testing

imageInput.c

@@ -41,24 +41,31 @@ GrayScaleImageSeries *readImages(const char *path)
 
         if (expectedHeader)
         {
+            printf("expected Header!\n");
             // reallocate memory so that each image width can be saved seperately
             series->images      = realloc(series->images, series->count * 2 * sizeof(unsigned int) + sizeof(headerString));
             
+            printf("count:  %d", series->count);
+            series->images[2].width = series->images->width;
+            series->images[2].height = series->images->height;
+            /*
             for (int i = 0; i < series->count; i++)
             {
                 series->images[i].width     = series->images->width;
                 series->images[i].height    = series->images->height;
             }
-            
+                */
+            printf("afer for Loop! \n");
             readImagedata(readSource, series, numberOfBytesToRead);
         }
         else
         {
             series = NULL;
         }
-        
+        printf("before read Source\n");
         fclose(readSource);
     }
+    printf("finished reading!\n");
     
     return series;
 }

main.c

@@ -23,7 +23,7 @@ int main(int argc, char *argv[])
             printf("Loaded %u images ... \n", series->count);
 
             model = loadModel(pathToModel);
-
+            
             if(model.numberOfLayers > 0)
             {
                 unsigned char *predictions = NULL;

makefile

@@ -18,8 +18,8 @@ unityfolder = ./unity
 # --------------------------
 # Initiales Programm bauen (zum ausprobieren)
 # --------------------------
-mnist_initial: $(BINARIES)/libmnist_complete.a
-	$(CC) -o mnist $(BINARIES)/libmnist_complete.a $(BINARIES)/libraylib.a ${LDFLAGS}
+#mnist_initial: $(BINARIES)/libmnist_complete.a
+#	$(CC) -o mnist $(BINARIES)/libmnist_complete.a $(BINARIES)/libraylib.a ${LDFLAGS}
 
 # --------------------------
 # Selbst implementiertes Programm bauen

matrix.c

@@ -1,35 +1,238 @@
 #include <stdlib.h>
 #include <string.h>
+#include <stdio.h>
 #include "matrix.h"
 
 // TODO Matrix-Funktionen implementieren
 
 Matrix createMatrix(unsigned int rows, unsigned int cols)
 {
-    
+    Matrix matrix;
+    Matrix empty = {0, 0, NULL};
+
+    if(rows == 0 || cols == 0)
+    {
+        //print("Fehler: Dimensionen muessen >= 1 sein!");
+        return empty;
+    }
+
+    matrix.rows = rows;
+    matrix.cols = cols;
+    matrix.buffer = malloc(rows * cols * sizeof(float));
+
+    if(matrix.buffer == NULL)
+    {
+        //printf("Fehler bei der Speicherreservierung! Keine Matrix erstellt!");
+        matrix.rows = 0;
+        matrix.cols = 0;
+    }
+
+    return matrix;
 }
 
 void clearMatrix(Matrix *matrix)
 {
-    
+    free(matrix->buffer);
+
+    matrix->buffer = NULL;
+    matrix->rows = 0;
+    matrix->cols = 0;
 }
 
 void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
 {
-    
+    if(matrix.buffer == NULL)
+    {
+        //printf("Fehler beim Setzen! Matrix nicht initialisiert");
+        return;
+    }
+
+    if(rowIdx >= matrix.rows || colIdx >= matrix.cols)
+    {
+        //printf("Ungueltige Indizes beim Setzen!\n");
+        return;
+    }
+
+    matrix.buffer[rowIdx * matrix.cols + colIdx] = value;
 }
 
 MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
 {
-    
+    if(matrix.buffer == NULL)
+    {
+        //printf("Fehler beim Lesen! Matrix nicht initialisiert");
+        return 0;
+    }
+
+    if(rowIdx >= matrix.rows || colIdx >= matrix.cols)
+    {
+        //printf("Ungueltige Indizes beim Lesen!\n");
+        return 0;
+    }
+
+    return matrix.buffer[rowIdx * matrix.cols + colIdx];
 }
 
 Matrix add(const Matrix matrix1, const Matrix matrix2)
 {
-    
+    float matrix1Wert = 0;
+    float matrix2Wert = 0;
+    float summe = 0;
+    int broadcasting = 0;
+
+    Matrix broadcastedmatrix1 = {0,0,NULL};
+    Matrix broadcastedmatrix2 = {0,0,NULL};
+
+    if((matrix1.rows != matrix2.rows) || (matrix1.cols != matrix2.cols))
+    {
+        if((matrix1.rows != matrix2.rows) && (matrix1.cols == matrix2.cols))
+        {
+            if(matrix1.rows == 1)
+            {
+                broadcastedmatrix1 = createMatrix(matrix2.rows, matrix2.cols);
+
+                for(int row = 0; row<matrix2.rows; row++)
+                {
+                    for(int col = 0; col<matrix2.cols; col++)
+                    {
+                        matrix1Wert = getMatrixAt(matrix1, 0, col);
+                        setMatrixAt(matrix1Wert, broadcastedmatrix1, row, col);
+                    }
+                }
+
+                broadcasting = 1;
+            }
+            else if(matrix2.rows == 1)
+            {
+                broadcastedmatrix2 = createMatrix(matrix1.rows, matrix1.cols);
+                
+                for(int row = 0; row<matrix1.rows; row++)
+                {
+                    for(int col = 0; col<matrix1.cols; col++)
+                    {
+                        matrix2Wert = getMatrixAt(matrix2, 0, col);
+                        setMatrixAt(matrix2Wert, broadcastedmatrix2, row, col);
+                    }
+                }
+
+                broadcasting = 2;
+            }
+        }
+        else if((matrix1.rows == matrix2.rows) && (matrix1.cols != matrix2.cols))
+        {
+            if(matrix1.cols == 1)
+            {
+                broadcastedmatrix1 = createMatrix(matrix2.rows, matrix2.cols);
+
+                for(int row = 0; row<matrix2.rows; row++)
+                {
+                    for(int col = 0; col<matrix2.cols; col++)
+                    {
+                        matrix1Wert = getMatrixAt(matrix1, row, 0);
+                        setMatrixAt(matrix1Wert, broadcastedmatrix1, row, col);
+                    }
+                }
+
+                broadcasting = 1;
+            }
+            else if(matrix2.cols == 1)
+            {
+                broadcastedmatrix2 = createMatrix(matrix1.rows, matrix1.cols);
+
+                for(int row = 0; row<matrix1.rows; row++)
+                {
+                    for(int col = 0; col<matrix1.cols; col++)
+                    {
+                        matrix2Wert = getMatrixAt(matrix2, row, 0);
+                        setMatrixAt(matrix2Wert, broadcastedmatrix2, row, col);
+                    }
+                }
+
+                broadcasting = 2;
+            }
+        }
+        else
+        {
+        //printf("Fehler bei Addition: Matrix Dimensionen stimmen nicht ueberein!\n");
+        Matrix empty = {0, 0, NULL};
+        return empty;
+        }
+    }
+
+    Matrix ergebnisMatrix;
+
+    switch (broadcasting)
+    {
+        case 0:
+        case 2:
+            ergebnisMatrix = createMatrix(matrix1.rows, matrix1.cols);
+        break;
+
+        case 1:
+            ergebnisMatrix = createMatrix(matrix2.rows, matrix2.cols);
+        break;
+    }
+
+    for(int row = 0; row < ergebnisMatrix.rows; row++)
+    {
+        for(int col = 0; col < ergebnisMatrix.cols; col++)
+        {
+            if(broadcasting == 0)
+            {
+                matrix1Wert = getMatrixAt(matrix1, row, col);
+                matrix2Wert = getMatrixAt(matrix2, row, col);
+                summe = matrix1Wert + matrix2Wert;
+            }
+            else if(broadcasting == 1)
+            {
+                matrix1Wert = getMatrixAt(broadcastedmatrix1, row, col);
+                matrix2Wert = getMatrixAt(matrix2, row, col);
+                summe = matrix1Wert + matrix2Wert;
+            }
+            else if(broadcasting == 2)
+            {
+                matrix1Wert = getMatrixAt(matrix1, row, col);
+                matrix2Wert = getMatrixAt(broadcastedmatrix2, row, col);
+                summe = matrix1Wert + matrix2Wert;
+            }
+
+            setMatrixAt(summe, ergebnisMatrix, row, col);
+        }
+    }
+
+    clearMatrix(&broadcastedmatrix1);
+    clearMatrix(&broadcastedmatrix2);
+
+    return ergebnisMatrix;
 }
 
 Matrix multiply(const Matrix matrix1, const Matrix matrix2)
 {
-    
-}
+    if(matrix1.cols != matrix2.rows)
+    {
+        //printf("Fehler bei Multiplikation: Matrix Dimensionen passen nicht ueberein!\n");
+        Matrix empty = {0, 0, NULL};
+        return empty;
+    }
+
+    float erg = 0;
+
+    Matrix ergebnisMatrix = createMatrix(matrix1.rows, matrix2.cols);
+
+    for(int row = 0; row < ergebnisMatrix.rows; row++)
+    {
+        for(int col = 0; col < ergebnisMatrix.cols; col++)
+        {
+            erg = 0;
+
+            for(int k = 0; k < matrix1.cols; k++)
+            {
+                erg += getMatrixAt(matrix1, row, k) * getMatrixAt(matrix2, k, col);
+            }
+
+            setMatrixAt(erg, ergebnisMatrix, row, col);
+        }
+    }
+
+    return ergebnisMatrix;
+}

matrix.h

@@ -6,7 +6,12 @@
 typedef float MatrixType;
 
 // TODO Matrixtyp definieren
-
+typedef struct
+{
+    int rows;
+    int cols;
+    float *buffer;
+} Matrix;
 
 Matrix createMatrix(unsigned int rows, unsigned int cols);
 void clearMatrix(Matrix *matrix);

neuralNetworkTests.c

@@ -5,10 +5,45 @@
 #include "unity.h"
 #include "neuralNetwork.h"
 
+#define FILE_HEADER_STRING "__info2_neural_network_file_format__" 
 
 static void prepareNeuralNetworkFile(const char *path, const NeuralNetwork nn)
 {
     // TODO
+    
+    FILE *f = fopen(path, "wb");
+    if (!f) return;
+
+    fwrite(FILE_HEADER_STRING, sizeof(char), strlen(FILE_HEADER_STRING), f);
+
+    int inputDim = nn.layers[0].weights.cols;
+    int outputDim = nn.layers[0].weights.rows;
+
+    fwrite(&inputDim, sizeof(int), 1, f);
+    fwrite(&outputDim, sizeof(int), 1, f);
+
+    for (int i = 0; i < nn.numberOfLayers; i++)
+    {
+        Matrix weights = nn.layers[i].weights;
+        Matrix biases  = nn.layers[i].biases;
+
+        int numWeightValues = weights.rows * weights.cols;
+        int numBiasValues   = biases.rows * biases.cols;
+
+        fwrite(weights.buffer, sizeof(MatrixType), numWeightValues, f);
+        fwrite(biases.buffer, sizeof(MatrixType), numBiasValues, f);
+
+        if (i < nn.numberOfLayers - 1)
+        {
+            int nextOutputDim = nn.layers[i + 1].weights.rows;
+            fwrite(&nextOutputDim, sizeof(int), 1, f);
+        }
+    }
+
+    int endMarker = 0;
+    fwrite(&endMarker, sizeof(int), 1, f);
+
+    fclose(f);
 }
 
 void test_loadModelReturnsCorrectNumberOfLayers(void)