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Tests/AK: Add tests for integral log2

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Tim Ledbetter 2024-05-13 18:57:38 +01:00 committed by Andreas Kling
parent d0d81e470e
commit 817bfef3aa
1 changed files with 18 additions and 0 deletions
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18
Tests/AK/TestIntegerMath.cpp
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@ -65,6 +65,24 @@ TEST_CASE(exp2)
EXPECT_EQ(AK::exp2<u64>(63), 9223372036854775808ull);
}
TEST_CASE(log2)
{
EXPECT_EQ(AK::log2<u64>(0), 0ull);
EXPECT_EQ(AK::log2<u64>(1), 0ull);
EXPECT_EQ(AK::log2<i8>(64), 6);
EXPECT_EQ(AK::log2<u8>(128), 7);
EXPECT_EQ(AK::log2<u16>(512), 9);
EXPECT_EQ(AK::log2<i16>(16384), 14);
EXPECT_EQ(AK::log2<u16>(32768), 15);
EXPECT_EQ(AK::log2<i32>(131072), 17);
EXPECT_EQ(AK::log2<i32>(1073741824), 30);
EXPECT_EQ(AK::log2<u32>(2147483648), 31u);
EXPECT_EQ(AK::log2<i64>(4294967296), 32);
EXPECT_EQ(AK::log2<i64>(8589934592), 33);
EXPECT_EQ(AK::log2<i64>(4611686018427387904), 62);
EXPECT_EQ(AK::log2<u64>(9223372036854775808ull), 63ull);
}
TEST_CASE(ceil_log2)
{
EXPECT_EQ(AK::ceil_log2<u64>(0), 0ull);