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> But doing float with the brick is s-l-o-w, better avoid it if you can.
Mabie Fixed Point is an answer. I dont know how it works but I have a book
that suggests that a decent Fixed Point library can be faster than Floating
Point if there isnt an FPU available.
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Message has 2 Replies:
 | | RE: Float and int
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| (...) I'm doing a seminar at BricksWest on fixed point notation and simple algorithms for square root, trig, etc for BrickOS and pbForth users. The focus will be on the mechanics of the algorithms, the actual code implementation will be a "exercise (...) (22 years ago, 30-Dec-02, to lugnet.robotics.rcx.legos)
| | | Re: Float and int
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| (...) For most brick projects I can think of, it is. If you want to travel your robot around, you will have to deal with sin, cos, tan and square root. First thing you can do is working with tables to avoid "on the fly" sin calculation. Second, you (...) (22 years ago, 30-Dec-02, to lugnet.robotics.rcx.legos)
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Message is in Reply To:
| | Re: Float and int
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| (...) You should look in the gnu gcc compiler documentation for this. Float support is not OS but compiler specific. As I recall, gcc uses IEEE float format, the specification should be found somewhere in the net. But doing float with the brick is (...) (22 years ago, 30-Dec-02, to lugnet.robotics.rcx.legos)
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