pub unsafe fn _mm512_cvtepi8_epi16(a: __m256i) -> __m512i
🔬 This is a nightly-only experimental API. (stdsimd)
This is supported on x86-64 and target feature avx512bw only.
Expand description

Sign extend packed 8-bit integers in a to packed 16-bit integers, and store the results in dst.

Intel’s documentation