You can edit this page using wiki syntax for markup.

Article contents:[[tags: manual]] [[toc:]] == Module (chicken random) This module provides access to entropy (as provided by the operating system) and a pseudo random number generator. On UNIX systems entropy is by default obtained from {{/dev/urandom}}. On Linux, the {{getrandom(2)}} system call is used instead, if available. On OpenBSD it is {{arc4random_buf(3)}}, on Windows {{RtlGenRandom}}. The pseudo random number generator is an implementation of the [[https://en.wikipedia.org/wiki/Well_equidistributed_long-period_linear|WELL]] algorithm. ==== set-pseudo-random-seed! <procedure>(set-pseudo-random-seed! SEED [SIZE])</procedure> Set seed for the PRNG from the at most {{SIZE}} bytes of {{SEED}}. which should be a byte vector or a string containing random data. If {{SIZE}} is not given, it defaults to the size of {{SEED}}. If {{SIZE}} (or the size of {{SEED}}) is below the required size of the random state used by the PRNG, then it will necessarily be initialized in a less random manner as possible. ==== pseudo-random-integer <procedure>(pseudo-random-integer RANGE)</procedure> Returns a uniformly distributed pseudo random integer between 0 and {{RANGE-1}}, which may be a big integer. ==== pseudo-random-real <procedure>(pseudo-random-real)</procedure> Returns a uniformly distributed pseudo-random inexact number between 0 and 1. ==== random-bytes <procedure>(random-bytes [BUF [SIZE]])</procedure> Returns random bytes from the available entropy source. If {{BUF}} is given, it should be a string or byte vector which will be filled with up to {{SIZE}} random bytes. {{SIZE}} defaults to the size of the {{BUF}} argument. If no arguments are given, {{random-bytes}} returns a freshly allocated byte vector of sufficient size to be used as a seed for {{set-pseudo-random-seed!}}. --- Previous: [[Module (chicken process-context)]] Next: [[Module (chicken read-syntax)]] Description of your changes:

I would like to authenticate

Spam control

What do you get when you add 11 to 18?