code: function(a, b) {
  
        var z = new Complex(a, b);
  
        return Math.abs(z['re'] - this['re']) <= Complex['EPSILON'] &&
                Math.abs(z['im'] - this['im']) <= Complex['EPSILON'];
      }
docs: Compares two complex numbers
  
  **Note:** new Complex(Infinity).equals(Infinity) === false
  
  @returns {boolean}