unpacking &* packing

Spooky has asked for the wisdom of the Perl Monks concerning the following question:

I have the following hex string: '00000000000001ad013fffffff3fffffff'. I use the following unpack: 'NNCNd' which gives me '0 429 1 1073741823'. What I was expecting was '0 429 1 1073741823 1073741823' How should I tweak my unpack command?

Comment on unpacking &* packing

Replies are listed 'Best First'.
Re: unpacking &* packing by JavaFan (Canon) on Jul 13, 2009 at 12:37 UTC
Did you try "NNCNN"?	[reply]
Re^2: unpacking &* packing by Spooky (Beadle) on Jul 13, 2009 at 14:39 UTC
WOW! ..that was too easy! ..thanks!!	[reply]
Re: unpacking &* packing by BrowserUk (Patriarch) on Jul 13, 2009 at 14:45 UTC
Assuming a 32-bit Perl (and the prevalent expectation of char == byte), `NNCNd` would require 11(C) + 34(N) + 1*8(d)== 21 bytes of data, and you only have 17. Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice. RIP PCW	[reply] [d/l]