Function kvarn::prelude::compact_str::core::arch::x86_64::_lzcnt_u64
1.27.0 · source · pub unsafe fn _lzcnt_u64(x: u64) -> u64
Available on non-crate feature
miri-test-libstd
and x86-64 only.Expand description
Counts the leading most significant zero bits.
When the operand is zero, it returns its size in bits.