Function _mm_rsqrt_ph

#[target_feature(enable = "avx512fp16", enable = "avx512vl")]
pub fn _mm_rsqrt_ph(a: __m128h) -> __m128h

Compute the approximate reciprocal square root of packed half-precision (16-bit) floating-point elements in a, and store the results in dst. The maximum relative error for this approximation is less than 1.5*2^-12.

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