[PD] weighted average (or ?)

Mathieu Bouchard matju at artengine.ca
Wed Jun 16 20:08:05 CEST 2010


On Wed, 16 Jun 2010, Funs Seelen wrote:

> x / y or x * (1 / y) What's the difference? Funs

There is a slight difference. It should stay well below a millionth of the 
result (0,0001 %) but I haven't made a theoretical measurement so I can't 
guarantee it. It's due to rounding numbers. If y is a power of two (2, 4, 
8, 16, ...) then there is no difference at all. For other values of y, the 
amount of error depends on x in a funny pattern.

  _ _ __ ___ _____ ________ _____________ _____________________ ...
| Mathieu Bouchard, Montréal, Québec. téléphone: +1.514.383.3801


More information about the Pd-list mailing list