code: function(x, y) {
          this.rho = Math.sqrt(x * x + y * y);
          this.theta = Math.atan2(y, x);
          if(this.theta < 0) this.theta += Math.PI * 2;
      }
docs: /*
  Method: setc
  
  Sets a <Complex> number.
  
  Parameters:
  
  x - A <Complex> number real part.
  y - A <Complex> number imaginary part.