Function _mm_addsub_pd

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

Available on (x86 or x86-64) and target feature sse3 and x86-64 only.

Alternatively add and subtract packed double-precision (64-bit) floating-point elements in a to/from packed elements in b.

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