Ajout test lecture mnist

src/mnist/mnist.c

@@ -90,7 +90,7 @@ int*** read_mnist_images(char* filename) {
     fread(&width, sizeof(unsigned int), 1, ptr);
     width = swap_endian(width);
 
-    int*** tab = (int***)malloc(sizeof(int**)*width*height);
+    int*** tab = (int***)malloc(sizeof(int**)*number_of_images);
 
     for (int i=0; i < number_of_images; i++) {
         tab[i] = read_image(width, height, ptr);

test/mnist.c

@@ -0,0 +1,52 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <inttypes.h>
+
+#include "../src/mnist/mnist.c"
+
+
+void test_lecture(int nb_images, int width, int height, int*** images, unsigned int* labels) {
+    printf("\tLecture des labels\n");
+    for (int i=0; i < nb_images; i++) {
+        (void)labels[i];
+    }
+    printf("\tOK\n");
+    printf("\tLecture des images\n");
+    for (int i=0; i < nb_images; i++) {
+        for (int j=0; j < height; j++) {
+            for (int k=0; k < width; k++) {
+                (void)images[i][j][k];
+            }
+        }
+    }
+    printf("\tOK\n");
+}
+
+int main() {
+    char* image_file = "data/t10k-images-idx3-ubyte";
+    char* labels_file = "data/t10k-labels-idx1-ubyte";
+    printf("Chargement des paramètres\n");
+
+    int* parameters = read_mnist_images_parameters(image_file);
+    int nb_images = parameters[0];
+    int height = parameters[1];
+    int width = parameters[2];
+
+    printf("OK\n");
+    printf("Chargement des images\n");
+
+    int*** images = read_mnist_images(image_file);
+
+    printf("OK\n");
+    printf("Chargement des labels\n");
+
+    unsigned int* labels = read_mnist_labels(labels_file);
+
+    printf("OK\n");
+    printf("Vérification de l'accès en lecture\n");
+
+    test_lecture(nb_images, width, height, images, labels);
+
+    printf("OK\n");
+    return 1;
+}