| Overview |  |
Copyright © 2009 Mr Buzz, Inc.
Authors: Jacob Perkins.
| elfhash/1 | Calculates ELFHash of character list. |
| mean/1 | Calculates mean of list of numbers. |
| moving_avg/3 | Calculates moving average given a Ratio. |
| random/1 | Drop in replacement for random:uniform. |
| scale/1 | Ensures N is between 0 and 1. |
| scale/3 | Ensures N is between Min and Max. |
elfhash(List::list() | binary()) -> integer()
Calculates ELFHash of character list. See Hash Functions.
mean(Nums::[N::number()]) -> number()
Calculates mean of list of numbers. The mean of empty list is 0.
See also: lists:sum/1.
moving_avg(Old::number(), New::number(), Ratio::float()) -> number()
Calculates moving average given a Ratio. The new average is (Old * Ratio) + (New * (1 - Ratio)).
random(N::integer()) -> integer()
Drop in replacement for random:uniform. Provides 'extra randomness' by seeding random with a timestamp before calling random:uniform.
See also: random.
scale(N::float()) -> float()
Equivalent to scale(N, 0.0, 1.0).
Ensures N is between 0 and 1.
scale(N::number(), Min::number(), Max::number()) -> number()
Ensures N is between Min and Max.
See also: lists:max/1, lists:min/1.
Generated by EDoc, Jul 14 2009, 14:06:01.