_mm_mask_popcnt_epi64 in core::arch::x86_64 - Rust
Description: For each packed 64-bit integer maps the value to the number of logical 1 bits.

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## _mm_mask_popcnt_epi64

# Function _mm_mask_popcnt_epi64

1.89.0 (const: unstable) · Source

    pub fn _mm_mask_popcnt_epi64(src: __m128i, k: __mmask8, a: __m128i) -> __m128i

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 copied from src if the corresponding mask bit is not set. Otherwise the computation result is written into the result.

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