EXPECT_EQ(1u, CountLeadingZeros_64(1LL << 62));
for (unsigned i = 0; i <= 62; ++i) {
EXPECT_EQ(63 - i, CountLeadingZeros_64(1LL << i));
EXPECT_EQ(1u, CountLeadingZeros_64(1LL << 62));
for (unsigned i = 0; i <= 62; ++i) {
EXPECT_EQ(63 - i, CountLeadingZeros_64(1LL << i));