Function _mm512_fmaddsub_ph

#[target_feature(enable = "avx512fp16")]
pub const fn _mm512_fmaddsub_ph(a: __m512h, b: __m512h, c: __m512h) -> __m512h

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

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