# Function _mm256_testn_epi8_mask

1.89.0 · Source

    pub fn _mm256_testn_epi8_mask(a: __m256i, b: __m256i) -> __mmask32

Available on (x86 or x86-64) and target feature `avx512bw` and target feature `avx512vl` and x86-64 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 if the intermediate value is zero.

Intel’s documentation