Description
Random number sequences generated in Delphi using the native Random function leave much to be desired. By default the same number sequence is produced each time the parent application is run. Matters can be improved to a certain extent by seeding the random number generator using the system clock by calling the Randomize function.
However, this does not change the fact that the algorithm used is quite simplistic. Algorithms of greater complexity that claim to yield more random sequences abound. However, it is not really necessary to code such an algorithm. Windows comes with an intrinsic random number generator in the form of the CoCreateGUID function. We demonstrate how it can be used with a minimum of coding to create a truly robust sequence of pseudo-random numbers.
Related:
Delphi - Pseudo-Random Numbers - Random - Randomize - Randseed
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Documentation of algorithms in the GNU Scientific Library Reference Manual. - Gaussian Random Number Generator
Code to generate autocorrelated Gaussian variates by S. Tim Hatamian. - Segobit Software: Random Number Generator Pro
Windows application to generate several random numbers in a given range, subject to constraints like excluding certain... - Mersenne Twister Pseudo Random Number Generator Classes
Offers multiple replacement implementations for java.util.Random. [Open Source] - Netlib: Random Number Generators
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Algorithms for good random number generators with theoretical discussion and software examples. - True Random Number Service
Random number generator with a CORBA IDL interface. Numbers are generated with atmospheric noise. - Hardware Random Number Generators
Report on testing and applications by Robert Davies, October 2000.