94 ///performs a linesearch on the objectiveFunction given the starting point, its value the newton direction and optionally the derivative at the starting point
95 ///@param searchPoint the point where the linesearch start
96 ///@param pointValue the value of the function at searchPoint
97 ///@param newtonDirection the search direction of the line search
98 ///@param derivative the derivative of the function at searchPoint
99 ///@param stepLength initial step length guess for guiding the line search