diff options
Diffstat (limited to 'unittests/ADT/APIntTest.cpp')
| -rw-r--r-- | unittests/ADT/APIntTest.cpp | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/unittests/ADT/APIntTest.cpp b/unittests/ADT/APIntTest.cpp index 8208af30cd..0e094ffaef 100644 --- a/unittests/ADT/APIntTest.cpp +++ b/unittests/ADT/APIntTest.cpp @@ -235,6 +235,88 @@ TEST(APIntTest, fromString) { EXPECT_EQ(APInt(32, -32), APInt(32, "-20", 16)); } +TEST(APIntTest, StringBitsNeeded2) { + EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 2)); + EXPECT_EQ(1U, APInt::getBitsNeeded( "1", 2)); + EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2)); + EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2)); + EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2)); + + EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 2)); + EXPECT_EQ(1U, APInt::getBitsNeeded( "+1", 2)); + EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2)); + EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2)); + EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2)); + + EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 2)); + EXPECT_EQ(2U, APInt::getBitsNeeded( "-1", 2)); + EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2)); + EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2)); + EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2)); +} + +TEST(APIntTest, StringBitsNeeded8) { + EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8)); + EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8)); + EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8)); + EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8)); + EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8)); + + EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8)); + EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8)); + EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8)); + EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8)); + EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8)); + + EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8)); + EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8)); + EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8)); + EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8)); + EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8)); +} + +TEST(APIntTest, StringBitsNeeded10) { + EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10)); + EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10)); + EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10)); + EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10)); + EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10)); + EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10)); + + EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10)); + EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10)); + EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10)); + EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10)); + EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10)); + + EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10)); + EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10)); + EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10)); + EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10)); + EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10)); +} + +TEST(APIntTest, StringBitsNeeded16) { + EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16)); + EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16)); + EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16)); + EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16)); + EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16)); + + EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16)); + EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16)); + EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16)); + EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16)); + EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16)); + + EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16)); + EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16)); + EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16)); + EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16)); + EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16)); +} + + #ifdef GTEST_HAS_DEATH_TEST TEST(APIntTest, StringDeath) { EXPECT_DEATH(APInt(0, "", 0), "Bitwidth too small"); |