in reply to Re^3: rand() function on Windows systems (pure Perl)
in thread rand() function on Windows systems

Wow! This is even better. Thank you.
  • Comment on Re^4: rand() function on Windows systems (pure Perl)

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Re^5: rand() function on Windows systems (pure Perl)(Correction)
by BrowserUk (Patriarch) on Jan 01, 2017 at 19:12 UTC

    Hm. I forgot that Perl would upgrade the seed to a float; that needs to be clamped back to a 32-bit integer as the new line below:

    {
    my $seed;
    sub ppSrand{ $seed = int( $_[ 0 ] & 32767 ); }
    sub ppRand{
        my $max = shift // 1;
        $seed = ( $seed * 214013 + 2531011 ); 
        $seed &= 0xffffffff;
        return ( ( $seed >> 16 ) & 32767 ) / 32768 * $max;
    }
}

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[d/l]

      Great job man! This last fix cleared all my problems.

      Thank you again.

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