Function _mm256_mask_add_ph 

pub fn _mm256_mask_add_ph(
    src: __m256h,
    k: u16,
    a: __m256h,
    b: __m256h,
) -> __m256h

Add packed half-precision (16-bit) floating-point elements in a and b, and store the results in dst using writemask k (elements are copied from src when the corresponding mask bit is not set).

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