raise to the nth power

eddymouse

How can I with Netlinkx to raise to the nth power a number? thanks a lot
alessandro

DHawthorne

There is no built-in function for it, you have to roll your own. If you are dealing with integer exponents, you could just use a FOR loop - if you need fractional, it gets messy. I have a routine I am using for that, but I have to warn you, it is a horrible CPU hog. I'll attach it; but be warned, it can take a long time to run, and nothing else in your code will run meanwhile. It could probably be tweaked; I stopped when I got it "good enough." The original source is cited in the comments.

mpullin

eddymouse wrote: »

How can I with Netlinkx to raise to the nth power a number? thanks a lot
alessandro

DHawthorne wrote: »

There is no built-in function for it, you have to roll your own.

Ooh, we have multi-quote now. Neat!

Because I sometimes use bitwise math in my NetLinx programs, I wrote a function to find 2^n. Here it is:

DEFINE_FUNCTION INTEGER POW2(INTEGER n){
    // given n, return 2^n
    if(n == 0) return 1;
    else return 2 * POW2(n-1);
}

If you need to raise other numbers to the n besides 2, you'll need to add another parameter.