+int save_to_file(char *file,display *display)
+{
+ int save_file_fd;
+
+ if((save_file_fd=open(file,O_CREAT|O_WRONLY|O_TRUNC))<0)
+ {
+ puts("cannot open save file");
+ return -23;
+ }
+ if(write(save_file_fd,&(display->max_x),sizeof(u32))<sizeof(u32))
+ {
+ puts("failed saving max x");
+ return -23;
+ }
+ if(write(save_file_fd,&(display->max_y),sizeof(u32))<sizeof(u32))
+ {
+ puts("failed saving max y");
+ return -23;
+ }
+ if(write(save_file_fd,&(display->max_z),sizeof(u32))<sizeof(u32))
+ {
+ puts("failed saving max z");
+ return -23;
+ }
+ if(write(save_file_fd,display->cell_p,display->max_x*display->max_y*display->max_z*sizeof(cell))!=display->max_x*display->max_y*display->max_z*sizeof(cell))
+ {
+ puts("saving file failed");
+ return -23;
+ }
+ close(save_file_fd);
+ puts("saved file");
+ return 23;
+}
+
+int distrib_c_conc(cell *cell_p,int c_c0,int c_slope,u32 c_conc,u32 x_max,u32 y_max,u32 z_max)
+{