# Function core::arch::aarch64::_cls_u32
[−][src]

    pub unsafe fn _cls_u32(x: u32) -> u32

🔬 This is a nightly-only experimental API. (`stdsimd` #48556)
This is supported on (non-crate feature `miri-test-libstd` or `test` or `doctest`) and AArch64 only.
Expand description

Counts the leading most significant bits set.

When all bits of the operand are set it returns the size of the operand in bits.