Anpassung neuralNetworkTests

info2praktikum-neuronalesnetz/matrix.c

@@ -54,21 +54,30 @@ MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int co
 
 Matrix add(const Matrix matrix1, const Matrix matrix2)
 {
-    if (matrix1.rows != matrix2.rows || matrix1.cols != matrix2.cols) { // Matrixen können nur addiert werden, sofern sie jeweils die gleiche Anzahl Spalten und Zeilen haben
-      Matrix errorMatrix = createMatrix(0, 0);
-      errorMatrix.buffer = NULL;
-      return errorMatrix;
+    size_t rows = (matrix1.rows > matrix2.rows) ? matrix1.rows : matrix2.rows;
+    size_t cols = (matrix1.cols > matrix2.cols) ? matrix1.cols : matrix2.cols;
+
+    // Prüfen, ob Broadcasting möglich ist
+    if (!((matrix1.rows == rows || matrix1.rows == 1) &&
+          (matrix2.rows == rows || matrix2.rows == 1) &&
+          (matrix1.cols == cols || matrix1.cols == 1) &&
+          (matrix2.cols == cols || matrix2.cols == 1))) {
+        Matrix errorMatrix = createMatrix(0, 0);
+        return errorMatrix;
     }
 
-    Matrix result = createMatrix(matrix1.rows, matrix1.cols);
-    for (size_t i = 0; i < matrix1.rows; i++) {
-      for (size_t j = 0; j < matrix1.cols; j++) {
-        MatrixType sum = getMatrixAt(matrix1, i, j) + getMatrixAt(matrix2, i, j);
-        setMatrixAt(sum, result, i, j);
-      }
+    Matrix result = createMatrix(rows, cols);
+
+    for (size_t i = 0; i < rows; i++) {
+        for (size_t j = 0; j < cols; j++) {
+            MatrixType val1 = matrix1.buffer[(i % matrix1.rows) * matrix1.cols + (j % matrix1.cols)];
+            MatrixType val2 = matrix2.buffer[(i % matrix2.rows) * matrix2.cols + (j % matrix2.cols)];
+            result.buffer[i * cols + j] = val1 + val2;
+        }
     }
+
     return result;
-  }
+}
 
 
 Matrix multiply(const Matrix matrix1, const Matrix matrix2)

info2praktikum-neuronalesnetz/matrixTests.c

@@ -71,6 +71,32 @@ void test_addFailsOnDifferentInputDimensions(void)
     TEST_ASSERT_EQUAL_UINT32(0, result.cols);
 }
 
+void test_addSupportsBroadcasting(void)
+{
+    MatrixType buffer1[] = {1, 2, 3, 4, 5, 6};
+    MatrixType buffer2[] = {7, 8};
+    Matrix matrix1 = {.rows=2, .cols=3, .buffer=buffer1};
+    Matrix matrix2 = {.rows=2, .cols=1, .buffer=buffer2};
+
+    Matrix result1 = add(matrix1, matrix2);
+    Matrix result2 = add(matrix2, matrix1);
+
+    float expectedResults[] = {8, 9, 10, 12, 13, 14};
+
+    TEST_ASSERT_EQUAL_UINT32(matrix1.rows, result1.rows);
+    TEST_ASSERT_EQUAL_UINT32(matrix1.cols, result1.cols);
+    TEST_ASSERT_EQUAL_UINT32(matrix1.rows, result2.rows);
+    TEST_ASSERT_EQUAL_UINT32(matrix1.cols, result2.cols);
+
+    TEST_ASSERT_EQUAL_INT(sizeof(expectedResults)/sizeof(expectedResults[0]), result1.rows * result1.cols);
+    TEST_ASSERT_EQUAL_FLOAT_ARRAY(expectedResults, result1.buffer, result1.cols * result1.rows);
+    TEST_ASSERT_EQUAL_INT(sizeof(expectedResults)/sizeof(expectedResults[0]), result2.rows * result2.cols);
+    TEST_ASSERT_EQUAL_FLOAT_ARRAY(expectedResults, result2.buffer, result2.cols * result2.rows);
+
+    free(result1.buffer);
+    free(result2.buffer);
+}
+
 void test_multiplyReturnsCorrectResults(void)
 {
     MatrixType buffer1[] = {1, 2, 3, 4, 5, 6};
@@ -159,6 +185,7 @@ int main()
     RUN_TEST(test_clearMatrixSetsMembersToNull);
     RUN_TEST(test_addReturnsCorrectResult);
     RUN_TEST(test_addFailsOnDifferentInputDimensions);
+    RUN_TEST(test_addSupportsBroadcasting);
     RUN_TEST(test_multiplyReturnsCorrectResults);
     RUN_TEST(test_multiplyFailsOnWrongInputDimensions);
     RUN_TEST(test_getMatrixAtReturnsCorrectResult);

info2praktikum-neuronalesnetz/neuralNetworkTests.c

@@ -8,7 +8,41 @@
 
 static void prepareNeuralNetworkFile(const char *path, const NeuralNetwork nn)
 {
-    // TODO
+    FILE *file = fopen(path, "wb");
+    if (!file) {
+        perror("Fehler beim Öffnen der Datei");
+        return;
+    }
+
+    // Header schreiben
+    const char *header = "__info2_neural_network_file_format__";
+    fwrite(header, sizeof(char), strlen(header), file);
+
+    // Alle Layer schreiben
+    for (unsigned int i = 0; i < nn.numberOfLayers; i++) {
+        Layer layer = nn.layers[i];
+
+        unsigned int inputDim = layer.weights.cols;   // Anzahl Eingänge
+        unsigned int outputDim = layer.weights.rows;  // Anzahl Ausgänge
+
+        // Dimensionen schreiben
+        fwrite(&inputDim, sizeof(unsigned int), 1, file);
+        fwrite(&outputDim, sizeof(unsigned int), 1, file);
+
+        // Gewichte schreiben
+        size_t weightCount = layer.weights.rows * layer.weights.cols;
+        fwrite(layer.weights.buffer, sizeof(MatrixType), weightCount, file);
+
+        // Biases schreiben
+        size_t biasCount = layer.biases.rows * layer.biases.cols;
+        fwrite(layer.biases.buffer, sizeof(MatrixType), biasCount, file);
+    }
+
+    // End-Marker (inputDim = 0)
+    unsigned int zero = 0;
+    fwrite(&zero, sizeof(unsigned int), 1, file);
+
+    fclose(file);
 }
 
 void test_loadModelReturnsCorrectNumberOfLayers(void)