rational_horner3_7.hpp - DriveHQ Cloud IT/Storage service

Yes No
Do you want to visit DriveHQ English website?
rational_horner3_7.hpp - Hosted on DriveHQ Cloud IT Platform
返回上层目录
上传
下载
共享
发布
新建文件夹
新建文件
复制
剪切
删除
粘贴
评论
升级服务
路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\math\tools\detail\rational_horner3_7.hpp
旋转
特效
属性
历史版本
//  (C) Copyright John Maddock 2007.
//  Use, modification and distribution are subject to the
//  Boost Software License, Version 1.0. (See accompanying file
//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
//  This file is machine generated, do not edit by hand

// Polynomial evaluation using second order Horners rule
#ifndef BOOST_MATH_TOOLS_RAT_EVAL_7_HPP
#define BOOST_MATH_TOOLS_RAT_EVAL_7_HPP

namespace boost{ namespace math{ namespace tools{ namespace detail{

template <class T, class U, class V>
inline V evaluate_rational_c_imp(const T* a, const U* b, const V&, const mpl::int_<0>*)
{
   return static_cast<V>(0);
}

template <class T, class U, class V>
inline V evaluate_rational_c_imp(const T* a, const U* b, const V&, const mpl::int_<1>*)
{
   return static_cast<V>(a[0]) / static_cast<V>(b[0]);
}

template <class T, class U, class V>
inline V evaluate_rational_c_imp(const T* a, const U* b, const V& x, const mpl::int_<2>*)
{
   return static_cast<V>((a[1] * x + a[0]) / (b[1] * x + b[0]));
}

template <class T, class U, class V>
inline V evaluate_rational_c_imp(const T* a, const U* b, const V& x, const mpl::int_<3>*)
{
   return static_cast<V>(((a[2] * x + a[1]) * x + a[0]) / ((b[2] * x + b[1]) * x + b[0]));
}

template <class T, class U, class V>
inline V evaluate_rational_c_imp(const T* a, const U* b, const V& x, const mpl::int_<4>*)
{
   return static_cast<V>((((a[3] * x + a[2]) * x + a[1]) * x + a[0]) / (((b[3] * x + b[2]) * x + b[1]) * x + b[0]));
}

template <class T, class U, class V>
inline V evaluate_rational_c_imp(const T* a, const U* b, const V& x, const mpl::int_<5>*)
{
   if(x <= 1)
   {
      V x2 = x * x;
      V t[4];
      t[0] = a[4] * x2 + a[2];
      t[1] = a[3] * x2 + a[1];
      t[2] = b[4] * x2 + b[2];
      t[3] = b[3] * x2 + b[1];
      t[0] *= x2;
      t[2] *= x2;
      t[0] += static_cast<V>(a[0]);
      t[2] += static_cast<V>(b[0]);
      t[1] *= x;
      t[3] *= x;
      return (t[0] + t[1]) / (t[2] + t[3]);
   }
   else
   {
      V z = 1 / x;
      V z2 = 1 / (x * x);
      V t[4];
      t[0] = a[0] * z2 + a[2];
      t[1] = a[1] * z2 + a[3];
      t[2] = b[0] * z2 + b[2];
      t[3] = b[1] * z2 + b[3];
      t[0] *= z2;
      t[2] *= z2;
      t[0] += static_cast<V>(a[4]);
      t[2] += static_cast<V>(b[4]);
      t[1] *= z;
      t[3] *= z;
      return (t[0] + t[1]) / (t[2] + t[3]);
   }
}

template <class T, class U, class V>
inline V evaluate_rational_c_imp(const T* a, const U* b, const V& x, const mpl::int_<6>*)
{
   if(x <= 1)
   {
      V x2 = x * x;
      V t[4];
      t[0] = a[5] * x2 + a[3];
      t[1] = a[4] * x2 + a[2];
      t[2] = b[5] * x2 + b[3];
      t[3] = b[4] * x2 + b[2];
      t[0] *= x2;
      t[1] *= x2;
      t[2] *= x2;
      t[3] *= x2;
      t[0] += static_cast<V>(a[1]);
      t[1] += static_cast<V>(a[0]);
      t[2] += static_cast<V>(b[1]);
      t[3] += static_cast<V>(b[0]);
      t[0] *= x;
      t[2] *= x;
      return (t[0] + t[1]) / (t[2] + t[3]);
   }
   else
   {
      V z = 1 / x;
      V z2 = 1 / (x * x);
      V t[4];
      t[0] = a[0] * z2 + a[2];
      t[1] = a[1] * z2 + a[3];
      t[2] = b[0] * z2 + b[2];
      t[3] = b[1] * z2 + b[3];
      t[0] *= z2;
      t[1] *= z2;
      t[2] *= z2;
      t[3] *= z2;
      t[0] += static_cast<V>(a[4]);
      t[1] += static_cast<V>(a[5]);
      t[2] += static_cast<V>(b[4]);
      t[3] += static_cast<V>(b[5]);
      t[0] *= z;
      t[2] *= z;
      return (t[0] + t[1]) / (t[2] + t[3]);
   }
}

template <class T, class U, class V>
inline V evaluate_rational_c_imp(const T* a, const U* b, const V& x, const mpl::int_<7>*)
{
   if(x <= 1)
   {
      V x2 = x * x;
      V t[4];
      t[0] = a[6] * x2 + a[4];
      t[1] = a[5] * x2 + a[3];
      t[2] = b[6] * x2 + b[4];
      t[3] = b[5] * x2 + b[3];
      t[0] *= x2;
      t[1] *= x2;
      t[2] *= x2;
      t[3] *= x2;
      t[0] += static_cast<V>(a[2]);
      t[1] += static_cast<V>(a[1]);
      t[2] += static_cast<V>(b[2]);
      t[3] += static_cast<V>(b[1]);
      t[0] *= x2;
      t[2] *= x2;
      t[0] += static_cast<V>(a[0]);
      t[2] += static_cast<V>(b[0]);
      t[1] *= x;
      t[3] *= x;
      return (t[0] + t[1]) / (t[2] + t[3]);
   }
   else
   {
      V z = 1 / x;
      V z2 = 1 / (x * x);
      V t[4];
      t[0] = a[0] * z2 + a[2];
      t[1] = a[1] * z2 + a[3];
      t[2] = b[0] * z2 + b[2];
      t[3] = b[1] * z2 + b[3];
      t[0] *= z2;
      t[1] *= z2;
      t[2] *= z2;
      t[3] *= z2;
      t[0] += static_cast<V>(a[4]);
      t[1] += static_cast<V>(a[5]);
      t[2] += static_cast<V>(b[4]);
      t[3] += static_cast<V>(b[5]);
      t[0] *= z2;
      t[2] *= z2;
      t[0] += static_cast<V>(a[6]);
      t[2] += static_cast<V>(b[6]);
      t[1] *= z;
      t[3] *= z;
      return (t[0] + t[1]) / (t[2] + t[3]);
   }
}


}}}} // namespaces

#endif // include guard
rational_horner3_7.hpp
网页地址
文件地址
Would you like to comment?
