Function _mm256_rsqrt_ps
#[target_feature(enable = "avx")]
pub fn _mm256_rsqrt_ps(a: __m256) -> __m256Computes the approximate reciprocal square root of packed single-precision
(32-bit) floating-point elements in a, and returns the results.
The maximum relative error for this approximation is less than 1.5*2^-12.