Re^4: reading packed unsigned long long

Hi - ..I get "Invalid type in unpack: 'Q'" ..you're right, "J" & "j" don't cut it either... ...thanks for the offer, what's the standard byte order? I also want to look into "Math::BigInt" - I've never heard of this: is it a library of Perl functions?

Comment on Re^4: reading packed unsigned long long

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Re^5: reading packed unsigned long long by ikegami (Patriarch) on Jul 15, 2009 at 15:45 UTC
what's the standard byte order? There isn't one. You're either using your local machine's byte order (which happens to be big-endian) or you're using big-endian explicitly. The question was whether you want to use the local machine's byte order (whatever it might be) or to use big-endian explicitly. I also want to look into "Math::BigInt" - I've never heard of this: is it a library of Perl functions? Math::BigInt	[reply]
Re^6: reading packed unsigned long long by Spooky (Beadle) on Jul 21, 2009 at 13:59 UTC
It may not be the most efficient Perl but I was able to get the results I wanted using the following (not without some trial and error!) - $raw = '000000000000174f0100000000004a000000000000004a'; $x = hex(unpack("H",(substr($raw,9,6)))) ; $y = hex(unpack("H",(substr($raw,15,8)))) ; The output was the integer value of 74 in both cases which is what I was shooting for...	[reply]