Function boolean_enums::lstd::arch::x86::_mm_hadd_pd

pub unsafe fn _mm_hadd_pd(a: __m128d, b: __m128d) -> __m128d

This is supported on x86 and target feature sse3 only.

Horizontally add adjacent pairs of double-precision (64-bit) floating-point elements in a and b, and pack the results.

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