gjrand random numbers
Gjrand is free software (GPL v2 or v3) hosted at SourceForge.
The SourceForge project page:
Downloads.
Pseudo-random number generator.
Random number test suite.
The gjrand project is about pseudo-random number generation for the purpose
of simulations, Monte-Carlo integration, computer games and the like. It is
intended that statistical properties be extremely good for such purposes.
However, gjrand is not suitable as a high security random number generator
for cryptography, the state lottery draw, etc.
Currently, gjrand provides a C programmer's library with generators for:
- Uniform integers
- Uniform floating point
- Normal distribution
- "Student" T distribution
- Poisson distribution
- and a few others
and also statistical testing programs that can be used to test the gjrand
library, or other supposedly random data:
- A test suite for uniform bits
- A test suite for uniform floating point numbers
- A test suite for normally distributed numbers
- Minor tests for other gjrand features
Current status
As of late 2009 the latest version released is 3.0.1.0 which is described
as "alpha-test". It can't go "beta-test" until i receive reports from
alpha testers, which has never happened yet. There were known bugs in almost
all versions up to 1.2.0.0, fixed in 1.3.0.0 and later. A more minor bug
was in 3.0.0.0 only.
Earlier versions were developed and tested on a 32bit X86 GNU/Linux platform,
and recent ones on 64bit X86 GNU/Linux. As far as i know the current version
hasn't been tested on anything else.
Version 1.1.0.0 and a few earlier ones were tested on most of the SourceForge
compiler farm machines. These were all approximately Posix (Linux, BSD,
MAC OS X, Solaris) with Gcc. The compile farm shut down in February 2007 so
such portability testing is no longer possible. If you have portability
problems or fixes please post on gjrand SourceForge forums.
If attempting to port it will be easiest with an ANSI C compiler with
support for at least a few C99 features, stdint.h especially. Gcc has had
this for years. Also it will be easiest on POSIX or near approximation. If
using MS-Windows, Cygwin with GCC is recommended (though i haven't tried even
this). Other options may need significant porting effort.
In case you're looking for it, Geronimo Jones' nda test is part of the gjrand
package. Download as above, unpack the tar file, it's in subdirectory
testunif/src .