Function _mm256_hadd_pd

pub unsafe fn _mm256_hadd_pd(a: __m256d, b: __m256d) -> __m256d

Available on (x86 or x86-64) and target feature avx and x86 only.

Horizontal addition of adjacent pairs in the two packed vectors of 4 64-bit floating points a and b. In the result, sums of elements from a are returned in even locations, while sums of elements from b are returned in odd locations.

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