"Fredrik Lundh" <[EMAIL PROTECTED]> wrote: > ...... and seriously, under- > standing the various aspects of floats and decimals is utterly trivial > compared to all the nearly-magical things you need to understand to be > able to do geographical calculations at a sub-millimeter scale. heck, > even sub-kilometer stuff is pretty hard to get right ;-)
This is true - have you looked at that thing they call a geode? - horrible... I can never understand why people grab for floats at the first opportunity. To my simple mind, it seems better to work with a sub unit, and to stick to integer arithmetic - if, as Steve said, there is a speed penalty for changing from floats to decimal. then you can make even a cripple processor look good by sticking to integers - unless you run out of precision... - Hendrik -- http://mail.python.org/mailman/listinfo/python-list
