Function: minus(numbers("xxy"), numbers('epe')) if numbers("per") > numbers('epe') else numbers("xxy") if exp(invert(invert(minus(numbers("xxy"), numbers('epe')) if numbers("xxy") > numbers('epe') else numbers("per"))), invert(minus(numbers("xxy"), numbers('epe')) if numbers("xxy") > numbers("per") else numbers('epe'))) > invert(numbers("per") if numbers('epe') > numbers("xxy") else minus(numbers("xxy"), numbers('epe'))) else invert(invert(numbers('epe') if minus(numbers("xxy"), numbers('epe')) > numbers("per") else numbers("xxy")))