Switched sum and log in nll...
Switched sum and log in nll...

A zero log, which is nan, will be summed with all other terms, which
propagates the nan. Is this the culprit?

roofit-dev/parallel-roofit-scripts,roofit-dev/parallel-roofit-scripts,roofit-dev/parallel-roofit-scripts,roofit-dev/parallel-roofit-scripts,roofit-dev/parallel-roofit-scripts