ASA183
Wichman-Hill Random Number Generator

ASA183 is a FORTRAN90 library which implements a random number generator (RNG), by Wichman and Hill.

ASA183 is Applied Statistics Algorithm 183.

Languages:

ASA183 is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version and a Python version.

Related Data and Programs:

F90_RANDOM, FORTRAN90 programs which illustrate the use of Fortran's random number generator routines.

HALTON, a FORTRAN90 library which computes elements of a Halton quasirandom sequence.

IEEE_UNIFORM_SAMPLE, a FORTRAN90 library which tries to uniformly sample the discrete set of values that represent the legal IEEE real numbers;

NORMAL, a FORTRAN90 library which computes elements of a sequence of pseudorandom normally distributed values.

RANLIB, a FORTRAN90 library which produces random samples from Probability Density Functions (PDF's), including Beta, Chi-square Exponential, F, Gamma, Multivariate normal, Noncentral chi-square, Noncentral F, Univariate normal, random permutations, Real uniform, Binomial, Negative Binomial, Multinomial, Poisson and Integer uniform, by Barry Brown and James Lovato.

RNGLIB, a FORTRAN90 library which implements a random number generator (RNG) with splitting facilities, allowing multiple independent streams to be computed, by L'Ecuyer and Cote.

UNIFORM, a FORTRAN90 library which computes elements of a sequence of pseudorandom uniformly distributed values.

VAN_DER_CORPUT, a FORTRAN90 library which computes elements of a van der Corput quasirandom sequence.

Author:

Original FORTRAN77 version by Brian Wichman and David Hill; FORTRAN90 version by John Burkardt.

Reference:

1. Pierre LEcuyer,
   Efficient and Portable Combined Random Number Generators,
   Communications of the ACM,
   Volume 31, Number 6, June 1988, pages 742-751.
2. Brian Wichmann, David Hill,
   Algorithm AS 183: An Efficient and Portable Pseudo-random Number Generator,
   Applied Statistics,
   Volume 31, Number 2, 1982, pages 188-190.

Source Code:

• asa183.f90, the source code.

Examples and Tests:

• asa183_test.f90, a sample calling program.
• asa183_test.txt, the output file.

List of Routines:

• R4_RANDOM returns a pseudorandom number between 0 and 1.
• R4_UNI returns a pseudorandom number between 0 and 1.
• R8_RANDOM returns a pseudorandom number between 0 and 1.
• R8_UNI returns a pseudorandom number between 0 and 1.
• TIMESTAMP prints out the current YMDHMS date as a timestamp.

You can go up one level to the FORTRAN90 source codes.