linker error with gcc296

[Eljay Love-Jensen]

Hi Nabeel,

My guess is the coordinates.h header file did not properly include all the 
header files it is dependent upon.  (A Very, Very Bad Habit that I strongly 
discourage.)

Assuming C++, is this line near the top of coordinates.h...
#include <cassert>
...?

Also noteworthy, <cassert> and it's C counterpart <assert.h> are not 
idempotent, and probably should not actually be include in any header 
file.  The routine should be moved into the coordinates.cpp file, or (if 
inline or if template so it really should stay in the header file) have the 
assert removed from within the context of a header file.  But that's an 
issue for another time.

HTH,
--Eljay