Even if you follow broomdusters advice, you still have a big problem. The internal numbers presentation automatically changes a number to floating point if it gets too big. Anding floating point numbers is quite useless as you can see here:

$maskResult = 4000000000000000 & 4000000000000000;
print $maskResult,"\n";
####prints
4294967295

$maskResult = 1000000000000000 & 4000000000000000;
print $maskResult,"\n";
####prints
4294967295

[download]

If you want to use really large integers you need bigint or Math:BigInt

In reply to Re: Bitwise Operator Error by jethro
in thread Bitwise Operator Error by ravishi

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