From: Harris Reynolds <hreynolds2@...>
Date: 2006-06-10T07:22:07+09:00
Subject: Re: Converting a Float back to bytes

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Thanks Ryan...  I had orignally thought this shouldn't be any harder than calling unpack coming from the oposite direction; nonetheless it didn't dawn on me to simply stuff the float into an array and call pack.
 
Gotta love learning a new language!  Thanks,
 
~harris

 
----- Original Message ----
From: Ryan Leavengood <leavengood@gmail.com>
To: ruby-talk ML <ruby-talk@ruby-lang.org>
Sent: Friday, June 9, 2006 5:55:56 PM
Subject: Re: Converting a Float back to bytes


On 6/9/06, Harris Reynolds <hreynolds2@yahoo.com> wrote:
> This is good stuff.  I am now getting the correct Float object (21.0) from a string of bytes
> ("@5\000\000\000\000\000\000").  Now... here is a question... is there an easy way to go
> from the Float back to bytes.  This seems like it may be much more difficult.
>
> something like this...
>
> float_object = 21.0
> bytes = SOME_API_HERE.convert(float_object)

Hi Harris,

Keep in mind for things like this you always have the method pair
Array#pack and String#unpack:

C:\P4WS>irb
irb(main):001:0> f = 21.0
=> 21.0
irb(main):002:0> b = [f].pack("D")
=> "\000\000\000\000\000\0005@"
irb(main):003:0> b.unpack("D")
=> [21.0]

Ryan
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