Function: gradient[1](mod(numbers("xxr"), numbers('yyx')) if numbers("xxr") if numbers('yyx') > numbers('yyx') if numbers("xxr") > numbers('yyx') else mod(numbers("xxr"), numbers('yyx')) else mod(numbers("xxr"), numbers('yyx')) > numbers("xxr") else mod(numbers("xxr"), numbers('yyx')) if numbers("xxr") > numbers('yyx') else numbers('yyx'))
