trusty (3) randseed.3tcl.gz

Provided by: tcllib_1.15-dfsg-2_all bug

NAME
       tcl::chan::randseed - Utilities for random channels


SYNOPSIS
       package require Tcl  8.5

       package require TclOO

       package require tcl::chan::randseed  ?1?

       ::tcl::randomseed

       ::tcl::combine seed1 seed2

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DESCRIPTION
       The  tcl::chan::randseed  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     SF     Trackers
       [http://sourceforge.net/tracker/?group_id=12883].  Please also report any ideas for enhancements you  may
       have for either package and/or documentation.


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


CATEGORY
       Channels


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