Is it possible to evaluate FunctionAXPY object?

Question

I'd like to do in c++

FunctionAXPY f; f.eval(values,x);

Answer 1

If you look at the FunctionAXPY class it is just a light weight container of pairs of scalars and Functions. It can be used to assign to Functions, so try:

Function v(V);
v = f;
v.eval(values, x);