Re^3: Hexadecimal Exclusive OR

use bignum:

use bignum;

my $var1 = 0x0000805063008357 ;
my $var2 = 0x042426FFFFFFFFFF ;

my $result =  $var1 ^ $var2;
printf "0x%016x\n",$result;
[download]

Gives:

0x00000000ffffffff
[download]

Which goes to show that printf does not support big ints.
Update: improved printf

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Re^4: Hexadecimal Exclusive OR by almut (Canon) on Jun 16, 2010 at 14:36 UTC
Which goes to show that printf does not support big ints. You could write `print $result->as_hex();` [download] because, with the `bignum` pragma in effect, the numbers are upgraded to Math::BigInt objects which have the `as_hex()` method (among others). And to get rid of the `"Hexadecimal number > 0xffffffff non-portable"` warning, you could say `my $var1 = hex("0x0000805063008357");` [download] (`hex()` would need to be imported for perls before 5.9.4)	[reply] [d/l] [select]

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Re^4: Hexadecimal Exclusive OR
by almut (Canon) on Jun 16, 2010 at 14:36 UTC

Which goes to show that printf does not support big ints.

You could write

print $result->as_hex();
[download]

because, with the bignum pragma in effect, the numbers are upgraded to Math::BigInt objects which have the as_hex() method (among others).

And to get rid of the "Hexadecimal number > 0xffffffff non-portable" warning, you could say

my $var1 = hex("0x0000805063008357");
[download]

(hex() would need to be imported for perls before 5.9.4)