File: rosenbrockstruc.m

package info (click to toggle)
cppnumericalsolvers 1.0.0-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 372 kB
  • sloc: cpp: 2,694; python: 236; sh: 20; makefile: 10
file content (11 lines) | stat: -rw-r--r-- 321 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
 
function [f,g,h] = rosenbrock_struct(x)
% Calculate objective f
f = 100*(x(2) - x(1)^2)^2 + (1-x(1))^2;

if nargout > 1 % gradient required
    g = [-400*(x(2)-x(1)^2)*x(1)-2*(1-x(1));
        200*(x(2)-x(1)^2)];
end
if nargout > 2 % hessian required
    h = [ 1200*x(1)*x(1)-400*x(2)+1 , -400*x(1); -400*x(1) , 200];
end