Function: minus(exp(numbers("xxy"), numbers('xry')) if numbers('xry') if exp(numbers("xxy"), numbers('xry')) > numbers("xxy") else min(exp(numbers("xxy"), numbers('xry')), numbers("xxy")) > min(exp(numbers("xxy"), numbers('xry')), numbers("xxy")) else numbers("xxy"), numbers('xry') if min(exp(numbers("xxy"), numbers('xry')), numbers("xxy")) > numbers("xxy") else exp(numbers("xxy"), numbers('xry')))