Function _mm256_conj_pch 

pub fn _mm256_conj_pch(a: __m256h) -> __m256h

Available on x86-64 and target feature avx512fp16 and target feature avx512vl only.

Compute the complex conjugates of complex numbers in a, and store the results in dst. Each complex number is composed of two adjacent half-precision (16-bit) floating-point elements, which defines the complex number complex = vec.fp16[0] + i * vec.fp16[1], or the complex conjugate conjugate = vec.fp16[0] - i * vec.fp16[1].

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