Provided by: allegro4-doc_4.4.2-4_all 

NAME
is_same_bitmap - Tells if two bitmaps describe the same drawing surface. Allegro game programming
library.
SYNOPSIS
#include <allegro.h>
int is_same_bitmap(BITMAP *bmp1, BITMAP *bmp2);
DESCRIPTION
Returns TRUE if the two bitmaps describe the same drawing surface, ie. the pointers are equal, one is a
sub-bitmap of the other, or they are both sub-bitmaps of a common parent.
SEE ALSO
create_sub_bitmap(3alleg4)
Allegro version 4.4.2 is_same_bitmap(3alleg4)