Function split_32

pub fn split_32<C: Config>(
    builder: &mut Builder<C>,
    val: Var<C::N>,
    n: usize,
) -> Vec<Felt<C::F>>

Reference: https://github.com/Plonky3/Plonky3/blob/622375885320ac6bf3c338001760ed8f2230e3cb/field/src/helpers.rs#L149