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From:	wolf <wolfzinke AT gmx DOT net>
Newsgroups:	comp.os.msdos.djgpp
Subject:	bitwise operators
Date:	Mon, 10 Dec 2001 16:27:05 +0100
Organization:	Rechenzentrum der Universitaet Freiburg, Germany
Lines:	26
Message-ID:	<3C14D449.4040703@gmx.net>
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

Hi,

For calculating the value of a pixel i am using shift operators this way:


#define CALCOLOR(r,g,b)  (b + (g<<8) + (r <<16))

int main (void)
{
     unsigned int color;
     int r,g,b;

     color = CALCOLOR(r,g,b,);
}


Now i need the values of r,g,b back again. What do i have to do to 
racalculate the values?

rrecalc = ???
grecalc = ???
brecalc = ???

I would be a lucky guy if someone is able to help.
Thanks

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