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how to do square root or x^2 in the dsp component.

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how to do square root or x^2 in the dsp component.

Postby joejoe » Wed Apr 16, 2014 2:22 am

I've been trying to do a exponential calculation in the dsp command.

-It seems we have the exp(x) expression, but this doesn't seem to do what it should. (see attached)

-Normally on a calculator such as the TI-83 we can do 2^2= 4. Doing this in the DSP component the IDE willregisters it as a expression as it turns pink however I cant seem to find the necessary syntax to get a valid expression.

Any help is greatly appreciated.
Attachments
exp test.fsm
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Re: how to do square root or x^2 in the dsp component.

Postby joejoe » Wed Apr 16, 2014 3:13 am

looks like I figured it out!

y = pow(x,2) where x = base and 2 is the exponent.
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Re: how to do square root or x^2 in the dsp component.

Postby martinvicanek » Wed Apr 16, 2014 8:05 am

To save CPU load, use x*x instead of pow(x,2), Use sqrt(x) instead of pow(x,0.5). There are also optimized modules for powers with arbitrary exponents.
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