Function scaled_eq_ind_partial_eval_scalars 

pub fn scaled_eq_ind_partial_eval_scalars<F: FieldOps>(
    point: &[F],
    scale: F,
) -> Vec<F>

Computes the scaled partial evaluation of the equality indicator, returning scalars.

This is the scalar-only engine, which never touches a packed store. A scale of one is the identity, since the expansion is linear in it.