68a5261d26
We implement `computeNumTerms()`, which counts the number of terms in a generating function by substituting the unit vector in it. This is the main function in Barvinok's algorithm – the number of points in a polytope is given by the number of terms in the generating function corresponding to it. We also modify the GeneratingFunction class to have `const` getters and improve the simplification of QuasiPolynomials.