# Function _mm512_undefined

1.89.0 · Source

    pub fn _mm512_undefined() -> __m512

Available on (x86 or x86-64) and target feature `avx512f` and x86-64 only.
Expand description

Return vector of type __m512 with indeterminate 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