#! perl -slw
use strict;
use Data::Dump qw[ pp ];
use threads;
use threads::shared;

my $rand :shared = chr(0)x4;

async( sub {
    use bytes;
    my $tid = shift;
    --vec( $rand,$tid,8) while 1;
}, $_ )->detach for 0 .. 3;

our $M //= 24;
our $N //= 1e4;

my %stats;
++$stats{ unpack( 'V', $rand ) % $M } for 1 .. $N;

pp \%stats;

__END__
C:\test>rand
{
  "0" => 499,
  1   => 380,
  2   => 296,
  3   => 450,
  4   => 373,
  5   => 395,
  6   => 465,
  7   => 445,
  8   => 423,
  9   => 465,
  10  => 446,
  11  => 515,
  12  => 433,
  13  => 424,
  14  => 441,
  15  => 423,
  16  => 364,
  17  => 308,
  18  => 403,
  19  => 373,
  20  => 516,
  21  => 368,
  22  => 352,
  23  => 443,
}

[download]
With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re: generate random number without using any built in function in perl? by BrowserUk
in thread generate random number without using any built in function in perl? by anurag_perl

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.