References: <1343579466.30862.YahooMailNeo@web121004.mail.ne1.yahoo.com>
	<501565D5.4060608@justmoon.de>
Message-ID: <1343580154.34128.YahooMailNeo@web121004.mail.ne1.yahoo.com>
Date: Sun, 29 Jul 2012 09:42:34 -0700 (PDT)
From: Amir Taaki <zgenjix@yahoo.com>
To: "bitcoin-development@lists.sourceforge.net"
	<bitcoin-development@lists.sourceforge.net>
In-Reply-To: <501565D5.4060608@justmoon.de>
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Content-Type: text/plain; charset=us-ascii
Subject: Re: [Bitcoin-development] script tests - invalid script in
	script_valid.json?
Precedence: list
Reply-To: Amir Taaki <zgenjix@yahoo.com>

oh, bitcoin...

Thanks justmoon :D


----- Original Message -----
From: Stefan Thomas <moon@justmoon.de>
To: bitcoin-development@lists.sourceforge.net
Cc: 
Sent: Sunday, July 29, 2012 1:33 PM
Subject: Re: [Bitcoin-development] script tests - invalid script in script_valid.json?

OP_WITHIN is lower-bound-inclusive, but upper bound exclusive, so 1 0 1 WITHIN is false.


bool fValue = (bn2 <= bn1 && bn1 < bn3);

https://github.com/bitcoin/bitcoin/blob/master/src/script.cpp#L854

On 7/29/2012 6:31 PM, Amir Taaki wrote:
> Hi!
>
> Is this a valid script?
>
> ["1 0 1", "WITHIN NOT"]
>
> The first value (1) is tested to make sure it is between the lower (0) and upper (1) value. This evaluates to true, placing on the stack a single byte of [01]. NOT then inverses this to a 0 byte false value of [].
>
> What am I missing here?
>
> Thanks
>
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