Hello, On Thu, 13 Dec 2001, Hidehiro FUJIO wrote:
I'm using GiNaC for making numerical simulation tools.
My problem with GiNaC is how to handle 'sqrt' function in expression input. The simplest example is,
======================================= #include <ginac/ginac.h>
using namespace GiNaC; #include <iostream.h> int main() { symbol x("x"); ex e("sqrt(x)",lst(x)); cout << e <<endl; } =======================================
When it runs, it makes core dump.
Rather it throws an (uncaught) exception telling you that there is no function 'sqrt' included in the parser.
When I use 'sin' instead of 'sqrt', the result is what I expected with GiNaC library.
Is it a bug or normal? If normal, how to input expression that contains 'sqrt' function?
Till this is fixed, just use "x^(1/2)" instead of "sqrt(x)" when constructing an ex from a string. Regards -richy. -- Richard B. Kreckel <Richard.Kreckel@Uni-Mainz.DE> <http://wwwthep.physik.uni-mainz.de/~kreckel/>