Function: log(round(minus(gradient[1](numbers("xxr")), numbers("xxr")) if numbers("xxr") > numbers("xxx") else gradient[1](numbers("xxr")), minus(gradient[1](numbers("xxr")), numbers("xxr"))), minus(gradient[1](numbers("xxr")), numbers("xxr")) if gradient[1](numbers("xxr")) > numbers("xxx") else numbers("xxr"))