man is_planar_bitmap () - Tells if a bitmap is a planar screen bitmap. Allegro game programming library.
NAME
is_planar_bitmap - Tells if a bitmap is a planar screen bitmap. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
int is_planar_bitmap(BITMAP *bmp);
DESCRIPTION
Returns TRUE if bmp is a planar (mode-X or Xtended mode) screen bitmap.