**Type Name:**`RF`**Structure:**- (
*n*,*d*) **Description:**- A list consisting of two
SACLIB integral polynomials , representing
the numerator and the denominator of a rational function.
*n*and*d*are considered to be relatively prime and the leading coefficient of the denominator is supposed to be positive. We call this representation of a rational function*normalized*. All operations on rational functions are implemented in such a way that the result is normalized again.Basic polynomial arithmetic and calculation of the greatest common divisor of two polynomials (for cancelling common factors of the numerator and denominator) are used from SACLIB.

Thu Sep 3 14:50:07 MDT 1998