Function _mm512_permutex2var_ph

#[target_feature(enable = "avx512fp16")]
pub fn _mm512_permutex2var_ph(a: __m512h, idx: __m512i, b: __m512h) -> __m512h

Shuffle half-precision (16-bit) floating-point elements in a and b using the corresponding selector and index in idx, and store the results in dst.

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