From: Brian Candler <B.Candler@...>
Date: 2007-08-15T14:48:23+09:00
Subject: Re: pack/unpack 64bit Integers

On Wed, Aug 15, 2007 at 06:45:04AM +0100, Brian Candler wrote:
> On Wed, Aug 15, 2007 at 06:50:01AM +0900, Hadmut Danisch wrote:
> > do the pack and unpack procedures support 64 bit signed/unsigned
> > integers?
> 
> The documentation is at http://www.ruby-doc.org/core/
> In the top right-hand frame, click on pack(Array) or unpack(String).

irb(main):001:0> str = [0x8877665544332211].pack("Q")
=> "\021\"3DUfw\210"
irb(main):002:0> str.unpack("Q")
=> [9833440827789222417]
irb(main):003:0> str.unpack("Q").first.to_s(16)
=> "8877665544332211"
irb(main):004:0> str.unpack("q")
=> [-8613303245920329199]
irb(main):005:0> str.unpack("q").first.to_s(16)
=> "-778899aabbccddef"
irb(main):006:0>