MainFunction funk = new MainFunction(); //We get function from this
public bool CheckInterval(float a, float b) // interval has same signs at each end
{
if (Math.Sign(funk.Function(a)) == Math.Sign(funk.Function(b)))
{
return(true); //signs are the same
}
return(false);
}
public void DoAlgoritm()
{
if (!algorithms.CheckInterval(variables.A, variables.B)) //checks interval if signs are different
{
var c = algorithms.FindCenterPoint(variables.A, variables.B); //gets center point
var answer = funk.Function(c); //gets f(c) answer
if (algorithms.IsAnswerSmallerEpsilon(answer, variables.epsilon)) //checks if f(c) answer is smaller than epsilon if true stops iteration
{
variables.IsAnswerGood = false;
}
if (answer == 0)
{
Print(_iteration++, variables.A, variables.B, c, answer);
return;
}
if (algorithms.CheckInterval(c, variables.A)) //check interval signs
{
Print(_iteration++, variables.A, variables.B, c, answer);
variables.A = c; // c and A are on the same side (have same signs)
}
else
{
Print(_iteration++, variables.A, variables.B, c, answer);
variables.B = c; // c and A have different signs
}
}
}
public float CountingNewPoint(float a, float b) //finding new point
{
float newPoint;
var temp1 = b - a;
var temp2 = funk.FunctionForTwo(a, b);
temp1 = temp1 / temp2;
temp2 = funk.Function(b);
newPoint = b - temp2 * temp1;
return(newPoint);
}
public void MainSecant()
{
while (true)
{
var temp = algorithm.CountingNewPoint(variables.A, variables.B); //finds new point
variables.A = variables.B;
variables.B = temp;
temp = funk.Function(variables.B);
Print(variables.A, variables.B, temp);
i++;
if (algorithm.CheckPrecision(variables.A, variables.B, variables.epsilon) || i == 100)
{
break;
}
}
}