GNU Scientific Library (GSL) and GoldSim
The GNU Scientific Library (GSL) contains a large selection of scientific and engineering algorithms. The GSL routines can be used from GoldSim by compiling a custom DLL and using this with the External element. GSL source code, example DLL source code, two example GoldSim models, and instructions are provided as part of this model library archive.
For additional information, see the GoldSim External Element and the GNU Scientific Library, Modeling Tips page.