Function `_mm256_maskz_scalef_ph`

#[target_feature(enable = "avx512fp16", enable = "avx512vl")]
pub fn _mm256_maskz_scalef_ph(k: __mmask16, a: __m256h, b: __m256h) -> __m256h

Scale the packed half-precision (16-bit) floating-point elements in a using values from b, and store the results in dst using zeromask k (elements are zeroed out when the corresponding mask bit is not set).

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