Subject:
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Re: Expression limitations w/bytecode
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 19 Jan 1999 02:33:15 GMT
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Original-From:
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Matthew D. Stock <stock@=AvoidSpam=perdix.acsu.buffalo.edu>
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Viewed:
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1278 times
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Dave Baum writes:
> The firmware does support basic arithmetic operations. You can use them
> in NQC like this...
Ah, my mistake. I had tried something like "if (a - b > 20)" using NQC,
and it failed. I referred to the docs, and my read of the expression stuff
seemed to tell me that something like you describe wasn't valid. I had
interpreted "var -= value" to mean that you could add and subtract
constants, but not other variables.
I'm better now. :-)
Thanks again!
-Matt
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 1 Reply:
 | | Re: Expression limitations w/bytecode
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| One more note on arithmetic... The firmware supports operations where the second operand is either a constant or a variable, but not other sources (such as input values, timers, etc). Present versions of NQC don't check this, so code like "a -= (...) (26 years ago, 19-Jan-99, to lugnet.robotics)
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Message is in Reply To:
| | Re: Expression limitations w/bytecode
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| (...) The firmware does support basic arithmetic operations. You can use them in NQC like this... int a, b; task main { a = IN_1; b = IN_1; b -= a; } Dave p.s. As a side note, NQC does not support stuff like "a=b+c", but this is due to concurrency (...) (26 years ago, 19-Jan-99, to lugnet.robotics)
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