note
BrowserUk
<blockquote><i></i></blockquote>
<p>Try this -- 'scuse the formatting, but there's no good way to format it. It produces the same results on 32-bit and 64-bit Perls for one randomly generated set of input data:
<code>
for( my $h = 16; $h < 80; $h++ ) {
$i[$h] = a2(
(
(
(
(
( $i[$h - 3] ^ $i[$h - 8] ) & 0xffffffff
) ^ $i[$h - 14]
) & 0xffffffff
) ^ $i[$h - 16]
) & 0xffffffff
, 1
);
}
print "@i";
sub a2 {
my ($b, $a) = @_;
my $c = $b >> 32 - $a;
my $e = (1 << 32 - $a) - 1;
my $d = $b & $e;
return tos($d << $a | $c);
}
sub tos {
my ($num) = @_;
$num = $num - 4294967296 if $num > 4294967295;
$num = $num + 4294967296 if $num < -2147483648;
if ($num >= 0) {
$num = $num - 2 ** 32 if ($num >> 31);
}
return $num;
}
</code>
<div class="pmsig"><div class="pmsig-171588">
<hr />
<font size=1 >
<div>With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'</div>
<div>Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.</div>
<div>"Science is about questioning the status quo. Questioning authority". </div>
<div>In the absence of evidence, opinion is indistinguishable from prejudice.
<p align=right>[http://www.theregister.co.uk/2011/11/29/sas_versus_world_programming/|The start of some sanity?]</p></div>
</font>
</div></div>
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