Function geometry_predicates::predicates::eight_four_sum

pub fn eight_four_sum(
    a7: f64, 
    a6: f64, 
    a5: f64, 
    a4: f64, 
    a3: f64, 
    a2: f64, 
    a1: f64, 
    a0: f64, 
    b4: f64, 
    b3: f64, 
    b1: f64, 
    b0: f64
) -> [f64; 12]