# Function core::arch::x86_64::_mm512_testn_epi8_mask[−][src]

    pub unsafe fn _mm512_testn_epi8_mask(a: __m512i, b: __m512i) -> __mmask64

🔬 This is a nightly-only experimental API. (`stdsimd` #48556)
This is supported on x86-64 and target feature `avx512bw` only.

Compute the bitwise NAND of packed 8-bit integers in a and b, producing intermediate 8-bit values, and set the corresponding bit in result mask k if the intermediate value is zero.

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