Function: minus(log(numbers('xyy'), numbers('xry')) if abs(max(log(numbers('xyy'), numbers('xry')), numbers('xyy'))) > numbers('xyy') else max(log(numbers('xyy'), numbers('xry')), numbers('xyy')), abs(max(log(numbers('xyy'), numbers('xry')), numbers('xyy'))))