al_clone_bitmap - Allegro 5 API

       Create  a  new bitmap with al_create_bitmap(3alleg5), and copy the pixel data from the old bitmap across.
       The newly created bitmap will be created with the current new bitmap flags, and not the  ones  that  were
       used to create the original bitmap.  If the new bitmap is a memory bitmap, its projection bitmap is reset
       to be orthographic.

       al_clone_bitmap - Allegro 5 API

al_create_bitmap(3alleg5),      al_set_new_bitmap_format(3alleg5),      al_set_new_bitmap_flags(3alleg5),
       al_convert_bitmap(3alleg5)

Allegro reference manual                                                                al_clone_bitmap(3alleg5)

              #include <allegro5/allegro.h>

              ALLEGRO_BITMAP *al_clone_bitmap(ALLEGRO_BITMAP *bitmap)