// Copyright John Maddock 2006. | |
// 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) | |
// std_real_concept is an archetype for built-in Real types. | |
// The main purpose in providing this type is to verify | |
// that std lib functions are found via a using declaration | |
// bringing those functions into the current scope, and not | |
// just because they happen to be in global scope. | |
// | |
// If ::pow is found rather than std::pow say, then the code | |
// will silently compile, but truncation of long doubles to | |
// double will cause a significant loss of precision. | |
// A template instantiated with std_real_concept will *only* | |
// compile if it std::whatever is in scope. | |
#include <boost/config.hpp> | |
#include <boost/limits.hpp> | |
#include <boost/math/policies/policy.hpp> | |
#include <boost/math/special_functions/math_fwd.hpp> | |
#include <ostream> | |
#include <istream> | |
#include <boost/config/no_tr1/cmath.hpp> | |
#include <math.h> // fmodl | |
#ifndef BOOST_MATH_STD_REAL_CONCEPT_HPP | |
#define BOOST_MATH_STD_REAL_CONCEPT_HPP | |
namespace boost{ namespace math{ | |
namespace concepts | |
{ | |
#ifdef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS | |
typedef double std_real_concept_base_type; | |
#else | |
typedef long double std_real_concept_base_type; | |
#endif | |
class std_real_concept | |
{ | |
public: | |
// Constructors: | |
std_real_concept() : m_value(0){} | |
std_real_concept(char c) : m_value(c){} | |
#ifndef BOOST_NO_INTRINSIC_WCHAR_T | |
std_real_concept(wchar_t c) : m_value(c){} | |
#endif | |
std_real_concept(unsigned char c) : m_value(c){} | |
std_real_concept(signed char c) : m_value(c){} | |
std_real_concept(unsigned short c) : m_value(c){} | |
std_real_concept(short c) : m_value(c){} | |
std_real_concept(unsigned int c) : m_value(c){} | |
std_real_concept(int c) : m_value(c){} | |
std_real_concept(unsigned long c) : m_value(c){} | |
std_real_concept(long c) : m_value(c){} | |
#if defined(__DECCXX) || defined(__SUNPRO_CC) | |
std_real_concept(unsigned long long c) : m_value(static_cast<std_real_concept_base_type>(c)){} | |
std_real_concept(long long c) : m_value(static_cast<std_real_concept_base_type>(c)){} | |
#elif defined(BOOST_HAS_LONG_LONG) | |
std_real_concept(boost::ulong_long_type c) : m_value(static_cast<std_real_concept_base_type>(c)){} | |
std_real_concept(boost::long_long_type c) : m_value(static_cast<std_real_concept_base_type>(c)){} | |
#endif | |
std_real_concept(float c) : m_value(c){} | |
std_real_concept(double c) : m_value(c){} | |
std_real_concept(long double c) : m_value(c){} | |
// Assignment: | |
std_real_concept& operator=(char c) { m_value = c; return *this; } | |
std_real_concept& operator=(unsigned char c) { m_value = c; return *this; } | |
std_real_concept& operator=(signed char c) { m_value = c; return *this; } | |
#ifndef BOOST_NO_INTRINSIC_WCHAR_T | |
std_real_concept& operator=(wchar_t c) { m_value = c; return *this; } | |
#endif | |
std_real_concept& operator=(short c) { m_value = c; return *this; } | |
std_real_concept& operator=(unsigned short c) { m_value = c; return *this; } | |
std_real_concept& operator=(int c) { m_value = c; return *this; } | |
std_real_concept& operator=(unsigned int c) { m_value = c; return *this; } | |
std_real_concept& operator=(long c) { m_value = c; return *this; } | |
std_real_concept& operator=(unsigned long c) { m_value = c; return *this; } | |
#if defined(__DECCXX) || defined(__SUNPRO_CC) | |
std_real_concept& operator=(unsigned long long c) { m_value = static_cast<std_real_concept_base_type>(c); return *this; } | |
std_real_concept& operator=(long long c) { m_value = static_cast<std_real_concept_base_type>(c); return *this; } | |
#elif defined(BOOST_HAS_LONG_LONG) | |
std_real_concept& operator=(boost::long_long_type c) { m_value = static_cast<std_real_concept_base_type>(c); return *this; } | |
std_real_concept& operator=(boost::ulong_long_type c) { m_value = static_cast<std_real_concept_base_type>(c); return *this; } | |
#endif | |
std_real_concept& operator=(float c) { m_value = c; return *this; } | |
std_real_concept& operator=(double c) { m_value = c; return *this; } | |
std_real_concept& operator=(long double c) { m_value = c; return *this; } | |
// Access: | |
std_real_concept_base_type value()const{ return m_value; } | |
// Member arithmetic: | |
std_real_concept& operator+=(const std_real_concept& other) | |
{ m_value += other.value(); return *this; } | |
std_real_concept& operator-=(const std_real_concept& other) | |
{ m_value -= other.value(); return *this; } | |
std_real_concept& operator*=(const std_real_concept& other) | |
{ m_value *= other.value(); return *this; } | |
std_real_concept& operator/=(const std_real_concept& other) | |
{ m_value /= other.value(); return *this; } | |
std_real_concept operator-()const | |
{ return -m_value; } | |
std_real_concept const& operator+()const | |
{ return *this; } | |
private: | |
std_real_concept_base_type m_value; | |
}; | |
// Non-member arithmetic: | |
inline std_real_concept operator+(const std_real_concept& a, const std_real_concept& b) | |
{ | |
std_real_concept result(a); | |
result += b; | |
return result; | |
} | |
inline std_real_concept operator-(const std_real_concept& a, const std_real_concept& b) | |
{ | |
std_real_concept result(a); | |
result -= b; | |
return result; | |
} | |
inline std_real_concept operator*(const std_real_concept& a, const std_real_concept& b) | |
{ | |
std_real_concept result(a); | |
result *= b; | |
return result; | |
} | |
inline std_real_concept operator/(const std_real_concept& a, const std_real_concept& b) | |
{ | |
std_real_concept result(a); | |
result /= b; | |
return result; | |
} | |
// Comparison: | |
inline bool operator == (const std_real_concept& a, const std_real_concept& b) | |
{ return a.value() == b.value(); } | |
inline bool operator != (const std_real_concept& a, const std_real_concept& b) | |
{ return a.value() != b.value();} | |
inline bool operator < (const std_real_concept& a, const std_real_concept& b) | |
{ return a.value() < b.value(); } | |
inline bool operator <= (const std_real_concept& a, const std_real_concept& b) | |
{ return a.value() <= b.value(); } | |
inline bool operator > (const std_real_concept& a, const std_real_concept& b) | |
{ return a.value() > b.value(); } | |
inline bool operator >= (const std_real_concept& a, const std_real_concept& b) | |
{ return a.value() >= b.value(); } | |
} // namespace concepts | |
} // namespace math | |
} // namespace boost | |
namespace std{ | |
// Non-member functions: | |
inline boost::math::concepts::std_real_concept acos(boost::math::concepts::std_real_concept a) | |
{ return std::acos(a.value()); } | |
inline boost::math::concepts::std_real_concept cos(boost::math::concepts::std_real_concept a) | |
{ return std::cos(a.value()); } | |
inline boost::math::concepts::std_real_concept asin(boost::math::concepts::std_real_concept a) | |
{ return std::asin(a.value()); } | |
inline boost::math::concepts::std_real_concept atan(boost::math::concepts::std_real_concept a) | |
{ return std::atan(a.value()); } | |
inline boost::math::concepts::std_real_concept atan2(boost::math::concepts::std_real_concept a, boost::math::concepts::std_real_concept b) | |
{ return std::atan2(a.value(), b.value()); } | |
inline boost::math::concepts::std_real_concept ceil(boost::math::concepts::std_real_concept a) | |
{ return std::ceil(a.value()); } | |
#ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS | |
inline boost::math::concepts::std_real_concept fmod(boost::math::concepts::std_real_concept a, boost::math::concepts::std_real_concept b) | |
{ return fmodl(a.value(), b.value()); } | |
#else | |
inline boost::math::concepts::std_real_concept fmod(boost::math::concepts::std_real_concept a, boost::math::concepts::std_real_concept b) | |
{ return std::fmod(a.value(), b.value()); } | |
#endif | |
inline boost::math::concepts::std_real_concept cosh(boost::math::concepts::std_real_concept a) | |
{ return std::cosh(a.value()); } | |
inline boost::math::concepts::std_real_concept exp(boost::math::concepts::std_real_concept a) | |
{ return std::exp(a.value()); } | |
inline boost::math::concepts::std_real_concept fabs(boost::math::concepts::std_real_concept a) | |
{ return std::fabs(a.value()); } | |
inline boost::math::concepts::std_real_concept abs(boost::math::concepts::std_real_concept a) | |
{ return std::abs(a.value()); } | |
inline boost::math::concepts::std_real_concept floor(boost::math::concepts::std_real_concept a) | |
{ return std::floor(a.value()); } | |
inline boost::math::concepts::std_real_concept modf(boost::math::concepts::std_real_concept a, boost::math::concepts::std_real_concept* ipart) | |
{ | |
boost::math::concepts::std_real_concept_base_type ip; | |
boost::math::concepts::std_real_concept_base_type result = std::modf(a.value(), &ip); | |
*ipart = ip; | |
return result; | |
} | |
inline boost::math::concepts::std_real_concept frexp(boost::math::concepts::std_real_concept a, int* expon) | |
{ return std::frexp(a.value(), expon); } | |
inline boost::math::concepts::std_real_concept ldexp(boost::math::concepts::std_real_concept a, int expon) | |
{ return std::ldexp(a.value(), expon); } | |
inline boost::math::concepts::std_real_concept log(boost::math::concepts::std_real_concept a) | |
{ return std::log(a.value()); } | |
inline boost::math::concepts::std_real_concept log10(boost::math::concepts::std_real_concept a) | |
{ return std::log10(a.value()); } | |
inline boost::math::concepts::std_real_concept tan(boost::math::concepts::std_real_concept a) | |
{ return std::tan(a.value()); } | |
inline boost::math::concepts::std_real_concept pow(boost::math::concepts::std_real_concept a, boost::math::concepts::std_real_concept b) | |
{ return std::pow(a.value(), b.value()); } | |
#if !defined(__SUNPRO_CC) | |
inline boost::math::concepts::std_real_concept pow(boost::math::concepts::std_real_concept a, int b) | |
{ return std::pow(a.value(), b); } | |
#else | |
inline boost::math::concepts::std_real_concept pow(boost::math::concepts::std_real_concept a, int b) | |
{ return std::pow(a.value(), static_cast<long double>(b)); } | |
#endif | |
inline boost::math::concepts::std_real_concept sin(boost::math::concepts::std_real_concept a) | |
{ return std::sin(a.value()); } | |
inline boost::math::concepts::std_real_concept sinh(boost::math::concepts::std_real_concept a) | |
{ return std::sinh(a.value()); } | |
inline boost::math::concepts::std_real_concept sqrt(boost::math::concepts::std_real_concept a) | |
{ return std::sqrt(a.value()); } | |
inline boost::math::concepts::std_real_concept tanh(boost::math::concepts::std_real_concept a) | |
{ return std::tanh(a.value()); } | |
} // namespace std | |
#include <boost/math/special_functions/round.hpp> | |
#include <boost/math/special_functions/trunc.hpp> | |
#include <boost/math/special_functions/modf.hpp> | |
#include <boost/math/tools/precision.hpp> | |
namespace boost{ namespace math{ namespace concepts{ | |
// | |
// Conversion and truncation routines: | |
// | |
template <class Policy> | |
inline int iround(const concepts::std_real_concept& v, const Policy& pol) | |
{ | |
return boost::math::iround(v.value(), pol); | |
} | |
inline int iround(const concepts::std_real_concept& v) | |
{ | |
return boost::math::iround(v.value(), policies::policy<>()); | |
} | |
template <class Policy> | |
inline long lround(const concepts::std_real_concept& v, const Policy& pol) | |
{ | |
return boost::math::lround(v.value(), pol); | |
} | |
inline long lround(const concepts::std_real_concept& v) | |
{ | |
return boost::math::lround(v.value(), policies::policy<>()); | |
} | |
#ifdef BOOST_HAS_LONG_LONG | |
template <class Policy> | |
inline boost::long_long_type llround(const concepts::std_real_concept& v, const Policy& pol) | |
{ | |
return boost::math::llround(v.value(), pol); | |
} | |
inline boost::long_long_type llround(const concepts::std_real_concept& v) | |
{ | |
return boost::math::llround(v.value(), policies::policy<>()); | |
} | |
#endif | |
template <class Policy> | |
inline int itrunc(const concepts::std_real_concept& v, const Policy& pol) | |
{ | |
return boost::math::itrunc(v.value(), pol); | |
} | |
inline int itrunc(const concepts::std_real_concept& v) | |
{ | |
return boost::math::itrunc(v.value(), policies::policy<>()); | |
} | |
template <class Policy> | |
inline long ltrunc(const concepts::std_real_concept& v, const Policy& pol) | |
{ | |
return boost::math::ltrunc(v.value(), pol); | |
} | |
inline long ltrunc(const concepts::std_real_concept& v) | |
{ | |
return boost::math::ltrunc(v.value(), policies::policy<>()); | |
} | |
#ifdef BOOST_HAS_LONG_LONG | |
template <class Policy> | |
inline boost::long_long_type lltrunc(const concepts::std_real_concept& v, const Policy& pol) | |
{ | |
return boost::math::lltrunc(v.value(), pol); | |
} | |
inline boost::long_long_type lltrunc(const concepts::std_real_concept& v) | |
{ | |
return boost::math::lltrunc(v.value(), policies::policy<>()); | |
} | |
#endif | |
// Streaming: | |
template <class charT, class traits> | |
inline std::basic_ostream<charT, traits>& operator<<(std::basic_ostream<charT, traits>& os, const std_real_concept& a) | |
{ | |
return os << a.value(); | |
} | |
template <class charT, class traits> | |
inline std::basic_istream<charT, traits>& operator>>(std::basic_istream<charT, traits>& is, std_real_concept& a) | |
{ | |
std_real_concept_base_type v; | |
is >> v; | |
a = v; | |
return is; | |
} | |
} // namespace concepts | |
}} | |
#include <boost/math/tools/precision.hpp> | |
namespace boost{ namespace math{ | |
namespace tools | |
{ | |
template <> | |
inline concepts::std_real_concept max_value<concepts::std_real_concept>(BOOST_MATH_EXPLICIT_TEMPLATE_TYPE_SPEC(concepts::std_real_concept)) | |
{ | |
return max_value<concepts::std_real_concept_base_type>(); | |
} | |
template <> | |
inline concepts::std_real_concept min_value<concepts::std_real_concept>(BOOST_MATH_EXPLICIT_TEMPLATE_TYPE_SPEC(concepts::std_real_concept)) | |
{ | |
return min_value<concepts::std_real_concept_base_type>(); | |
} | |
template <> | |
inline concepts::std_real_concept log_max_value<concepts::std_real_concept>(BOOST_MATH_EXPLICIT_TEMPLATE_TYPE_SPEC(concepts::std_real_concept)) | |
{ | |
return log_max_value<concepts::std_real_concept_base_type>(); | |
} | |
template <> | |
inline concepts::std_real_concept log_min_value<concepts::std_real_concept>(BOOST_MATH_EXPLICIT_TEMPLATE_TYPE_SPEC(concepts::std_real_concept)) | |
{ | |
return log_min_value<concepts::std_real_concept_base_type>(); | |
} | |
template <> | |
inline concepts::std_real_concept epsilon(BOOST_MATH_EXPLICIT_TEMPLATE_TYPE_SPEC(concepts::std_real_concept)) | |
{ | |
return tools::epsilon<concepts::std_real_concept_base_type>(); | |
} | |
template <> | |
inline int digits<concepts::std_real_concept>(BOOST_MATH_EXPLICIT_TEMPLATE_TYPE_SPEC(concepts::std_real_concept)) | |
{ // Assume number of significand bits is same as std_real_concept_base_type, | |
// unless std::numeric_limits<T>::is_specialized to provide digits. | |
return digits<concepts::std_real_concept_base_type>(); | |
} | |
} // namespace tools | |
#if BOOST_WORKAROUND(BOOST_MSVC, <= 1310) | |
using concepts::itrunc; | |
using concepts::ltrunc; | |
using concepts::lltrunc; | |
using concepts::iround; | |
using concepts::lround; | |
using concepts::llround; | |
#endif | |
} // namespace math | |
} // namespace boost | |
#endif // BOOST_MATH_STD_REAL_CONCEPT_HPP | |