Function core::arch::x86_64::_mm_maskz_lzcnt_epi64

pub unsafe fn _mm_maskz_lzcnt_epi64(k: __mmask8, a: __m128i) -> __m128i

🔬 This is a nightly-only experimental API. (stdsimd #48556)

Available on x86-64 and target feature avx512cd,avx512vl only.

Counts the number of leading zero bits in each packed 64-bit integer in a, and store the results in dst using zeromask k (elements are zeroed out when the corresponding mask bit is not set).

Intel’s documentation