- added bisektion. for "nlgs"

SCE/SCE/SCE.cpp

@@ -5,6 +5,7 @@ using namespace std;
 
 void cylinder();
 void lgs();
+void nlgs();
 
 int main()
 {
@@ -14,6 +15,7 @@ int main()
 		cout << "Was wollen Sie tun ?" << endl;
 		cout << "1 Berechungen an einem Zylinder" << endl;
 		cout << "2 LGS loesen" << endl;
+		cout << "3 n.LGS loesen" << endl;
 
 		cout << "e Beenden" << endl;
 		
@@ -22,6 +24,7 @@ int main()
 		{
 			case '1': cylinder(); break;
 			case '2': lgs(); break;
+			case '3': nlgs(); break;
 			
 			default: cout << "Okay, bye" << endl; break;
 		}
@@ -44,3 +47,7 @@ void lgs()
 	cout << lgs.cramer();
 	cout << endl;
 }
+void nlgs()
+{
+	
+}

SCE/SCE/nlgs.cpp

@@ -0,0 +1,34 @@
+#include "nlgs.h"
+#include "math.h"
+#include <iostream>
+using namespace std;
+
+
+long double nlgs::function(long double x)
+{
+	return (pow(x, 4) - x - 10);
+}
+
+long double nlgs::round(long double x, int acc) 
+{
+	x = x * pow(10, acc);
+	int temp = x;
+	x = temp;
+	x = x / pow(10, acc);
+	return x;
+}
+
+float nlgs::bisektion(long double A, long double B , int limit, int acc)
+{
+	long double a = A;
+	long double b = B;
+	long double c;
+	for (int i = limit; i--;) 
+	{
+		c = (a + b) / 2;
+		c = round(c, acc);
+		if (function(a)*function(c) > 0) { a = c; }
+		if (function(c)*function(b) > 0) { b = c; }
+	}
+}
+

SCE/SCE/nlgs.h

@@ -0,0 +1,15 @@
+#pragma once
+class nlgs
+{
+private:
+	long double function(long double);
+	long double round(long double, int);
+public:
+	float bisektion(long double, long double, int, int );		//a, b, number of iterations, accuracy
+	float fixedpoint();
+	float newton();
+	float secant();
+	nlgs(){};
+	~nlgs(){};
+};
+