making the doc

funcs/filtrage.c

@@ -9,7 +9,22 @@
 /* -------------------------------------------------------------------- */
 int fimg_lissage_2x2(FloatImg *img)
 {
+int		x, y, offset;
 
+#if DEBUG_LEVEL
+fprintf(stderr, ">>> %s ( %p )\n", __func__, img);
+fprintf(stderr,"     type %s size %dx%d\n", img->type,
+					img->width, img->height);
+#endif
+
+for (y=1; y<img->height; y++) {
+
+	for (x=1; x<img->width; x++) {
+
+		offset = x + (y * img->width);
+
+	}
+}
 
 return -1;
 }