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Commit 02c74460 authored by Marco Ratto's avatar Marco Ratto
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distinguish between TolFun (optimizer termination criterion) and... 

distinguish between TolFun (optimizer termination criterion) and TolGstep/TolGstepRel, used for tuning gradient step.
So, we can keep for example TolFun=1.e-5, while allowing coarser values for TolGstep. this may help when maximizing non smooth surfaces (e.g. PKF or very large models), where numerical noise may count. By default TolGstep=TolFun as in usual historical behavior.
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1 merge request!2224enhancements and new robust feature in line search within optimizer=5
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