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Atari demoscene BBS
| Re: 32 bit muls |
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Posted by: ggn
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May,17.2014-07:58
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Weird, nobody replied to this yet?
This topic has been also been bugging me for a while also but up till now I didn't have reason to dig it up. I did google around and found some pages about this problem like:
http://documentation.renesas.com/doc/products/mpumcu/apn/rej06b0061_h8300htinyan.pdf
http://trac.bookofhook.com/bookofhook/trac.cgi/wiki/IntroductionToFixedPointMath
http://stackoverflow.com/questions/15123638/fixed-point-multiplication-without-64-bit-temporary
http://www.intel-assembler.it/portale/5/fixed-point-math-in-c-and-asm/fixed-point-math-in-c-and-asm.asp
http://gameprogrammer.com/4-fixed.html (also has a link to download source code)
http://www.yaldex.com/games-programming/0672323699_ch11lev1sec5.html
More or less they all suggest doing 4 multiplications and shift the result (especially the stackoverflow page). Is there any reason you can't use data registers to store intermediate results instead of writing them to ram?
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[All messages in this thread] [Start new thread]
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Topic
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Posted by
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Date
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32 bit muls
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PeyloW
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May,15.2014-22:51
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Re: 32 bit muls
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ggn
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May,17.2014-07:58
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Re: 32 bit muls
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ggn
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May,17.2014-08:00
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Re: 32 bit muls
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PeyloW
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May,17.2014-15:05
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Re: 32 bit muls
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PeyloW
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May,18.2014-17:55
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Re: 32 bit muls
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bob_er/mec
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May,17.2014-09:57
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Re: 32 bit muls
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Alien / ST-CNX
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May,21.2014-21:14
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Re: 32 bit muls
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PeyloW
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May,22.2014-10:52
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Re: 32 bit muls
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PeyloW
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May,23.2014-10:10
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Re: 32 bit muls
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dml
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May,23.2014-22:29
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What's the anti-troll code?
That's your personal code to be able to add comments and messages on the dhs.nu site.
Don't have a code or forgot it? Fix it here.
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