osx man page for is_inside_bitmap

is_inside_bitmap(3alleg4)					  Allegro manual					 is_inside_bitmap(3alleg4)

NAME

       is_inside_bitmap - Tells if a point is inside a bitmap. Allegro game programming library.

SYNOPSIS

       #include <allegro.h>

       int is_inside_bitmap(BITMAP *bmp, int x, int y, int clip);

DESCRIPTION

       Returns	non-zero  if  point  (x, y) lies inside the bitmap. If `clip' is non-zero, the function compares the coordinates with the clipping
       rectangle, that is it returns non-zero if the point lies inside the clipping rectangle or if clipping is disabled for the bitmap. If `clip'
       is zero, the function compares the coordinates with the actual dimensions of the bitmap.

SEE ALSO

       set_clip_rect(3alleg4), set_clip_state(3alleg4), getpixel(3alleg4)

Allegro 							   version 4.4.2					 is_inside_bitmap(3alleg4)