Current Point and Function Value

The current point and function value are the first two outputs of all Optimization Toolbox™ solvers.

• The current point is the final point in the solver iterations. It is the best point the solver found in its run.

  • If you call a solver without assigning a value to the output, the default output, ans, is the current point.

• The function value is the value of the objective function at the current point.

  • The function value for least-squares solvers is the sum of squares, also known as the residual norm.

  • fgoalattain, fminimax, and fsolve return a vector function value.

  • Sometimes fval or Fval denotes function value.