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

using namespace std;

int main ( )
//
//  LOCAL_MIN_TEST tests the BRENT function "LOCAL_MIN".
//
{
  double a = -5.0, b = 1.0, fmin, t = 0.000001, xmin;

  fmin = local_min ( a, b, t, f, xmin );

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

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

  value = ( x + sin ( x ) ) * exp ( - x * x );

  return value;
}