Function _mm256_mask_cvtepi64_ph
#[target_feature(enable = "avx512fp16", enable = "avx512vl")]
pub fn _mm256_mask_cvtepi64_ph(src: __m128h, k: __mmask8, a: __m256i) -> __m128hConvert packed signed 64-bit integers in a to packed half-precision (16-bit) floating-point elements, and store the results in dst using writemask k (elements are copied from src to dst when the corresponding mask bit is not set). The upper 64 bits of dst are zeroed out.