Function core::arch::x86::_mm256_undefined_si256

pub unsafe fn _mm256_undefined_si256() -> __m256i

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

Returns vector of type __m256i with 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.

Intel’s documentation