Function _mm256_maskz_conj_pch 

pub fn _mm256_maskz_conj_pch(k: __mmask8, a: __m256h) -> __m256h

🔬This is a nightly-only experimental API. (stdarch_x86_avx512_f16 #127213)

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

Compute the complex conjugates of complex numbers in a, and store the results in dst using zeromask k (the element is zeroed out when corresponding mask bit is not set). 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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