Article View: comp.sys.amiga.tech
Article #12377Re: swapping bitmaps using the blitter and not using temporary space
From: Leo 'Bols Ewhac' Schwab
Date: Wed, 26 Apr 1989 08:53
Date: Wed, 26 Apr 1989 08:53
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1283 bytes
In article <8904212115.AA19128@hermes.berkeley.edu> dillon@HERMES.BERKELEY.EDU (Matt Dillon) writes:
> bitmap's A and B
>
> A = A ^ B
> B = B ^ A (B = B ^ A ^ B = A)
> A = A ^ B (A = A ^ B ^ A = B)
>
Gee, Matt, did you just discover this? Even I knew about this one.
Of course, it had to be spelled out to me...
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Leo L. Schwab -- The Guy in The Cape INET: well!ewhac@ucbvax.Berkeley.EDU
\_ -_ Recumbent Bikes: UUCP: pacbell > !{well,unicom}!ewhac
O----^o The Only Way To Fly. hplabs / (pronounced "AE-wack")
"Work FOR? I don't work FOR anybody! I'm just having fun." -- The Doctor
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!bionet!agate!ucbvax!bloom-beacon!apple!well!ewhac From: ewhac@well.UUCP (Leo 'Bols Ewhac' Schwab) Newsgroups: comp.sys.amiga.tech Subject: Re: swapping bitmaps using the blitter and not using temporary space Message-ID: <11421@well.UUCP> Date: 26 Apr 89 08:53:04 GMT References: <8904212115.AA19128@hermes.berkeley.edu> Reply-To: ewhac@well.UUCP (Leo 'Bols Ewhac' Schwab) Organization: Samuel L. Bronkowitz Productions Lines: 16 Quote: "InterPol, and DeutscheBank. FBI, and Scotland Yard." -- Kraftwerk