GammaLib

To provide more flexibility in the fit, the error computation could be removed from GOptimizerLM::optimize(). In ctlike, the function GOptimizerLM::errors() has to be called explicitly. This will increase the computation speed, e.g. for TS computations, where no errors are needed.

For this purpose, the GOptimizer base has to be extended by the following function:

virtual void errors(GOptimizerFunction& fct, GOptimizerPars& pars);