Random numbers Post: 302894518

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Homework and Emergencies Homework & Coursework Questions Random numbers Post 302894518 by sea on Tuesday 25th of March 2014 10:29:58 PM

03-25-2014

Registered User

See: Man Page for bash (linux Section 1) - The UNIX and Linux Forums
Section: ARITHMETIC EVALUATION (c&p)

And besides, you already have done adding two numbers.
See the generation of your 2nd random number.

However, i assume you ment, you dont know how to actualy work with the results?
You did set n=$RANDOM which means the variable $n now contains the value of $RANDOM, which is a (not a technical-term-ace) global variable, generating a random number between 0 and 32,7k.

Well, so you need to put that result, that is nicely packed as an expression $(( r %= 200 )) into a variable.
Lets call that variable NUM1, so the (typo-corrected) code would look like NUM1=$(( n %= 200 )).
You then can see the result by echo $NUM1.

Then you can add the numbers using $NUM1 and $variable_b (as another example) instead.
NOTE: Variables are case sensitive and remain with their values in the shell until its exit.
Variables from scripts are not accessable from the shell unless the script exports them.

Hope this helps

Last edited by sea; 03-25-2014 at 11:40 PM..

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math::random::tt800

TT800(3pm)						User Contributed Perl Documentation						TT800(3pm)

NAME

       Math::Random::TT800 - Matsumoto's TT800 Pseudorandom number generator

DESCRIPTION

       This perl extension module implements M. Matsumoto's twisted generalized shift register generator called TT800 as described in his article
       published in ACM Transactions on Modelling and Computer Simulation, Vol. 4, No. 3, 1994, pages 254-266.

SYNOPSIS

	       use Math::Random::TT800;

	       my $tt = new Math::Random::TT800;

	       $value = $tt->next();

	       $ivalue = $tt->next_int();

FUNCTIONS

       new
		   my $tt = new Math::Random::TT800;
		   my $tt = new Math::Random::TT800 @seeds;

	   Create a new TT800 object. Providing seeds is optional.  A TT800 takes 25 integers as seed which must not be all zero.  If less than 25
	   integers are supplied, the rest are taken from the default seed.

       next
		   $value = $tt->next();

	   next returns the next pseudorandom number from the TT800 object as a floating point value in the range [0,1).

       next_int
		   $ivalue = $tt->next_int();

	   next_int returns a integer value filled with 32 random bits.

COPYRIGHT

       This implementation is based on the C code by M. Matsumoto <matumoto@math.keio.ac.jp> available from
       ftp://random.mat.sbg.ac.at/pub/data/tt800.c.

       Converted to a perl extension module and enhancements to support multiple streams of pseudorandom numbers by Otmar Lendl
       <lendl@cosy.sbg.ac.at>.

       Copyright (c) 1997 by Otmar Lendl (Perl and XS code). All rights reserved. This program is free software; you can redistribute it and/or
       modify it under the same terms as Perl itself.

perl v5.14.2							    2002-10-23								TT800(3pm)