Mitch Richling: Random Number Example Programs

Good random number generation is easy with all of the tools available to the modern programmer. Here you will find a number of examples showing how to get random numbers from various sources.

Get it all on github: https://github.com/richmit/ex-random/

lcgPermPowTwo.cpp

>One way to use an LCG to permute a string.

minStdRandGenC.c, minStdRandGenF.f, minStdRandGenPL.pl, minStdRandGenPY.py, minStdRandGenRB.rb, minStdRandGenCL.clisp

32-bit overflow avoiding implementation of the minimal standard random number generator

smplMinStdRandGenRB.rb & smplMinStdRandGenCL.clisp

Arbitrary precision arithmetic implementation of the minimal standard random number generator via native language support.

gmpLCG.c

Arbitrary precision arithmetic implementation of the minimal standard random number generator via GMP

randFileEx.c, randFileC.c, & randFileC.h

How use files full of random bytes as a random number generator. High quality files are available on the web and on CD-ROM.

randPi.c

Approximate the value of Pi with random numbers (uses GMP)

bsdRandomEx.c

How to make use of the BSD random(), srandom(), and srandomdev() functions.

rand48Ex.c

How to make use of the rand48 group of functions found on many UNIX platforms

gmpRandEx.c

Simple use of the random functions in the GMP.

f90Rand.f90

How to use RANDOM_SEED() and RANDOM_NUMBER()in standard Fortran 90

isocRandEx.c

How use the srand() and rand() functions specified in ISO C

clispRandEx.lisp

How to make use of the Common Lisp random number generator.

ranlibExF.f90 & ranlibM.f90

Relatively complete example illustrating the Fortran version of RANLIB and a Fortran 90 module specifying some interfaces to RANLIB.

ranlibExFC.c, ranlibF.h, & ranlibF.c

C version of ranlibExF.f90 using simple C wrappers for the Fortran library.

ranlibExC.c

Short example showing how to use the C version of RANLIB.

prngEx.c

Example showing how to use PRNG

boostRandEx.cpp

Example showing how to use boost. See the makefile.

gslRand.c

Example showing how to use GSL. See the makefile.

opensslPRandEX.c

Trivial use of OpenSSL to generate random numbers.