core::arch::x86_64

Function _mm256_mask_popcnt_epi64

source 
pub unsafe fn _mm256_mask_popcnt_epi64(
    src: __m256i,
    k: __mmask8,
    a: __m256i,
) -> __m256i
🔬This is a nightly-only experimental API. (stdarch_x86_avx512 #111137)
Available on (x86 or x86-64) and target feature avx512vpopcntdq,avx512vl and x86-64 only.
Expand description

For each packed 64-bit integer maps the value to the number of logical 1 bits.

Uses the writemask in k - elements are copied from src if the corresponding mask bit is not set. Otherwise the computation result is written into the result.

Intel’s documentation