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Problems with using pow

Posted on 2006-11-10
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Last Modified: 2006-11-18
I have a small problem with using pow.

public class Main {
   
    static public int bin2int(int[] array) {
        int value=0;        
        System.out.println("al: "+array.length);
        for(int i = 0, i2 = array.length-1; i < array.length; i++, --i2) {
            value += Math.pow(array[i]*2,i2); ///////////// here the problem is
            System.out.println(array[i]+"*2^"+i2+"="+value);
        }
        System.out.println("dec val: "+value);
        return value;
    }
   
    public static void main(String[] args) {
        // TODO code application logic here
        int buffer[] = {0,0,0};
        bin2int(buffer);
    }
}

gives me:

al: 3
0*2^2=0
0*2^1=0
0*2^0=1
dec val: 1

It should not give me 1 when using pow(0*2,0). How to deal with this?
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Question by:m-jansen
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4 Comments
 
LVL 86

Accepted Solution

by:
CEHJ earned 250 total points
ID: 17914109
>>It should not give me 1 when using pow(0*2,0). How to deal with this?

Yes, x^0=1
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Author Comment

by:m-jansen
ID: 17914140
sorry I got the solution... now
value += array[i]*Math.pow(2,i2);
0
 

Author Comment

by:m-jansen
ID: 17914148
I'll accept your answer anyway
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LVL 86

Expert Comment

by:CEHJ
ID: 17914197
:-)
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