public void MinBrent2()
{
double xmin = 0;
//local minimum
double realXmin = 4.057968;
double eps = 1e-5;
int maxCount = 50;
LineSearch ls = new LineSearch();
TestFunction1 f = new TestFunction1();
int counter = ls.FindMinimumViaBrent(f,1,4,5,maxCount,eps,ref xmin);
Assert.IsTrue(counter<maxCount);
Assert.IsTrue (System.Math.Abs(xmin-realXmin)<eps);
}
public void MinInterval3()
{
int maxCount=30;
LineSearch ls = new LineSearch();
TestFunction1 f = new TestFunction1();
double[] res = new double[3];
int counter = ls.FindMinInterval(f,4,2,maxCount, ref res);
double aVal = f.GetVal(res[0]);
double bVal = f.GetVal(res[1]);
double cVal = f.GetVal(res[2]);
Assert.IsTrue(counter<maxCount);
Assert.IsTrue((aVal>bVal)&&(cVal>bVal));
}
public void MinGold2()
{
double xmin=0;
//local minimum
double realXmin = 4.057968;
double eps = 1e-5;
int counterMax = 50;
LineSearch ls = new LineSearch();
TestFunction1 f = new TestFunction1();
int counter = ls.FindMinimumViaGoldenSection(f,1,4,5,counterMax,eps,ref xmin);
Assert.IsTrue(counter<counterMax);
Assert.IsTrue (System.Math.Abs(xmin-realXmin)<eps);
}
public void MinGold2()
{
double xmin = 0;
//local minimum
double realXmin = 4.057968;
double eps = 1e-5;
int counterMax = 50;
LineSearch ls = new LineSearch();
TestFunction1 f = new TestFunction1();
int counter = ls.FindMinimumViaGoldenSection(f, 1, 4, 5, counterMax, eps, ref xmin);
Assert.IsTrue(counter < counterMax);
Assert.IsTrue(System.Math.Abs(xmin - realXmin) < eps);
}
public void MinBrent1()
{
double xmin=0;
int maxCount = 50;
double realXmin = -1.364641;
double eps = 1e-5;
LineSearch ls = new LineSearch();
TestFunction1 f = new TestFunction1();
double[] res = new double[3];
int counter = ls.FindMinInterval(f,-10,1,maxCount,ref res);
counter = ls.FindMinimumViaBrent(f,res[0],res[1],res[2],maxCount,eps, ref xmin);
Assert.IsTrue(counter<maxCount);
Assert.IsTrue (System.Math.Abs(xmin-realXmin)<eps);
}
public void MinBrent2()
{
double xmin = 0;
//local minimum
double realXmin = 4.057968;
double eps = 1e-5;
int maxCount = 50;
LineSearch ls = new LineSearch();
TestFunction1 f = new TestFunction1();
int counter = ls.FindMinimumViaBrent(f, 1, 4, 5, maxCount, eps, ref xmin);
Assert.IsTrue(counter < maxCount);
Assert.IsTrue(System.Math.Abs(xmin - realXmin) < eps);
}
public void MinGold1()
{
double xmin=0;
double realXmin = -1.364641;
double eps = 1e-5;
int counterMax = 50;
LineSearch ls = new LineSearch();
TestFunction1 f = new TestFunction1();
double [] res = new double[3];
int counter1 = ls.FindMinInterval(f,-10,1,30,ref res);
int counter2 = ls.FindMinimumViaGoldenSection(f,res[0],res[1],res[2],counterMax,eps,ref xmin);
Assert.IsTrue(counter2<counterMax);
Assert.IsTrue (System.Math.Abs(xmin-realXmin)<eps);
}
public void MinInterval3()
{
int maxCount = 30;
LineSearch ls = new LineSearch();
TestFunction1 f = new TestFunction1();
double[] res = new double[3];
int counter = ls.FindMinInterval(f, 4, 2, maxCount, ref res);
double aVal = f.GetVal(res[0]);
double bVal = f.GetVal(res[1]);
double cVal = f.GetVal(res[2]);
Assert.IsTrue(counter < maxCount);
Assert.IsTrue((aVal > bVal) && (cVal > bVal));
}
public void MinGold1()
{
double xmin = 0;
double realXmin = -1.364641;
double eps = 1e-5;
int counterMax = 50;
LineSearch ls = new LineSearch();
TestFunction1 f = new TestFunction1();
double [] res = new double[3];
int counter1 = ls.FindMinInterval(f, -10, 1, 30, ref res);
int counter2 = ls.FindMinimumViaGoldenSection(f, res[0], res[1], res[2], counterMax, eps, ref xmin);
Assert.IsTrue(counter2 < counterMax);
Assert.IsTrue(System.Math.Abs(xmin - realXmin) < eps);
}
public void MinBrent1()
{
double xmin = 0;
int maxCount = 50;
double realXmin = -1.364641;
double eps = 1e-5;
LineSearch ls = new LineSearch();
TestFunction1 f = new TestFunction1();
double[] res = new double[3];
int counter = ls.FindMinInterval(f, -10, 1, maxCount, ref res);
counter = ls.FindMinimumViaBrent(f, res[0], res[1], res[2], maxCount, eps, ref xmin);
Assert.IsTrue(counter < maxCount);
Assert.IsTrue(System.Math.Abs(xmin - realXmin) < eps);
}
