Function core::intrinsics::ctpop

const: 1.40.0 · source · [−]
pub extern "rust-intrinsic" fn ctpop<T: Copy>(x: T) -> T
🔬 This is a nightly-only experimental API. (core_intrinsics)
Expand description

Returns the number of bits set in an integer type T

Note that, unlike most intrinsics, this is safe to call; it does not require an unsafe block. Therefore, implementations must not require the user to uphold any safety invariants.

The stabilized versions of this intrinsic are available on the integer primitives via the count_ones method. For example, u32::count_ones

This documentation is an old archive. Please see https://rust.docs.kernel.org instead.