Usage
disord_inverse(a)
disord_mod_disord(a,b)
disord_mod_numeric(a,b)
disord_negative(a)
disord_plus_disord(a,b)
disord_plus_numeric(a,b)
disord_power_disord(a,b)
disord_power_numeric(a,b)
numeric_power_disord(a,b)
disord_prod_disord(a,b)
disord_prod_numeric(a,b)
disord_arith_unary(e1,e2)
disord_arith_disord(e1,e2)
disord_arith_numeric(e1,e2)
numeric_arith_disord(e1,e2)