Code covered by the BSD License  

Highlights from
INTSOLVER: An interval based solver for Global Optimization

from INTSOLVER: An interval based solver for Global Optimization by Tiago Montanher
Interval based functions to solve small global optimization problems with guaranteed bounds.

evsmith(x)
function y = evsmith(x)

% Name: Smith
% Reference: 
% Handbook of Test Problems in Local and Global Optimization. C.A. Floudas,
% P. M. Pardalos, C.S. Adjiman, W. R. Esposito, Z.H. Gumus, S. T. Harding,
% J.L. Klepeis, C. A. Meyer, C. A. Schweiger. 1999. Kluwer Publishers.
% Variables: 1
% Initial Point/ Initial Interval: 500 / [100, 1000]
% Matlab Code by Tiago Montanher (Mar. 06, 2009).
 
  H = -50000;
  a = -1000/(3*H);
  b = 1.344*10^9;
  c = -7548.1193;
  T = 298;
  y = exp(c/x) * x * (b/T) - exp(c/x)*((b + b*a*T) / (a * T)) + x/T - 1;
end

Contact us at files@mathworks.com