## _mm256_maskz_popcnt_epi64

# Function _mm256_maskz_popcnt_epi64

1.89.0 · Source

    pub fn _mm256_maskz_popcnt_epi64(k: __mmask8, a: __m256i) -> __m256i

Available on x86-64 and target feature `avx512vpopcntdq` and target feature `avx512vl` 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 zeroed in the result if the corresponding mask bit is not set. Otherwise the computation result is written into the result.

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