SolveFuction_gauss_jacobi_working

main.c

@@ -51,7 +51,7 @@ int main(int argc, char* argv[]) {
 		strncpy(filePath, argv[1], MAX_FILE_PATH_LENGTH);
 	} else {
 		puts("Please enter the path of the file you'd like to open");
-		int result = scanf("%" STR(MAX_FILE_PATH_LENGTH) "[^\n]", filePath);
+		int result = scanf("%s" STR(MAX_FILE_PATH_LENGTH) "[^\n]", filePath);
 		if(result == EOF || result == 0 || filePath[0] == 0) {
 			return 0;
 		}
@@ -78,7 +78,7 @@ int main(int argc, char* argv[]) {
 			//printVector(b);
 			//puts("Vector x:");
 			//printVector(x);
-			
+
 			puts("Please enter the algorithm to use:\n\t0: Jacobi (default)\n\t1: Gauss-Seidel");
 			int algorithm;
 
@@ -212,7 +212,7 @@ bool load(const char* filename, Matrix* matrix, Vector* b, Vector* x) {
 
 			// initialize vector x with zeros
 			memset(x->data, 0, cols * sizeof(double));
-			
+
 		}
 	}
 success:
@@ -234,7 +234,7 @@ int readMatrixLine(FILE* file, double* matrixLine, int maxCols) {
 		if(fscanf(file, "%lf", &buffer) != 1) {
 			return -1;
 		}
-		
+
 		matrixLine[col] = buffer;
 
 		col++;
@@ -253,23 +253,66 @@ void flushStdin(void) {
 }
 
 Vector* solve(Method method, Matrix* A, Vector* b, Vector* x, double e) {
-	Vector* vectors = malloc(sizeof(Vector) * (MAX_ITERATION_STEPS + 1)); 
+	Vector* vectors = malloc(sizeof(Vector) * (MAX_ITERATION_STEPS + 1));
+
+
 
 	initVector(&vectors[0], b->n);
-	memcpy(vectors[0].data, b->data, b->n * sizeof(double));
+	memcpy(vectors[0].data, x->data, b->n * sizeof(double));
 
 	int vectorCount = 1;
-
+    double temp;
 	double delta = 0.0;
 
+	if (method == 0){
+
 	do {
-
-		// CODE
-
+        delta= 0.0;
+        initVector(&vectors[vectorCount],b->n);
+        for(int i=0; i<b->n; i++){
+        temp=0.0;
+            for(int j=0; j<b->n; j++){
+                if(j!=i){
+                    temp= temp+A->data[i][j]*vectors[vectorCount-1].data[j];
+                }
+            }
+        vectors[vectorCount].data[i]=(b->data[i]-temp)/A->data[i][i];
+        delta=fmax(fabs(vectors[vectorCount].data[i]-vectors[vectorCount-1].data[i]),delta);
+        }
+        printVector(&vectors[vectorCount]);
 		vectorCount++;
-	} while (delta < e && vectorCount < MAX_ITERATION_STEPS);
+	} while (delta > e && vectorCount < MAX_ITERATION_STEPS);
+
+	}
+
+	if (method ==1){
 
 
+        do{
+            delta = 0.0;
+            if (vectorCount==1){
+                initVector(&vectors[vectorCount], b->n);
+                memcpy(vectors[vectorCount].data, x->data, b->n * sizeof(double));}
+            else {
+                    initVector(&vectors[vectorCount], b->n);
+                    memcpy(vectors[vectorCount].data, vectors[vectorCount-1].data, b->n * sizeof(double));}
+
+            for (int i = 0; i<b->n; i++){
+            temp=0.0;
+                for (int j=0; j<b->n; j++){
+                    if (j!=i){
+                        temp = temp + A->data[i][j]*vectors[vectorCount].data[j];
+
+                    }
+                }
+            vectors[vectorCount].data[i] = (b->data[i]-temp)/A->data[i][i];
+            delta=fmax(fabs(vectors[vectorCount].data[i]-vectors[vectorCount-1].data[i]),delta);
+
+            }
+            printVector(&vectors[vectorCount]);
+            vectorCount++;
+        }while(delta > e && vectorCount < MAX_ITERATION_STEPS);
+	}
 
 	// MAX_ITERATION_STEPS enthält die maximal zulässige Anzahl an Iterationsschritten (100)
 	// Die einzelnen Vektoren müssen noch mit initVector initialisiert werden
@@ -279,11 +322,9 @@ Vector* solve(Method method, Matrix* A, Vector* b, Vector* x, double e) {
 
 	// on success
 	// Sei x die Anzahl der durchgeführten Iterationschritte. Dann setzt vectors[x+1].n = 0. Damit weiß das folgende Programm wie viele Schritte getätigt wurden.
-	return vectors;
+	vectors[vectorCount].n=0;
 
-	// on failure
-	free(vectors);
-	return NULL;
+	return vectors;
 }
 
 inline Matrix* createMatrix(void) {