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## _mm512_maskz_dbsad_epu8

# Function _mm512_maskz_dbsad_epu8

1.89.0 · Source

    pub fn _mm512_maskz_dbsad_epu8(
        k: __mmask32,
        a: __m512i,
        b: __m512i,
        const IMM8: i32,
    ) -> __m512i

Available on x86-64 and target feature `avx512bw` only.
Expand description

Compute the sum of absolute differences (SADs) of quadruplets of unsigned 8-bit integers in a compared to those in b, and store the 16-bit results in dst using zeromask k (elements are zeroed out when the corresponding mask bit is not set). Four SADs are performed on four 8-bit quadruplets for each 64-bit lane. The first two SADs use the lower 8-bit quadruplet of the lane from a, and the last two SADs use the uppper 8-bit quadruplet of the lane from a. Quadruplets from b are selected from within 128-bit lanes according to the control in imm8, and each SAD in each 64-bit lane uses the selected quadruplet at 8-bit offsets.

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