Function _mm512_mask_dpbf16_ps

#[target_feature(enable = "avx512bf16", enable = "avx512f")]
pub fn _mm512_mask_dpbf16_ps(src: __m512, k: __mmask16, a: __m512bh, b: __m512bh) -> __m512

Compute dot-product of BF16 (16-bit) floating-point pairs in a and b, accumulating the intermediate single-precision (32-bit) floating-point elements with elements in src, and store the results in dst using writemask k (elements are copied from src when the corresponding mask bit is not set). Intel's documentation