WIP : PatternTrackParameters::newCovarianceMatrix, use similar implementation as the...
requested to merge ATLAS-EGamma/athena:PatternTrackParameters_newCovarianceMatrix_Same_asRkUtils into master
PatternTrackParameters::newCovarianceMatrix, use similar implementation as the method with same name under RungeKuttaUtils ( https://acode-browser1.usatlas.bnl.gov/lxr/source/athena/Tracking/TrkExtrapolation/TrkExUtils/src/RungeKuttaUtils.cxx#0986) It is a bit cleaner and a bit more efficient implementation
@goblirsc and @npetters . If this work perhaps we could pull this out in the "common " implementation header like we did for the Jacobian calculation? If it works ...