STK_TESTFUN_BRANINHOO computes the Branin-Hoo function.

    The Branin-Hoo function (Branin and Hoo, 1972) is a classical test
    function for global optimization algorithms, which belongs to the
    well-known Dixon-Szego test set (Dixon and Szego, 1978). It is usually
    minimized over [-5; 10] x [0; 15].

 REFERENCES

  [1] Branin, F. H. and Hoo, S. K. (1972), A Method for Finding Multiple
      Extrema of a Function of n Variables, in Numerical methods of
      Nonlinear Optimization (F. A. Lootsma, editor, Academic Press,
      London), 231-237.

  [2] Dixon L.C.W., Szego G.P., Towards Global Optimization 2, North-
      Holland, Amsterdam, The Netherlands (1978)