Hello,
I'm making an app which requires doing math on some arbitrary large numbers. Since math is usually my achilles heal, I have no idea how to do this.
Specifically, i have a byte[] number and I'm trying to implement these two functions:
byte[] root(byte[] number,int radix)
byte[] pow(byte[] base,int power)
can someone give me a clue on how to do this?
> Hello,
> I'm making an app which requires doing math on some
> arbitrary large numbers. Since math is usually my
> achilles heal, I have no idea how to do this.
You mean Achilles heel? Apparently spelling isn't a strong suit, either.
> Specifically, i have a byte[] number and I'm trying
> to implement these two functions:
Who told you that a byte array would be a good way to go?
Ever thought about starting with arithmetic and working your way up?
What happened to abstraction? Shouldn't you create a class that hides the fact that you're using a byte array or something else?
> byte[] root(byte[] number,int radix)
Newton Raphson iteration is a good place to start for roots:
http://mathworld.wolfram.com/search/
> byte[] pow(byte[] base,int power)
If it's really an integer power, just loop "power" times and multiply the number by itself each time. Not too difficult.
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