C++ (Cpp) rounding::add_down示例

template<class I> inline
I add(const typename I::base_type& x, const typename I::base_type& y)
{
  typedef typename I::traits_type Policies;
  if (detail::test_input<typename I::base_type, Policies>(x, y))
    return I::empty();
  typename Policies::rounding rnd;
  return I(rnd.add_down(x, y), rnd.add_up(x, y), true);
}

示例#2

显示文件

template<class T, class Policies> inline
interval<T, Policies> operator+(const T& x, const interval<T, Policies>& y)
{
  if (interval_lib::detail::test_input(x, y))
    return interval<T, Policies>::empty();
  typename Policies::rounding rnd;
  return interval<T,Policies>(rnd.add_down(x, y.lower()),
                              rnd.add_up  (x, y.upper()), true);
}

示例#3

显示文件

template<class T, class Policies> inline
interval<T, Policies>& interval<T, Policies>::operator+=(const T& r)
{
  if (interval_lib::detail::test_input(*this, r))
    set_empty();
  else {
    typename Policies::rounding rnd;
    set(rnd.add_down(low, r), rnd.add_up(up, r));
  }
  return *this;
}