pub unsafe fn _mm512_mask_testn_epi8_mask(k: u64, a: __m512i, b: __m512i) -> u64
🔬 This is a nightly-only experimental API. (stdsimd)
This is supported on x86-64 and target feature avx512bw only.
Expand description

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 (subject to writemask k) if the intermediate value is zero.

Intel’s documentation