Function: sqrt(invert(numbers("per") if numbers("xxx") > minus(numbers("per"), numbers("xxx")) else numbers("yyy")) if numbers("yyy") if numbers("per") > numbers("xxx") else minus(numbers("per"), numbers("xxx")) > minus(numbers("per"), numbers("xxx")) else invert(numbers("yyy") if numbers("per") > numbers("xxx") else minus(numbers("per"), numbers("xxx"))) if minus(numbers("per"), numbers("xxx")) > numbers("yyy") if numbers("xxx") > numbers("per") else minus(numbers("per"), numbers("xxx")) else numbers("per"))