ASA183
Wichman-Hill Random Number Generato

ASA183 is a C library which implements the Wichman-Hill random number generator, as well as a similar generator by L'Ecuyer.

ASA183 is Applied Statistics Algorithm 183. Source code for many Applied Statistics Algorithms is available through STATLIB.

Related Data and Programs:

ASA183 is available in a C version and a C++ version and a FORTRAN77 version and a FORTRAN90 version and a MATLAB version

HALTON is a C++ library of routines which computes elements of a Halton quasirandom sequence.

NORMAL is a C++ library which computes elements of a sequence of pseudorandom normally distributed values.

UNIFORM is a C++ library which computes elements of a sequence of pseudorandom uniformly distributed values.

VAN_DER_CORPUT is a C++ library of routines which computes elements of a van der Corput quasirandom sequence.

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.c, the source code.
• asa183.h, the include file.
• asa183.csh, commands to compile the source code.

Examples and Tests:

• asa183_prb.c, a sample calling program.
• asa183_prb.csh, commands to compile and run the sample program.
• asa183_prb_output.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.

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