Function _mm_mask_scalef_sh

#[target_feature(enable = "avx512fp16")]
pub fn _mm_mask_scalef_sh(src: __m128h, k: __mmask8, a: __m128h, b: __m128h) -> __m128h

Scale the packed single-precision (32-bit) floating-point elements in a using values from b, store the result in the lower element of dst using writemask k (the element is copied from src when mask bit 0 is not set), and copy the upper 7 packed elements from a to the upper elements of dst.

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