math_example_mh/lib/advanced_math.js

Un example 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();
  if (y!=0)
    return x/y;
  else
    return 0;
}

// My fibo function
function fibonacci (n){
  /*var result_tab[];
  result_tab[0]=0;
  result_tab[1]=1;*/

  if(n < 0)
    return 0;
  else {
    var count1 = 0;
    var result = 1;
    var temp = 0;
    for (i = 1; i < n; i++){
      temp = count1;
      count1 = result;
      result = result + temp;
      //result_tab[i] = result;
    }
    return result;
    //return result_tab;
  }
}

// Prof fibo functions
function fibo(count){
  call_counter();
  return private_fibo();
}
function private_fibo(count, counter, first, second){
  if(count == 0) return 0;
  if (count == undefined){
    counter = 1;
    first = 1;
    second = 2;
  }
  result = first+second;
  if (counter == count) return result;
  private_fibo(count, ++counter, second, result);
  return result;
}


// export des fonctions
module.exports = {
  multiplier : multiple,
  diviser : divide,
  fibonacci,
  fibo
}