[Axe] Is there any way to get the power of something?

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ThatGuyWithTheStuff
Newbie (Posts: 1)

[Axe] Is there any way to get the power of something?
13 Mar 2016 02:40:25 pm

Apparently Axe changed the ^ to take a module of something, is it still possible to get a power of a number or is it completely removed?

here is the code that I have now

Code:

2->G 


15*(1.15^G)->H

Hooloovoo
1
Member (Posts: 149)

13 Mar 2016 02:42:59 pm

There's no builtin way by default, as far as I can tell. You may want to look at exponentiation by squaring if you want to implement it yourself as a function.

JWinslow23
Power User (Posts: 407)

Re: [Axe] Is there any way to get the power of something?
13 Mar 2016 05:00:00 pm

ThatGuyWithTheStuff wrote:

Apparently Axe changed the ^ to take a module of something, is it still possible to get a power of a number or is it completely removed?

here is the code that I have now

Code:

2->G 


15*(1.15^G)->H

For some reason this reminds me of Cookie Clicker's price-calculating function...but whatever.

I would assume that, for A to the power of B, where B is an integer power >1, you could simply do something like this (this is pseudocode; thinking about the most optimized way to code this in Axe will hurt my brain):

Code:




A -> C


Repeat B-1 times


  C * A -> C


EndRepeat

where C is the result.
I think that kind of thing would be trivial, but one thing's for sure: don't use the ^ operator for it.

lirtosiast
1
Power User (Posts: 338)

13 Mar 2016 06:00:28 pm

Please note that I don't know Axe.

As Mateo said, exponentiation by squaring is faster, and the algorithm is simple:

Code:

def pow_squaring(base,exp):


    result = 1


    while exp:


        if exp%2: result = base * result


        base = base * base


        exp >>= 1


    return result

However, if you're only dealing with small powers and 8.8 fixed point, exponentiation by repeated multiplication will probably be fast enough.

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