math_demo/lib/advanced_math.js

An demo of createing a package

var call_counter=require('./call_counter');

function mutiply(x,y)
{
	call_counter();
	return x * y;
}

function divide(x,y)
{
	call_counter();
	return x / y;
}

function fib(count)
{
	call_counter();
	return private_fib(count);
}

function private_fib(count, counter, first, second)
{
	if(count==0) 
		return 0;
		
	if(counter==undefined)
	{
		counter=1;
		first=1;
		second=2;
	}
	
	result=first+second;
	private_fib(count, ++counter, second,result);
	return result;
}

module.exports={
	mutiplication:mutiply,
	division:divide,
	fibonacci:fib
}