---- U wrote:----
 
Generally speaking one can say:
- computers really like things that are a power of 2
- people that programs to much assembly or makes digital electronics
  starts dreaming binary and hexadecimal numbers
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2 good generalizations ;^), if you look hard enough you could find sum comp.
programs which use symbols ( such as PI) for infinit percision.  But for
most applications ( such as Csound compilers ) one can get away with rounding,

approximating, or interpelation.
( your second comment brings me back to a nightmare I had when I was taking
3rd semester of calculas where limit's symbols were tormenting me b4 a test ;)