The mwc-random package

[Tags:bsd3, library]

This package contains code for generating high quality random numbers that follow either a uniform or normal distribution. The generated numbers are suitable for use in statistical applications.

The uniform PRNG uses Marsaglia's MWC256 (also known as MWC8222) multiply-with-carry generator, which has a period of 2^8222 and fares well in tests of randomness. It is also extremely fast, between 2 and 3 times faster than the Mersenne Twister.

Compared to the mersenne-random package, this package has a more convenient API, is faster, and supports more statistical distributions.


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Properties

Versions 0.4.1, 0.4.1.1, 0.5.0.0, 0.5.1.1, 0.5.1.2, 0.5.1.3, 0.5.1.4, 0.6.0.0, 0.7.0.0, 0.7.0.1, 0.8.0.0, 0.8.0.1, 0.8.0.2, 0.8.0.3, 0.8.0.5, 0.9.0.0, 0.10.0.0, 0.10.0.1, 0.11.0.0, 0.12.0.0, 0.12.0.1, 0.13.0.0, 0.13.1.0, 0.13.1.1, 0.13.1.2, 0.13.2.0, 0.13.2.2, 0.13.3.0, 0.13.3.1, 0.13.3.2, 0.13.4.0
Dependencies base (<5), primitive, time, vector (>=0.5) [details]
License BSD3
Copyright 2009, 2010 Bryan O'Sullivan
Author Bryan O'Sullivan <bos@serpentine.com>
Maintainer Bryan O'Sullivan <bos@serpentine.com>
Stability Unknown
Category Math, Statistics
Home page http://darcs.serpentine.com/mwc-random
Uploaded Mon Jul 12 23:47:54 UTC 2010 by BryanOSullivan
Distributions Arch:0.13.4.0, Debian:0.13.3.2, Fedora:0.13.4.0, FreeBSD:0.13.3.2, LTSHaskell:0.13.4.0, NixOS:0.13.4.0, Stackage:0.13.4.0, Tumbleweed:0.13.4.0
Downloads 62091 total (56 in the last 30 days)
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Status Docs uploaded by user
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Readme for mwc-random

Readme for mwc-random-0.5.1.4

Efficient, general purpose pseudo-random number generation
----------------------------------------------------------

This package provides the System.Random.MWC module, a Haskell library
for generating high-quality pseudo-random numbers in a space- and
time-efficient way.


Performance
-----------

This library has been carefully optimised for high performance.  To
obtain the best runtime efficiency, it is imperative to compile
libraries and applications that use this library using a high level of
optimisation.

Suggested GHC options:

  -O -fvia-C -funbox-strict-fields

To illustrate, here are the times (in seconds) to generate and sum 250
million random Word32 values, on a laptop with a 2.4GHz Core2 Duo
P8600 processor, running Fedora 11 and GHC 6.10.3:

  no flags   200+
  -O           1.249
  -O -fvia-C   0.991

As the numbers above suggest, compiling without optimisation will
yield unacceptable performance.


Get involved!
-------------

Please feel welcome to contribute new code or bug fixes.  You can
fetch the source repository from here:

darcs get http://darcs.serpentine.com/mwc-random


Authors
-------

Bryan O'Sullivan <bos@serpentine.com>