_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.
Keywords: rust, rustlang, rust-lang, _mm_mask_popcnt_epi64

# Function core::arch::x86_64::_mm_mask_popcnt_epi64
[−][src]

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

🔬 This is a nightly-only experimental API. (`stdsimd` #48556)
This is supported on x86-64 and target feature `avx512vpopcntdq,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.

Intel’s documentation