Function _mm_undefined_pd

pub unsafe fn _mm_undefined_pd() -> __m128d

Available on (x86 or x86-64) and target feature sse2 and x86 only.

Returns vector of type __m128d with indeterminate elements. Despite being “undefined”, this is some valid value and not equivalent to mem::MaybeUninit. In practice, this is equivalent to mem::zeroed.

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