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Atari coding BBS
| Re: DSP frac arithmetic help |
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Posted by: dml
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Feb,27.2015-18:46
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...one extra thing to watch out for there...
Assuming abs does what you expected (assuming accumulator is fully sign extended first, since abs is a 56bit op) the result of abs(-1.0) is 1.0, which is invalid for the multiplier. So abs may work, but then the mul will not.
But as I said before, if you're squaring the values you don't need abs, and so long as the inputs are -1.0 -> 0.9999 then the mul will work and the result will be +ve.
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Topic
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Posted by
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Date
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DSP frac arithmetic help
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Laurent / Thadoss
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Feb,27.2015-15:03
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Re: DSP frac arithmetic help
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Laurent / Thadoss
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Feb,27.2015-15:08
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Re: DSP frac arithmetic help
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dml
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Feb,27.2015-15:28
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Re: DSP frac arithmetic help
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Laurent / Thadoss
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Feb,27.2015-18:32
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Re: DSP frac arithmetic help
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dml
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Feb,27.2015-18:42
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Re: DSP frac arithmetic help
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dml
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Feb,27.2015-18:46
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Re: DSP frac arithmetic help
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Splash/S1
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Feb,27.2015-20:21
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Re: DSP frac arithmetic help
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dml
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Feb,27.2015-20:38
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Re: DSP frac arithmetic help
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Laurent / Thadoss
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Feb,27.2015-20:42
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Re: DSP frac arithmetic help
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mikro
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Feb,28.2015-10:44
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Re: DSP frac arithmetic help
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dml
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Feb,28.2015-12:35
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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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