Function _mm_undefined_pd

pub 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.with indetermination elements. Despite using the word “undefined” (following Intel’s naming scheme), this non-deterministically picks some valid value and is not equivalent to mem::MaybeUninit. In practice, this is typically equivalent to mem::zeroed.

Intel’s documentation