Function _mm256_cmpgt_epi64_mask

#[target_feature(enable = "avx512f", enable = "avx512vl")]
pub const fn _mm256_cmpgt_epi64_mask(a: __m256i, b: __m256i) -> __mmask8

Compare packed signed 64-bit integers in a and b for greater-than, and store the results in mask vector k.

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