Function _mm_mul_sh 

pub fn _mm_mul_sh(a: __m128h, b: __m128h) -> __m128h

Available on x86 and target feature avx512fp16 only.

Multiply the lower half-precision (16-bit) floating-point elements in a and b, store the result in the lower element of dst, and copy the upper 7 packed elements from a to the upper elements of dst.

Intel’s documentation