More Vector tests

@@ -141,6 +141,8 @@ fn _vector() {
     println!("{:>14} : {}", format!("v1 * {}", s), v1.mul(&s));
     println!("{:>14} : {}", "norm v1", v1.norm());
     println!("{:>14} : {}", "abs norm v1", v1.norm().abs());
+    println!("{:>14} : {}", "abs v1", v1.abs());
+    println!("{:>14} : {}", "norm * abs", v1.norm().mul(&v1.abs()));
     println!("{:>14} : {}", "distance v1 v2", v1.distance(v2));
     println!("{:>14} : {}", "distance v2 v1", v2.distance(v1));
     println!("{:>14} : {}", "v1 dot v2", v1.dot(v2));