Function _mm256_permutexvar_ph

#[target_feature(enable = "avx512fp16", enable = "avx512vl")]
pub fn _mm256_permutexvar_ph(idx: __m256i, a: __m256h) -> __m256h

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

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