# Function _mm256_maskz_dbsad_epu8

1.89.0 · Source

    pub fn _mm256_maskz_dbsad_epu8(
        k: __mmask16,
        a: __m256i,
        b: __m256i,
        const IMM8: i32,
    ) -> __m256i

Available on (x86 or x86-64) and target feature `avx512bw` and target feature `avx512vl` and x86-64 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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