/**
 * The Date.prototype object's 'toString' routine
 *
 * See also:
 *          ECMA-262 v5, 15.9.5.2
 *
 * @return ecma value
 *         Returned value must be freed with ecma_free_value.
 */
static ecma_value_t
ecma_builtin_date_prototype_to_string (ecma_value_t this_arg) /**< this argument */
{
  ecma_value_t ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);

  ECMA_TRY_CATCH (prim_value,
                  ecma_date_get_primitive_value (this_arg),
                  ret_value);

  ecma_number_t *prim_num_p = ecma_get_number_from_value (prim_value);

  if (ecma_number_is_nan (*prim_num_p))
  {
    ecma_string_t *magic_str_p = ecma_get_magic_string (LIT_MAGIC_STRING_INVALID_DATE_UL);
    ret_value = ecma_make_string_value (magic_str_p);
  }
  else
  {
    ret_value = ecma_date_value_to_string (*prim_num_p);
  }

  ECMA_FINALIZE (prim_value);

  return ret_value;
} /* ecma_builtin_date_prototype_to_string */
/**
 * The Date.prototype object's 'toISOString' routine
 *
 * See also:
 *          ECMA-262 v5, 15.9.5.43
 *
 * @return ecma value
 *         Returned value must be freed with ecma_free_value.
 */
static ecma_value_t
ecma_builtin_date_prototype_to_iso_string (ecma_value_t this_arg) /**< this argument */
{
  ecma_value_t ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);

  ECMA_TRY_CATCH (prim_value,
                  ecma_date_get_primitive_value (this_arg),
                  ret_value);

  ecma_number_t *prim_num_p = ecma_get_number_from_value (prim_value);

  if (ecma_number_is_nan (*prim_num_p) || ecma_number_is_infinity (*prim_num_p))
  {
    ret_value = ecma_raise_range_error (ECMA_ERR_MSG (""));
  }
  else
  {
    ret_value = ecma_date_value_to_iso_string (*prim_num_p);
  }

  ECMA_FINALIZE (prim_value);

  return ret_value;
} /* ecma_builtin_date_prototype_to_iso_string */
/**
 * The Date.prototype object's 'toISOString' routine
 *
 * See also:
 *          ECMA-262 v5, 15.9.5.43
 *
 * @return completion value
 *         Returned value must be freed with ecma_free_completion_value.
 */
static ecma_completion_value_t
ecma_builtin_date_prototype_to_iso_string (ecma_value_t this_arg) /**< this argument */
{
  ecma_completion_value_t ret_value = ecma_make_empty_completion_value ();

  ECMA_TRY_CATCH (prim_value,
                  ecma_date_get_primitive_value (this_arg),
                  ret_value);

  ecma_number_t *prim_num_p = ecma_get_number_from_value (prim_value);

  if (ecma_number_is_nan (*prim_num_p) || ecma_number_is_infinity (*prim_num_p))
  {
    ret_value = ecma_make_throw_obj_completion_value (ecma_new_standard_error (ECMA_ERROR_RANGE));
  }
  else
  {
    ret_value = ecma_date_value_to_iso_string (*prim_num_p);
  }

  ECMA_FINALIZE (prim_value);

  return ret_value;
} /* ecma_builtin_date_prototype_to_iso_string */