Function `_mm256_mask3_fnmadd_ph`

#[target_feature(enable = "avx512fp16", enable = "avx512vl")]
pub const fn _mm256_mask3_fnmadd_ph(a: __m256h, b: __m256h, c: __m256h, k: __mmask16) -> __m256h

Multiply packed half-precision (16-bit) floating-point elements in a and b, subtract the intermediate result from packed elements in c, and store the results in dst using writemask k (the element is copied from c when the corresponding mask bit is not set).

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