Hi, James Jackson wrote:
I've just started using GiNaC (and very nice it is too!), however I have some strange behavior with an expression not being simplified. One output of a linear equation solver is the expression:
(C_2*s^2*L_2*V_1+C_2*L_1*C_1*s^4*L_2*V_1+L_1*C_1*s^2*V_1+V_1)*(1+L_1*C_1*s^2+C_2*L_1*s^2+C_2*L_1*C_1*s^4*L_2+C_2*s^2*L_2)^(-1)*V_1^(-1)
What is happening is that the V_1 terms in the first bracket are not being factorised, and therefore no cancellation with the final (V_1)^(-1) term is occuring. All my symbols are created with a SymbolFactory pattern, so I can be sure each V_1 is the same object.
Can anyone suggest why GiNaC isn't simplifying this to cancel the V_1 terms?
The linear solvers don't cancel common factors in numerator and denominator. You have to explicitly call normal() on the result in order to do that. Bye -richy. -- Richard B. Kreckel <http://www.ginac.de/~kreckel/>