bionic (3) randseed.3tcl.gz

Provided by: tcllib_1.19-dfsg-2_all bug

NAME

       tcl::randomseed - Utilities for random channels

SYNOPSIS

       package require Tcl  8.5

       package require TclOO

       package require tcl::randomseed  ?1?

       ::tcl::randomseed

       ::tcl::combine seed1 seed2

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DESCRIPTION

       The   tcl::randomseed   package  provides  a  a  few  utility  commands  to  help  with  the  seeding  of
       tcl::chan::random channels.

API

       ::tcl::randomseed
              This command creates returns a list  of  seed  integers  suitable  as  seed  argument  for  random
              channels.  The  numbers  are  derived  from  the  process  id, current time, and Tcl random number
              generator.

       ::tcl::combine seed1 seed2
              This command takes to seed lists and combines them into a single list by XORing them  elementwise,
              modulo  256. If the lists are not of equial length the shorter of the two is padded with 0s before
              merging.

BUGS, IDEAS, FEEDBACK

       This document, and the package it describes, will undoubtedly contain bugs and  other  problems.   Please
       report  such  in  the category virtchannel of the Tcllib Trackers [http://core.tcl.tk/tcllib/reportlist].
       Please also report any ideas for enhancements you may have for either package and/or documentation.

       When proposing code changes, please provide unified diffs, i.e the output of diff -u.

       Note further that attachments are strongly preferred over inlined patches. Attachments  can  be  made  by
       going  to the Edit form of the ticket immediately after its creation, and then using the left-most button
       in the secondary navigation bar.

KEYWORDS

       /dev/random, merge, random, reflected channel, seed, tip 219, virtual channel

CATEGORY

       Channels

       Copyright (c) 2009 Andreas Kupries <andreas_kupries@users.sourceforge.net>