Function _mm_mask_cvtsh_sd
#[target_feature(enable = "avx512fp16")]
pub fn _mm_mask_cvtsh_sd(src: __m128d, k: __mmask8, a: __m128d, b: __m128h) -> __m128dConvert the lower half-precision (16-bit) floating-point element in b to a double-precision (64-bit) floating-point element, store the result in the lower element of dst using writemask k (the element is copied from src to dst when mask bit 0 is not set), and copy the upper element from a to the upper element of dst.