To the power of?

PatM

I've been searching the prop manual but I can't seem to find an exponent operator. How do you do something like

val := 10 ^ 6 ?

Yes, I learned quickly that the carat isn't what I need [noparse];)[/noparse]


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Paul Baker

You can use Cam Tompson's Floating point library availible from the object exchange.

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Paul Baker
Propeller Applications Engineer

Parallax, Inc.

Leon

If it's an integer power you could use a loop to calculate it, as is done with the C pow function.

Leon

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Amateur radio callsign: G1HSM
Suzuki SV1000S motorcycle

PatM

Actually, a loop was exactly what I used last night so I could continue experimenting. Guess I'll keep it [noparse];)[/noparse]

rjo_

Depends on exactly what you are doing.

If you need isolated values of a^b then use loops... if you need results from a tight series of a values, then there is a way to speed up the calculations. As a crude "rule of thumb," for "this" to be of any advantage the number of consecutive values of a needs to exceed the average value of b.

Example shows 100 consecutive values of x^2 and x^3. Since series of a can start anywhere... it is usually necessary to caluculate seed values from a limited series of looped calculations.

rjo_

oops... I didn't see my spin file... "There it is[noparse]:)[/noparse]