Function _mm_mask_rcp_ph 

pub fn _mm_mask_rcp_ph(src: __m128h, k: __mmask8, a: __m128h) -> __m128h

Available on x86 and target feature avx512fp16 and target feature avx512vl only.

Compute the approximate reciprocal of packed 16-bit floating-point elements in a and stores the results in dst using writemask k (elements are copied from src when the corresponding mask bit is not set). The maximum relative error for this approximation is less than 1.5*2^-12.

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