Function _mm_fmsubadd_ph 

pub fn _mm_fmsubadd_ph(a: __m128h, b: __m128h, c: __m128h) -> __m128h

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

Multiply packed half-precision (16-bit) floating-point elements in a and b, alternatively subtract and add packed elements in c to/from the intermediate result, and store the results in dst.

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