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C++ typenamepolicies::rounding类代码示例

本文整理汇总了C++中typenamepolicies::rounding的典型用法代码示例。如果您正苦于以下问题:C++ rounding类的具体用法?C++ rounding怎么用?C++ rounding使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。


在下文中一共展示了rounding类的12个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: width

template<class T, class Policies> inline
T width(const interval<T, Policies>& x)
{
  if (interval_lib::detail::test_input(x)) return static_cast<T>(0);
  typename Policies::rounding rnd;
  return rnd.sub_up(x.upper(), x.lower());
}
开发者ID:AlexRa,项目名称:Kirstens-clone,代码行数:7,代码来源:utility.hpp

示例2: I

template<class T, class Policies> inline
interval<T, Policies> div_zero_part1(const interval<T, Policies>& x,
                                     const interval<T, Policies>& y, bool& b)
{
    // assert(y.lower() < 0 && y.upper() > 0);
    if (is_zero(x.lower()) && is_zero(x.upper()))
    {
        b = false;
        return x;
    }
    typename Policies::rounding rnd;
    typedef interval<T, Policies> I;
    const T& xl = x.lower();
    const T& xu = x.upper();
    const T& yl = y.lower();
    const T& yu = y.upper();
    typedef typename I::checking checking;
    const T& inf = checking::inf();
    if (is_neg(xu))
    {
        b = true;
        return I(-inf, rnd.div_up(xu, yu), true);
    }
    else if (is_neg(xl))
    {
        b = false;
        return I(-inf, inf, true);
    }
    else
    {
        b = true;
        return I(-inf, rnd.div_up(xl, yl), true);
    }
}
开发者ID:Frankie-666,项目名称:xray-16,代码行数:34,代码来源:division.hpp

示例3: I

template<class T, class Policies> inline
interval<T, Policies> cos(const interval<T, Policies>& x)
{
  if (interval_lib::detail::test_input(x))
    return interval<T, Policies>::empty();
  typename Policies::rounding rnd;
  typedef interval<T, Policies> I;
  typedef typename interval_lib::unprotect<I>::type R;

  // get lower bound within [0, pi]
  const R pi2 = interval_lib::pi_twice<R>();
  R tmp = fmod((const R&)x, pi2);
  if (width(tmp) >= pi2.lower())
    return I(static_cast<T>(-1), static_cast<T>(1), true); // we are covering a full period
  if (tmp.lower() >= interval_lib::constants::pi_upper<T>())
    return -cos(tmp - interval_lib::pi<R>());
  T l = tmp.lower();
  T u = tmp.upper();

  BOOST_USING_STD_MIN();
  // separate into monotone subintervals
  if (u <= interval_lib::constants::pi_lower<T>())
    return I(rnd.cos_down(u), rnd.cos_up(l), true);
  else if (u <= pi2.lower())
    return I(static_cast<T>(-1), rnd.cos_up(min BOOST_PREVENT_MACRO_SUBSTITUTION(rnd.sub_down(pi2.lower(), u), l)), true);
  else
    return I(static_cast<T>(-1), static_cast<T>(1), true);
}
开发者ID:4eek,项目名称:xtractorfan,代码行数:28,代码来源:transc.hpp

示例4: widen

template<class T, class Policies> inline
interval<T, Policies> widen(const interval<T, Policies>& x, const T& v)
{
  if (interval_lib::detail::test_input(x))
    return interval<T, Policies>::empty();
  typename Policies::rounding rnd;
  return interval<T, Policies>(rnd.sub_down(x.lower(), v),
                               rnd.add_up  (x.upper(), v), true);
}
开发者ID:AlexRa,项目名称:Kirstens-clone,代码行数:9,代码来源:utility.hpp

示例5: empty

template<class T, class Policies> inline
interval<T, Policies> exp(const interval<T, Policies>& x)
{
  typedef interval<T, Policies> I;
  if (interval_lib::detail::test_input(x))
    return I::empty();
  typename Policies::rounding rnd;
  return I(rnd.exp_down(x.lower()), rnd.exp_up(x.upper()), true);
}
开发者ID:4eek,项目名称:xtractorfan,代码行数:9,代码来源:transc.hpp

示例6: div

template<class I> inline
I div(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) || user::is_zero(y))
    return I::empty();
  typename Policies::rounding rnd;
  return I(rnd.div_down(x, y), rnd.div_up(x, y), true);
}
开发者ID:ngzHappy,项目名称:cpc2,代码行数:9,代码来源:arith3.hpp

示例7: fmod

template<class T, class Policies> inline
interval<T, Policies> fmod(const interval<T, Policies>& x, const T& y)
{
  if (interval_lib::detail::test_input(x, y))
    return interval<T, Policies>::empty();
  typename Policies::rounding rnd;
  typedef typename interval_lib::unprotect<interval<T, Policies> >::type I;
  T n = rnd.int_down(rnd.div_down(x.lower(), y));
  return (const I&)x - n * I(y);
}
开发者ID:hackshields,项目名称:antivirus,代码行数:10,代码来源:arith2.hpp

示例8: median

template<class T, class Policies> inline
T median(const interval<T, Policies>& x)
{
  if (interval_lib::detail::test_input(x)) {
    typedef typename Policies::checking checking;
    return checking::nan();
  }
  typename Policies::rounding rnd;
  return rnd.median(x.lower(), x.upper());
}
开发者ID:AlexRa,项目名称:Kirstens-clone,代码行数:10,代码来源:utility.hpp

示例9: I

template<class T, class Policies> inline
interval<T, Policies> div_non_zero(const T& x, const interval<T, Policies>& y)
{
  // assert(!in_zero(y));
  typename Policies::rounding rnd;
  typedef interval<T, Policies> I;
  const T& yl = y.lower();
  const T& yu = y.upper();
  if (::boost::numeric::interval_lib::user::is_neg(x))
    return I(rnd.div_down(x, yl), rnd.div_up(x, yu), true);
  else
    return I(rnd.div_down(x, yu), rnd.div_up(x, yl), true);
}
开发者ID:ARK1988,项目名称:nupic.core,代码行数:13,代码来源:division.hpp

示例10: if

template<class T, class Policies> inline
interval<T, Policies> div_zero_part1(const interval<T, Policies>& x,
                                     const interval<T, Policies>& y, bool& b)
{
  // assert(::boost::numeric::interval_lib::user::is_neg(y.lower()) && ::boost::numeric::interval_lib::user::is_pos(y.upper()));
  if (::boost::numeric::interval_lib::user::is_zero(x.lower()) && ::boost::numeric::interval_lib::user::is_zero(x.upper()))
    { b = false; return x; }
  typename Policies::rounding rnd;
  typedef interval<T, Policies> I;
  const T& xl = x.lower();
  const T& xu = x.upper();
  const T& yl = y.lower();
  const T& yu = y.upper();
  typedef typename Policies::checking checking;
  if (::boost::numeric::interval_lib::user::is_neg(xu))
    { b = true;  return I(checking::neg_inf(), rnd.div_up(xu, yu), true); }
  else if (::boost::numeric::interval_lib::user::is_neg(xl))
    { b = false; return I(checking::neg_inf(), checking::pos_inf(), true); }
  else
    { b = true;  return I(checking::neg_inf(), rnd.div_up(xl, yl), true); }
}
开发者ID:ARK1988,项目名称:nupic.core,代码行数:21,代码来源:division.hpp

示例11: empty

template<class T, class Policies> inline
interval<T, Policies> multiplicative_inverse(const interval<T, Policies>& x)
{
  typedef interval<T, Policies> I;
  if (detail::test_input(x))
    return I::empty();
  T one = static_cast<T>(1);
  typename Policies::rounding rnd;
  if (in_zero(x)) {
    typedef typename Policies::checking checking;
    if (!detail::is_zero(x.lower()))
      if (!detail::is_zero(x.upper()))
        return I::whole();
      else
        return I(-checking::inf(), rnd.div_up(one, x.lower()), true);
    else
      if (!detail::is_zero(x.upper()))
        return I(rnd.div_down(one, x.upper()), checking::inf(), true);
      else
        return I::empty();
  } else 
    return I(rnd.div_down(one, x.upper()), rnd.div_up(one, x.lower()), true);
}
开发者ID:hackshields,项目名称:antivirus,代码行数:23,代码来源:arith2.hpp

示例12: empty

template<class T, class Policies> inline
interval<T, Policies> operator*(const interval<T, Policies>& x,
                                const interval<T, Policies>& y)
{
  BOOST_NUMERIC_INTERVAL_using_max(min);
  BOOST_NUMERIC_INTERVAL_using_max(max);
  typedef interval<T, Policies> I;
  if (interval_lib::detail::test_input(x, y))
    return I::empty();
  typename Policies::rounding rnd;
  const T& xl = x.lower();
  const T& xu = x.upper();
  const T& yl = y.lower();
  const T& yu = y.upper();

  if (interval_lib::detail::is_neg(xl))
    if (interval_lib::detail::is_pos(xu))
      if (interval_lib::detail::is_neg(yl))
        if (interval_lib::detail::is_pos(yu)) // M * M
          return I(min(rnd.mul_down(xl, yu), rnd.mul_down(xu, yl)),
                   max(rnd.mul_up  (xl, yl), rnd.mul_up  (xu, yu)), true);
        else                    // M * N
          return I(rnd.mul_down(xu, yl), rnd.mul_up(xl, yl), true);
      else
        if (interval_lib::detail::is_pos(yu)) // M * P
          return I(rnd.mul_down(xl, yu), rnd.mul_up(xu, yu), true);
        else                    // M * Z
          return I(0, 0, true);
    else
      if (interval_lib::detail::is_neg(yl))
        if (interval_lib::detail::is_pos(yu)) // N * M
          return I(rnd.mul_down(xl, yu), rnd.mul_up(xl, yl), true);
        else                    // N * N
          return I(rnd.mul_down(xu, yu), rnd.mul_up(xl, yl), true);
      else
        if (interval_lib::detail::is_pos(yu)) // N * P
          return I(rnd.mul_down(xl, yu), rnd.mul_up(xu, yl), true);
        else                    // N * Z
          return I(0, 0, true);
  else
    if (interval_lib::detail::is_pos(xu))
      if (interval_lib::detail::is_neg(yl))
        if (interval_lib::detail::is_pos(yu)) // P * M
          return I(rnd.mul_down(xu, yl), rnd.mul_up(xu, yu), true);
        else                    // P * N
          return I(rnd.mul_down(xu, yl), rnd.mul_up(xl, yu), true);
      else
        if (interval_lib::detail::is_pos(yu)) // P * P
          return I(rnd.mul_down(xl, yl), rnd.mul_up(xu, yu), true);
        else                    // P * Z
          return I(0, 0, true);
    else                        // Z * ?
      return I(0, 0, true);
}
开发者ID:NeoAnomaly,项目名称:xray,代码行数:54,代码来源:arith.hpp


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