Function _mm512_mask_cvtpd_ph 

pub fn _mm512_mask_cvtpd_ph(src: __m128h, k: __mmask8, a: __m512d) -> __m128h

Available on x86 and target feature avx512fp16 only.

Convert packed double-precision (64-bit) floating-point elements 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).

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