZeroS16(16, 0, true); + EXPECT_EQ(1u, absdiff(MaxS16, MinS16).getZExtValue()); + EXPECT_EQ(1u, absdiff(MinS16, MaxS16).getZExtValue()); + EXPECT_EQ(32768u, absdiff(ZeroS16, MinS16)); + EXPECT_EQ(32768u, absdiff(MinS16, ZeroS16)); + EXPECT_EQ(32767u, absdiff(ZeroS16, MaxS16)); + EXPECT_EQ(32767u, absdiff(MaxS16, ZeroS16)); +} + TEST(APIntTest, GCD) { using APIntOps::GreatestCommonDivisor; |