Function _mm_mask_add_ph 

pub fn _mm_mask_add_ph(src: __m128h, k: u8, a: __m128h, b: __m128h) -> __m128h

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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