2.9. Making Numbers Even More RandomProblemYou want to generate numbers that are more random than Perl's random numbers. Limitations of your C library's random number generator seeds will sometimes cause problems. The sequence of pseudorandom numbers may repeat too soon for some applications. SolutionUse a different random number generator, such as those provided by the Math::Random and Math::TrulyRandom modules from CPAN: use Math::TrulyRandom; $random = truly_random_value(); use Math::Random; $random = random_uniform(); Discussion
Perl uses the standard C library routine
rand
(3) to generate pseudorandom numbers. (This can be changed at build time, however.) Some implementations of the The Math::TrulyRandom module uses the inadequacies of your system's timers to generate the random numbers. This takes a while, so it isn't useful for generating a lot of random numbers.
The Math::Random module uses the See Also
The
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