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## _mm512_mask_mullox_epi64

# Function _mm512_mask_mullox_epi64

1.89.0 (const: unstable) · Source

    pub fn _mm512_mask_mullox_epi64(
        src: __m512i,
        k: __mmask8,
        a: __m512i,
        b: __m512i,
    ) -> __m512i

Available on x86 and (x86 or x86-64) and target feature `avx512f` only.
Expand description

Multiplies elements in packed 64-bit integer vectors a and b together, storing the lower 64 bits of the result in dst using writemask k (elements are copied from src when the corresponding mask bit is not set).

Intel’s documentation

This intrinsic generates a sequence of instructions, which may perform worse than a native instruction. Consider the performance impact of this intrinsic.