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

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