Function: logn(min(gradient[2](round(numbers("xxr"), numbers('yyx'))) if numbers("xxr") > minus(gradient[2](round(numbers("xxr"), numbers('yyx'))), round(numbers("xxr"), numbers('yyx'))) else round(numbers("xxr"), numbers('yyx')), minus(gradient[2](round(numbers("xxr"), numbers('yyx'))), round(numbers("xxr"), numbers('yyx')))))
