Marco Ratto authored Feb 14, 2023 and Johannes Pfeifer committed Dec 14, 2023

newrat: distinguish between TolFun (optimizer termination criterion) and TolGstep/TolGstepRel, used for tuning gradient step

Allows using e.g. TolFun=1.e-5 with coarser values for TolGstep; helpful whenmaximizing non smooth surfaces (e.g. PKF or very large models), where numerical noise may count. By default TolGstep=TolFun as in usual historical behavior.