math_moraell/lib/advanced_math.js

exemple et test de création de package

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

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

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

function fibo(count) {
  call_counter();
  return private_fibo(count);
}

function private_fibo(count, counter, first, second) {
  if(count==0) return 0;
  if(counter==undefined) {
    counter=1;
    first=1;
    second=2;
  }
  result=first+second;
  if (counter==count) return result;
  private_fibo(count, ++counter, second, result);
  return result;
}
/*
function showFibo(x,y,n) {
  if (n>1) {
    return "" + (x+y) + ", " + fibo(y, (x+y), n-1)
  } else {
    return "" + (x+y);
  }
}*/

module.exports={
  multiplication:multiple,
  division:divide,
  fibonacci:fibo
}