In reply to cgales:
Yes, the field macros are what I was referring to. If I wanted to do this style of compare are you recommending that I skip the field macros for the class members that need to compare for tolerance and add a do_compare method? I already have added the do_compare method and expected that was all I needed to do, but somehow it is failing even before it calls the do_compare method.
Thanks for the insight, I was hoping for a code snippet that I could study.
TomT…