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Atari demoscene BBS
| Re: 32 bit muls |
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Posted by: bob_er/mec
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May,17.2014-09:57
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One question: you mentioned that you want multiply signed 16.16*16.16.
How many bits are really used in your case?
There is nice trick on XE, which maybe can be used by you: http://atariage.com/forums/topic/78839-russian-multiplication/?p=975865
Disadvantage is, that you need table with size 16.16+16.16. But maybe you can reduce used bits or you can split to 16*16 muls.
This routine as I know was invented originally on C64.
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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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