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[Freeciv-Dev] Re: (PR#9637) Ocean numbers

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To: Gregory.Berkolaiko@xxxxxxxxxxxxx, mburda@xxxxxxxxx
Subject: [Freeciv-Dev] Re: (PR#9637) Ocean numbers
From: "Jason Short" <jdorje@xxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 12 Aug 2004 17:59:13 -0700
Reply-to: rt@xxxxxxxxxxx 
<URL: http://rt.freeciv.org/Ticket/Display.html?id=9637 >

Jason Short wrote:
> <URL: http://rt.freeciv.org/Ticket/Display.html?id=9637 >
> 
> Perhaps we should have an XOR macro?  Either
> 
>   #define XOR(p, q) (p || q) && !(p && q)
> 
> or maybe
> 
>   #define XOR(p, q) (assert(!!p == p && !!q == q), p ^ q)

or even

   #define XOR(p, q) ((!p) ^ (!q))

jason
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