Can pow be called by a user function?

[buzzhorton]

I get Reference error: POW not defined
when I run this:

// rnd function - round to two places
function rnd(value) { // Round the price to iDecimals digits

value =  value * pow(10, iDecimals);

    return Math.round(value, iDecimals) / pow(10, iDecimals);
} 

I looked pow up in the knowledgebase:

pow(base, exponent) returns base to the power of exponent

So what am I doing wrong/not doing right?

Thanks in Advance.


P.S. these decimals are driving me crazy!

[ACM]

buzzhorton
pow is a method of the Math Object. The correct syntax is Math.pow()
Alex

[buzzhorton]

Thanks.

I guess you figured that I could figure it out...

// rnd function - round to two places
function rnd(value, iDecimals ) { // Round the price to iDecimals digits

value =  value * Math.pow(10, iDecimals);

    return Math.round(value, iDecimals) / Math.pow(10, iDecimals);
} 

But I have a question.

I had to pass iDecimals as a parameter.

Is that because a function can only "see" what is passed to it?

Thanks again

[ACM]

buzzhorton

Originally posted by buzzhorton
Is that because a function can only "see" what is passed to it?

It can only see what is passed to it or an external variable (see enclosed script for an example of the latter)
Alex

var x = 2;
function main(){
    var y = calc();
    debugPrintln(y);//returns 4
}
function calc(){
    var z = Math.pow(2,x);
    return z;
}