Re^7: rand() function on Windows systems (pure Perl)

One more thing.

Apparently, the random number seed sub is not necessary the srand operator works the same between the old and the new versions. The simplified code below is enough.

my $seed = srand( 555 );
print ppRand( ), "\n"; 

sub ppRand
{
    my $max = shift || 1;
    $seed = ( $seed * 214013 + 2531011 );
    return ( ( $seed >> 16 ) & 32767 ) / 32768 * $max;    
}
[download]

Comment on Re^7: rand() function on Windows systems (pure Perl) Download Code

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Re^8: rand() function on Windows systems (pure Perl) by BrowserUk (Patriarch) on Dec 31, 2016 at 22:55 UTC
You might just as well do: `my $seed = 555; ...` [download] It amounts to the same thing. 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". The enemy of (IT) success is complexity. In the absence of evidence, opinion is indistinguishable from prejudice.	[reply] [d/l]
Re^8: rand() function on Windows systems (pure Perl) by BrowserUk (Patriarch) on Dec 31, 2016 at 20:18 UTC
Hm. srand always returns 1 regardless of its argument on my system: `print srand( $_ ) for 1 .. 10;; 1 1 1 1 1 1 1 1 1 1` [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". The enemy of (IT) success is complexity. In the absence of evidence, opinion is indistinguishable from prejudice.	[reply] [d/l]
Re^9: rand() function on Windows systems (pure Perl) by bakiperl (Beadle) on Dec 31, 2016 at 20:36 UTC
That's strange. I get the same result on my systems using old and new versions of Perl. `print srand( $_ )."\n" for 1 .. 10;; 1 2 3 4 5 6 7 8 9 10` [download]	[reply] [d/l]
Re^10: rand() function on Windows systems (pure Perl) by BrowserUk (Patriarch) on Dec 31, 2016 at 21:44 UTC
From the pod: starting with Perl 5.14, it returns the seed. . My default perl is still 5.10.1. 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". The enemy of (IT) success is complexity. In the absence of evidence, opinion is indistinguishable from prejudice.	[reply]


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