function z : - inf , + inf - > -1 , 1 concode_field_sep PlaceHolder placeHolder concode_field_sep double infFunction concode_elem_sep double toNormalizedPathParameter concode_elem_sep double toParentPathParameter
double function ( double arg0 ) { if ( arg0 == Double . NEGATIVE_INFINITY ) { return - 1 + PathMover . OPEN_BORDER_OFFSET ; } if ( arg0 >= 0 ) { return arg0 / ( 1 + arg0 ) ; } return arg0 / ( 1 - arg0 ) ; }