# include <cstdlib>
# include <iostream>
# include <cmath>
# include "brent.hpp"
double f6 ( double x );

using namespace std;

int main ( )
{
  double a = 0.0, b = 7.0, c = 3.5, fmin, m = 101.0, e = 0.000001, 
  t = 0.000001, xmin;

  fmin = glomin ( a, b, c, m, e, t, f6, xmin );

  cout << "\n";
  cout << "GLOMIN returns FMIN = " << fmin << " at x = " << xmin << "\n";

  return 0;
}
double f6 ( double x )
{
  double value;

  value =     cos (       x ) 
        + 5 * cos ( 1.6 * x )
        - 2 * cos ( 2.0 * x )
        + 5 * cos ( 4.5 * x )
        + 7 * cos ( 9.0 * x );

  return value;
}