Function _mm256_cmpeq_epi64_mask

pub unsafe fn _mm256_cmpeq_epi64_mask(a: __m256i, b: __m256i) -> __mmask8

🔬This is a nightly-only experimental API. (stdarch_x86_avx512 #111137)

Available on (x86 or x86-64) and target feature avx512f,avx512vl and x86-64 only.

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

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