+// 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)

+

+#ifndef BOOST_MATH_POLICY_HPP

+#define BOOST_MATH_POLICY_HPP

+

+#include <boost/mpl/list.hpp>

+#include <boost/mpl/contains.hpp>

+#include <boost/mpl/if.hpp>

+#include <boost/mpl/find_if.hpp>

+#include <boost/mpl/remove_if.hpp>

+#include <boost/mpl/vector.hpp>

+#include <boost/mpl/push_back.hpp>

+#include <boost/mpl/at.hpp>

+#include <boost/mpl/size.hpp>

+#include <boost/mpl/comparison.hpp>

+#include <boost/type_traits/is_same.hpp>

+#include <boost/static_assert.hpp>

+#include <boost/assert.hpp>

+#include <boost/math/tools/config.hpp>

+#include <limits>

+// Sadly we do need the .h versions of these to be sure of getting

+// FLT_MANT_DIG etc.

+#include <limits.h>

+#include <stdlib.h>

+#include <stddef.h>

+#include <math.h>

+

+namespace boost{ namespace math{

+

+namespace tools{

+

+template <class T>

+int digits(BOOST_MATH_EXPLICIT_TEMPLATE_TYPE(T));

+template <class T>

+T epsilon(BOOST_MATH_EXPLICIT_TEMPLATE_TYPE(T));

+

+}

+

+namespace policies{

+

+//

+// Define macros for our default policies, if they're not defined already:

+//

+#ifndef BOOST_MATH_DOMAIN_ERROR_POLICY

+#define BOOST_MATH_DOMAIN_ERROR_POLICY throw_on_error

+#endif

+#ifndef BOOST_MATH_POLE_ERROR_POLICY

+#define BOOST_MATH_POLE_ERROR_POLICY throw_on_error

+#endif

+#ifndef BOOST_MATH_OVERFLOW_ERROR_POLICY

+#define BOOST_MATH_OVERFLOW_ERROR_POLICY throw_on_error

+#endif

+#ifndef BOOST_MATH_EVALUATION_ERROR_POLICY

+#define BOOST_MATH_EVALUATION_ERROR_POLICY throw_on_error

+#endif

+#ifndef BOOST_MATH_ROUNDING_ERROR_POLICY

+#define BOOST_MATH_ROUNDING_ERROR_POLICY throw_on_error

+#endif

+#ifndef BOOST_MATH_UNDERFLOW_ERROR_POLICY

+#define BOOST_MATH_UNDERFLOW_ERROR_POLICY ignore_error

+#endif

+#ifndef BOOST_MATH_DENORM_ERROR_POLICY

+#define BOOST_MATH_DENORM_ERROR_POLICY ignore_error

+#endif

+#ifndef BOOST_MATH_INDETERMINATE_RESULT_ERROR_POLICY

+#define BOOST_MATH_INDETERMINATE_RESULT_ERROR_POLICY ignore_error

+#endif

+#ifndef BOOST_MATH_DIGITS10_POLICY

+#define BOOST_MATH_DIGITS10_POLICY 0

+#endif

+#ifndef BOOST_MATH_PROMOTE_FLOAT_POLICY

+#define BOOST_MATH_PROMOTE_FLOAT_POLICY true

+#endif

+#ifndef BOOST_MATH_PROMOTE_DOUBLE_POLICY

+#ifdef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS

+#define BOOST_MATH_PROMOTE_DOUBLE_POLICY false

+#else

+#define BOOST_MATH_PROMOTE_DOUBLE_POLICY true

+#endif

+#endif

+#ifndef BOOST_MATH_DISCRETE_QUANTILE_POLICY

+#define BOOST_MATH_DISCRETE_QUANTILE_POLICY integer_round_outwards

+#endif

+#ifndef BOOST_MATH_ASSERT_UNDEFINED_POLICY

+#define BOOST_MATH_ASSERT_UNDEFINED_POLICY true

+#endif

+#ifndef BOOST_MATH_MAX_SERIES_ITERATION_POLICY

+#define BOOST_MATH_MAX_SERIES_ITERATION_POLICY 1000000

+#endif

+#ifndef BOOST_MATH_MAX_ROOT_ITERATION_POLICY

+#define BOOST_MATH_MAX_ROOT_ITERATION_POLICY 200

+#endif

+

+#if !defined(__BORLANDC__) \

+ && !(defined(__GNUC__) && (__GNUC__ == 3) && (__GNUC_MINOR__ <= 2))

+#define BOOST_MATH_META_INT(type, name, Default)\

+ template <type N = Default> struct name : public boost::mpl::int_<N>{};\

+ namespace detail{\

+ template <type N>\

+ char test_is_valid_arg(const name<N>*);\

+ char test_is_default_arg(const name<Default>*);\

+ template <class T> struct is_##name##_imp\

+ {\

+ template <type N> static char test(const name<N>*);\

+ static double test(...);\

+ BOOST_STATIC_CONSTANT(bool, value = sizeof(test(static_cast<T*>(0))) == 1);\

+ };\

+ }\

+ template <class T> struct is_##name : public boost::mpl::bool_< ::boost::math::policies::detail::is_##name##_imp<T>::value>{};

+

+#define BOOST_MATH_META_BOOL(name, Default)\

+ template <bool N = Default> struct name : public boost::mpl::bool_<N>{};\

+ namespace detail{\

+ template <bool N>\

+ char test_is_valid_arg(const name<N>*);\

+ char test_is_default_arg(const name<Default>*);\

+ template <class T> struct is_##name##_imp\

+ {\

+ template <bool N> static char test(const name<N>*);\

+ static double test(...);\

+ BOOST_STATIC_CONSTANT(bool, value = sizeof(test(static_cast<T*>(0))) == 1);\

+ };\

+ }\

+ template <class T> struct is_##name : public boost::mpl::bool_< ::boost::math::policies::detail::is_##name##_imp<T>::value>{};

+#else

+#define BOOST_MATH_META_INT(Type, name, Default)\

+ template <Type N = Default> struct name : public boost::mpl::int_<N>{};\

+ namespace detail{\

+ template <Type N>\

+ char test_is_valid_arg(const name<N>*);\

+ char test_is_default_arg(const name<Default>*);\

+ template <class T> struct is_##name##_tester\

+ {\

+ template <Type N> static char test(const name<N>&);\

+ static double test(...);\

+ };\

+ template <class T> struct is_##name##_imp\

+ {\

+ static T inst;\

+ BOOST_STATIC_CONSTANT(bool, value = sizeof( ::boost::math::policies::detail::is_##name##_tester<T>::test(inst)) == 1);\

+ };\

+ }\

+ template <class T> struct is_##name : public boost::mpl::bool_< ::boost::math::policies::detail::is_##name##_imp<T>::value>\

+ {\

+ template <class U> struct apply{ typedef is_##name<U> type; };\

+ };

+

+#define BOOST_MATH_META_BOOL(name, Default)\

+ template <bool N = Default> struct name : public boost::mpl::bool_<N>{};\

+ namespace detail{\

+ template <bool N>\

+ char test_is_valid_arg(const name<N>*);\

+ char test_is_default_arg(const name<Default>*);\

+ template <class T> struct is_##name##_tester\

+ {\

+ template <bool N> static char test(const name<N>&);\

+ static double test(...);\

+ };\

+ template <class T> struct is_##name##_imp\

+ {\

+ static T inst;\

+ BOOST_STATIC_CONSTANT(bool, value = sizeof( ::boost::math::policies::detail::is_##name##_tester<T>::test(inst)) == 1);\

+ };\

+ }\

+ template <class T> struct is_##name : public boost::mpl::bool_< ::boost::math::policies::detail::is_##name##_imp<T>::value>\

+ {\

+ template <class U> struct apply{ typedef is_##name<U> type; };\

+ };

+#endif

+//

+// Begin by defining policy types for error handling:

+//

+enum error_policy_type

+{

+ throw_on_error = 0,

+ errno_on_error = 1,

+ ignore_error = 2,

+ user_error = 3

+};

+

+BOOST_MATH_META_INT(error_policy_type, domain_error, BOOST_MATH_DOMAIN_ERROR_POLICY)

+BOOST_MATH_META_INT(error_policy_type, pole_error, BOOST_MATH_POLE_ERROR_POLICY)

+BOOST_MATH_META_INT(error_policy_type, overflow_error, BOOST_MATH_OVERFLOW_ERROR_POLICY)

+BOOST_MATH_META_INT(error_policy_type, underflow_error, BOOST_MATH_UNDERFLOW_ERROR_POLICY)

+BOOST_MATH_META_INT(error_policy_type, denorm_error, BOOST_MATH_DENORM_ERROR_POLICY)

+BOOST_MATH_META_INT(error_policy_type, evaluation_error, BOOST_MATH_EVALUATION_ERROR_POLICY)

+BOOST_MATH_META_INT(error_policy_type, rounding_error, BOOST_MATH_ROUNDING_ERROR_POLICY)

+BOOST_MATH_META_INT(error_policy_type, indeterminate_result_error, BOOST_MATH_INDETERMINATE_RESULT_ERROR_POLICY)

+

+//

+// Policy types for internal promotion:

+//

+BOOST_MATH_META_BOOL(promote_float, BOOST_MATH_PROMOTE_FLOAT_POLICY)

+BOOST_MATH_META_BOOL(promote_double, BOOST_MATH_PROMOTE_DOUBLE_POLICY)

+BOOST_MATH_META_BOOL(assert_undefined, BOOST_MATH_ASSERT_UNDEFINED_POLICY)

+//

+// Policy types for discrete quantiles:

+//

+enum discrete_quantile_policy_type

+{

+ real,

+ integer_round_outwards,

+ integer_round_inwards,

+ integer_round_down,

+ integer_round_up,

+ integer_round_nearest

+};

+

+BOOST_MATH_META_INT(discrete_quantile_policy_type, discrete_quantile, BOOST_MATH_DISCRETE_QUANTILE_POLICY)

+//

+// Precision:

+//

+BOOST_MATH_META_INT(int, digits10, BOOST_MATH_DIGITS10_POLICY)

+BOOST_MATH_META_INT(int, digits2, 0)

+//

+// Iterations:

+//

+BOOST_MATH_META_INT(unsigned long, max_series_iterations, BOOST_MATH_MAX_SERIES_ITERATION_POLICY)

+BOOST_MATH_META_INT(unsigned long, max_root_iterations, BOOST_MATH_MAX_ROOT_ITERATION_POLICY)

+//

+// Define the names for each possible policy:

+//

+#define BOOST_MATH_PARAMETER(name)\

+ BOOST_PARAMETER_TEMPLATE_KEYWORD(name##_name)\

+ BOOST_PARAMETER_NAME(name##_name)

+

+struct default_policy{};

+

+namespace detail{

+//

+// Trait to work out bits precision from digits10 and digits2:

+//

+template <class Digits10, class Digits2>

+struct precision

+{

+ //

+ // Now work out the precision:

+ //

+ typedef typename mpl::if_c<

+ (Digits10::value == 0),

+ digits2<0>,

+ digits2<((Digits10::value + 1) * 1000L) / 301L>

+ >::type digits2_type;

+public:

+#ifdef __BORLANDC__

+ typedef typename mpl::if_c<

+ (Digits2::value > ::boost::math::policies::detail::precision<Digits10,Digits2>::digits2_type::value),

+ Digits2, digits2_type>::type type;

+#else

+ typedef typename mpl::if_c<

+ (Digits2::value > digits2_type::value),

+ Digits2, digits2_type>::type type;

+#endif

+};

+

+template <class A, class B, bool b>

+struct select_result

+{

+ typedef A type;

+};

+template <class A, class B>

+struct select_result<A, B, false>

+{

+ typedef typename mpl::deref<B>::type type;

+};

+

+template <class Seq, class Pred, class DefaultType>

+struct find_arg

+{

+private:

+ typedef typename mpl::find_if<Seq, Pred>::type iter;

+ typedef typename mpl::end<Seq>::type end_type;

+public:

+ typedef typename select_result<

+ DefaultType, iter,

+ ::boost::is_same<iter, end_type>::value>::type type;

+};

+

+double test_is_valid_arg(...);

+double test_is_default_arg(...);

+char test_is_valid_arg(const default_policy*);

+char test_is_default_arg(const default_policy*);

+

+template <class T>

+struct is_valid_policy_imp

+{

+ BOOST_STATIC_CONSTANT(bool, value = sizeof(::boost::math::policies::detail::test_is_valid_arg(static_cast<T*>(0))) == 1);

+};

+

+template <class T>

+struct is_default_policy_imp

+{

+ BOOST_STATIC_CONSTANT(bool, value = sizeof(::boost::math::policies::detail::test_is_default_arg(static_cast<T*>(0))) == 1);

+};

+

+template <class T> struct is_valid_policy

+: public mpl::bool_<

+ ::boost::math::policies::detail::is_valid_policy_imp<T>::value>

+{};

+

+template <class T> struct is_default_policy

+: public mpl::bool_<

+ ::boost::math::policies::detail::is_default_policy_imp<T>::value>

+{

+ template <class U>

+ struct apply

+ {

+ typedef is_default_policy<U> type;

+ };

+};

+

+template <class Seq, class T, int N>

+struct append_N

+{

+ typedef typename mpl::push_back<Seq, T>::type new_seq;

+ typedef typename append_N<new_seq, T, N-1>::type type;

+};

+

+template <class Seq, class T>

+struct append_N<Seq, T, 0>

+{

+ typedef Seq type;

+};

+

+//

+// Traits class to work out what template parameters our default

+// policy<> class will have when modified for forwarding:

+//

+template <bool f, bool d>

+struct default_args

+{

+ typedef promote_float<false> arg1;

+ typedef promote_double<false> arg2;

+};

+

+template <>

+struct default_args<false, false>

+{

+ typedef default_policy arg1;

+ typedef default_policy arg2;

+};

+

+template <>

+struct default_args<true, false>

+{

+ typedef promote_float<false> arg1;

+ typedef default_policy arg2;

+};

+

+template <>

+struct default_args<false, true>

+{

+ typedef promote_double<false> arg1;

+ typedef default_policy arg2;

+};

+

+typedef default_args<BOOST_MATH_PROMOTE_FLOAT_POLICY, BOOST_MATH_PROMOTE_DOUBLE_POLICY>::arg1 forwarding_arg1;

+typedef default_args<BOOST_MATH_PROMOTE_FLOAT_POLICY, BOOST_MATH_PROMOTE_DOUBLE_POLICY>::arg2 forwarding_arg2;

+

+} // detail

+//

+// Now define the policy type with enough arguments to handle all

+// the policies:

+//

+template <class A1 = default_policy,

+ class A2 = default_policy,

+ class A3 = default_policy,

+ class A4 = default_policy,

+ class A5 = default_policy,

+ class A6 = default_policy,

+ class A7 = default_policy,

+ class A8 = default_policy,

+ class A9 = default_policy,

+ class A10 = default_policy,

+ class A11 = default_policy,

+ class A12 = default_policy,

+ class A13 = default_policy>

+struct policy

+{

+private:

+ //

+ // Validate all our arguments:

+ //

+ BOOST_STATIC_ASSERT(::boost::math::policies::detail::is_valid_policy<A1>::value);

+ BOOST_STATIC_ASSERT(::boost::math::policies::detail::is_valid_policy<A2>::value);

+ BOOST_STATIC_ASSERT(::boost::math::policies::detail::is_valid_policy<A3>::value);

+ BOOST_STATIC_ASSERT(::boost::math::policies::detail::is_valid_policy<A4>::value);

+ BOOST_STATIC_ASSERT(::boost::math::policies::detail::is_valid_policy<A5>::value);

+ BOOST_STATIC_ASSERT(::boost::math::policies::detail::is_valid_policy<A6>::value);

+ BOOST_STATIC_ASSERT(::boost::math::policies::detail::is_valid_policy<A7>::value);

+ BOOST_STATIC_ASSERT(::boost::math::policies::detail::is_valid_policy<A8>::value);

+ BOOST_STATIC_ASSERT(::boost::math::policies::detail::is_valid_policy<A9>::value);

+ BOOST_STATIC_ASSERT(::boost::math::policies::detail::is_valid_policy<A10>::value);

+ BOOST_STATIC_ASSERT(::boost::math::policies::detail::is_valid_policy<A11>::value);

+ BOOST_STATIC_ASSERT(::boost::math::policies::detail::is_valid_policy<A12>::value);

+ BOOST_STATIC_ASSERT(::boost::math::policies::detail::is_valid_policy<A13>::value);

+ //

+ // Typelist of the arguments:

+ //

+ typedef mpl::list<A1,A2,A3,A4,A5,A6,A7,A8,A9,A10,A11,A12,A13> arg_list;

+

+public:

+ typedef typename detail::find_arg<arg_list, is_domain_error<mpl::_1>, domain_error<> >::type domain_error_type;

+ typedef typename detail::find_arg<arg_list, is_pole_error<mpl::_1>, pole_error<> >::type pole_error_type;

+ typedef typename detail::find_arg<arg_list, is_overflow_error<mpl::_1>, overflow_error<> >::type overflow_error_type;

+ typedef typename detail::find_arg<arg_list, is_underflow_error<mpl::_1>, underflow_error<> >::type underflow_error_type;

+ typedef typename detail::find_arg<arg_list, is_denorm_error<mpl::_1>, denorm_error<> >::type denorm_error_type;

+ typedef typename detail::find_arg<arg_list, is_evaluation_error<mpl::_1>, evaluation_error<> >::type evaluation_error_type;

+ typedef typename detail::find_arg<arg_list, is_rounding_error<mpl::_1>, rounding_error<> >::type rounding_error_type;

+ typedef typename detail::find_arg<arg_list, is_indeterminate_result_error<mpl::_1>, indeterminate_result_error<> >::type indeterminate_result_error_type;

+private:

+ //

+ // Now work out the precision:

+ //

+ typedef typename detail::find_arg<arg_list, is_digits10<mpl::_1>, digits10<> >::type digits10_type;

+ typedef typename detail::find_arg<arg_list, is_digits2<mpl::_1>, digits2<> >::type bits_precision_type;

+public:

+ typedef typename detail::precision<digits10_type, bits_precision_type>::type precision_type;

+ //

+ // Internal promotion:

+ //

+ typedef typename detail::find_arg<arg_list, is_promote_float<mpl::_1>, promote_float<> >::type promote_float_type;

+ typedef typename detail::find_arg<arg_list, is_promote_double<mpl::_1>, promote_double<> >::type promote_double_type;

+ //

+ // Discrete quantiles:

+ //

+ typedef typename detail::find_arg<arg_list, is_discrete_quantile<mpl::_1>, discrete_quantile<> >::type discrete_quantile_type;

+ //

+ // Mathematically undefined properties:

+ //

+ typedef typename detail::find_arg<arg_list, is_assert_undefined<mpl::_1>, assert_undefined<> >::type assert_undefined_type;

+ //

+ // Max iterations:

+ //

+ typedef typename detail::find_arg<arg_list, is_max_series_iterations<mpl::_1>, max_series_iterations<> >::type max_series_iterations_type;

+ typedef typename detail::find_arg<arg_list, is_max_root_iterations<mpl::_1>, max_root_iterations<> >::type max_root_iterations_type;

+};

+//

+// These full specializations are defined to reduce the amount of

+// template instantiations that have to take place when using the default

+// policies, they have quite a large impact on compile times:

+//

+template <>

+struct policy<default_policy, default_policy, default_policy, default_policy, default_policy, default_policy, default_policy, default_policy, default_policy, default_policy, default_policy>

+{

+public:

+ typedef domain_error<> domain_error_type;

+ typedef pole_error<> pole_error_type;

+ typedef overflow_error<> overflow_error_type;

+ typedef underflow_error<> underflow_error_type;

+ typedef denorm_error<> denorm_error_type;

+ typedef evaluation_error<> evaluation_error_type;

+ typedef rounding_error<> rounding_error_type;

+ typedef indeterminate_result_error<> indeterminate_result_error_type;

+#if BOOST_MATH_DIGITS10_POLICY == 0

+ typedef digits2<> precision_type;

+#else

+ typedef detail::precision<digits10<>, digits2<> >::type precision_type;

+#endif

+ typedef promote_float<> promote_float_type;

+ typedef promote_double<> promote_double_type;

+ typedef discrete_quantile<> discrete_quantile_type;

+ typedef assert_undefined<> assert_undefined_type;

+ typedef max_series_iterations<> max_series_iterations_type;

+ typedef max_root_iterations<> max_root_iterations_type;

+};

+

+template <>

+struct policy<detail::forwarding_arg1, detail::forwarding_arg2, default_policy, default_policy, default_policy, default_policy, default_policy, default_policy, default_policy, default_policy, default_policy>

+{

+public:

+ typedef domain_error<> domain_error_type;

+ typedef pole_error<> pole_error_type;

+ typedef overflow_error<> overflow_error_type;

+ typedef underflow_error<> underflow_error_type;

+ typedef denorm_error<> denorm_error_type;

+ typedef evaluation_error<> evaluation_error_type;

+ typedef rounding_error<> rounding_error_type;

+ typedef indeterminate_result_error<> indeterminate_result_error_type;

+#if BOOST_MATH_DIGITS10_POLICY == 0

+ typedef digits2<> precision_type;

+#else

+ typedef detail::precision<digits10<>, digits2<> >::type precision_type;

+#endif

+ typedef promote_float<false> promote_float_type;

+ typedef promote_double<false> promote_double_type;

+ typedef discrete_quantile<> discrete_quantile_type;

+ typedef assert_undefined<> assert_undefined_type;

+ typedef max_series_iterations<> max_series_iterations_type;

+ typedef max_root_iterations<> max_root_iterations_type;

+};

+

+template <class Policy,

+ class A1 = default_policy,

+ class A2 = default_policy,

+ class A3 = default_policy,

+ class A4 = default_policy,

+ class A5 = default_policy,

+ class A6 = default_policy,

+ class A7 = default_policy,

+ class A8 = default_policy,

+ class A9 = default_policy,

+ class A10 = default_policy,

+ class A11 = default_policy,

+ class A12 = default_policy,

+ class A13 = default_policy>

+struct normalise

+{

+private:

+ typedef mpl::list<A1,A2,A3,A4,A5,A6,A7,A8,A9,A10,A11,A12,A13> arg_list;

+ typedef typename detail::find_arg<arg_list, is_domain_error<mpl::_1>, typename Policy::domain_error_type >::type domain_error_type;

+ typedef typename detail::find_arg<arg_list, is_pole_error<mpl::_1>, typename Policy::pole_error_type >::type pole_error_type;

+ typedef typename detail::find_arg<arg_list, is_overflow_error<mpl::_1>, typename Policy::overflow_error_type >::type overflow_error_type;

+ typedef typename detail::find_arg<arg_list, is_underflow_error<mpl::_1>, typename Policy::underflow_error_type >::type underflow_error_type;

+ typedef typename detail::find_arg<arg_list, is_denorm_error<mpl::_1>, typename Policy::denorm_error_type >::type denorm_error_type;

+ typedef typename detail::find_arg<arg_list, is_evaluation_error<mpl::_1>, typename Policy::evaluation_error_type >::type evaluation_error_type;

+ typedef typename detail::find_arg<arg_list, is_rounding_error<mpl::_1>, typename Policy::rounding_error_type >::type rounding_error_type;

+ typedef typename detail::find_arg<arg_list, is_indeterminate_result_error<mpl::_1>, typename Policy::indeterminate_result_error_type >::type indeterminate_result_error_type;

+ //

+ // Now work out the precision:

+ //

+ typedef typename detail::find_arg<arg_list, is_digits10<mpl::_1>, digits10<> >::type digits10_type;

+ typedef typename detail::find_arg<arg_list, is_digits2<mpl::_1>, typename Policy::precision_type >::type bits_precision_type;

+ typedef typename detail::precision<digits10_type, bits_precision_type>::type precision_type;

+ //

+ // Internal promotion:

+ //

+ typedef typename detail::find_arg<arg_list, is_promote_float<mpl::_1>, typename Policy::promote_float_type >::type promote_float_type;

+ typedef typename detail::find_arg<arg_list, is_promote_double<mpl::_1>, typename Policy::promote_double_type >::type promote_double_type;

+ //

+ // Discrete quantiles:

+ //

+ typedef typename detail::find_arg<arg_list, is_discrete_quantile<mpl::_1>, typename Policy::discrete_quantile_type >::type discrete_quantile_type;

+ //

+ // Mathematically undefined properties:

+ //

+ typedef typename detail::find_arg<arg_list, is_assert_undefined<mpl::_1>, typename Policy::assert_undefined_type >::type assert_undefined_type;

+ //

+ // Max iterations:

+ //

+ typedef typename detail::find_arg<arg_list, is_max_series_iterations<mpl::_1>, typename Policy::max_series_iterations_type>::type max_series_iterations_type;

+ typedef typename detail::find_arg<arg_list, is_max_root_iterations<mpl::_1>, typename Policy::max_root_iterations_type>::type max_root_iterations_type;

+ //

+ // Define a typelist of the policies:

+ //

+ typedef mpl::vector<

+ domain_error_type,

+ pole_error_type,

+ overflow_error_type,

+ underflow_error_type,

+ denorm_error_type,

+ evaluation_error_type,

+ rounding_error_type,

+ indeterminate_result_error_type,

+ precision_type,

+ promote_float_type,

+ promote_double_type,

+ discrete_quantile_type,

+ assert_undefined_type,

+ max_series_iterations_type,

+ max_root_iterations_type> result_list;

+ //

+ // Remove all the policies that are the same as the default:

+ //

+ typedef typename mpl::remove_if<result_list, detail::is_default_policy<mpl::_> >::type reduced_list;

+ //

+ // Pad out the list with defaults:

+ //

+ typedef typename detail::append_N<reduced_list, default_policy, (14 - ::boost::mpl::size<reduced_list>::value)>::type result_type;

+public:

+ typedef policy<

+ typename mpl::at<result_type, mpl::int_<0> >::type,

+ typename mpl::at<result_type, mpl::int_<1> >::type,

+ typename mpl::at<result_type, mpl::int_<2> >::type,

+ typename mpl::at<result_type, mpl::int_<3> >::type,

+ typename mpl::at<result_type, mpl::int_<4> >::type,

+ typename mpl::at<result_type, mpl::int_<5> >::type,

+ typename mpl::at<result_type, mpl::int_<6> >::type,

+ typename mpl::at<result_type, mpl::int_<7> >::type,

+ typename mpl::at<result_type, mpl::int_<8> >::type,

+ typename mpl::at<result_type, mpl::int_<9> >::type,

+ typename mpl::at<result_type, mpl::int_<10> >::type,

+ typename mpl::at<result_type, mpl::int_<11> >::type,

+ typename mpl::at<result_type, mpl::int_<12> >::type > type;

+};

+//

+// Full specialisation to speed up compilation of the common case:

+//

+template <>

+struct normalise<policy<>,

+ promote_float<false>,

+ promote_double<false>,

+ discrete_quantile<>,

+ assert_undefined<>,

+ default_policy,

+ default_policy,

+ default_policy,

+ default_policy,

+ default_policy,

+ default_policy,

+ default_policy>

+{

+ typedef policy<detail::forwarding_arg1, detail::forwarding_arg2> type;

+};

+

+template <>

+struct normalise<policy<detail::forwarding_arg1, detail::forwarding_arg2>,

+ promote_float<false>,

+ promote_double<false>,

+ discrete_quantile<>,

+ assert_undefined<>,

+ default_policy,

+ default_policy,

+ default_policy,

+ default_policy,

+ default_policy,

+ default_policy,

+ default_policy>

+{

+ typedef policy<detail::forwarding_arg1, detail::forwarding_arg2> type;

+};

+

+inline policy<> make_policy()

+{ return policy<>(); }

+

+template <class A1>

+inline typename normalise<policy<>, A1>::type make_policy(const A1&)

+{

+ typedef typename normalise<policy<>, A1>::type result_type;

+ return result_type();

+}

+

+template <class A1, class A2>

+inline typename normalise<policy<>, A1, A2>::type make_policy(const A1&, const A2&)

+{

+ typedef typename normalise<policy<>, A1, A2>::type result_type;

+ return result_type();

+}

+

+template <class A1, class A2, class A3>

+inline typename normalise<policy<>, A1, A2, A3>::type make_policy(const A1&, const A2&, const A3&)

+{

+ typedef typename normalise<policy<>, A1, A2, A3>::type result_type;

+ return result_type();

+}

+

+template <class A1, class A2, class A3, class A4>

+inline typename normalise<policy<>, A1, A2, A3, A4>::type make_policy(const A1&, const A2&, const A3&, const A4&)

+{

+ typedef typename normalise<policy<>, A1, A2, A3, A4>::type result_type;

+ return result_type();

+}

+

+template <class A1, class A2, class A3, class A4, class A5>

+inline typename normalise<policy<>, A1, A2, A3, A4, A5>::type make_policy(const A1&, const A2&, const A3&, const A4&, const A5&)

+{

+ typedef typename normalise<policy<>, A1, A2, A3, A4, A5>::type result_type;

+ return result_type();

+}

+

+template <class A1, class A2, class A3, class A4, class A5, class A6>

+inline typename normalise<policy<>, A1, A2, A3, A4, A5, A6>::type make_policy(const A1&, const A2&, const A3&, const A4&, const A5&, const A6&)

+{

+ typedef typename normalise<policy<>, A1, A2, A3, A4, A5, A6>::type result_type;

+ return result_type();

+}

+

+template <class A1, class A2, class A3, class A4, class A5, class A6, class A7>

+inline typename normalise<policy<>, A1, A2, A3, A4, A5, A6, A7>::type make_policy(const A1&, const A2&, const A3&, const A4&, const A5&, const A6&, const A7&)

+{

+ typedef typename normalise<policy<>, A1, A2, A3, A4, A5, A6, A7>::type result_type;

+ return result_type();

+}

+

+template <class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8>

+inline typename normalise<policy<>, A1, A2, A3, A4, A5, A6, A7, A8>::type make_policy(const A1&, const A2&, const A3&, const A4&, const A5&, const A6&, const A7&, const A8&)

+{

+ typedef typename normalise<policy<>, A1, A2, A3, A4, A5, A6, A7, A8>::type result_type;

+ return result_type();

+}

+

+template <class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9>

+inline typename normalise<policy<>, A1, A2, A3, A4, A5, A6, A7, A8, A9>::type make_policy(const A1&, const A2&, const A3&, const A4&, const A5&, const A6&, const A7&, const A8&, const A9&)

+{

+ typedef typename normalise<policy<>, A1, A2, A3, A4, A5, A6, A7, A8, A9>::type result_type;

+ return result_type();

+}

+

+template <class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9, class A10>

+inline typename normalise<policy<>, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10>::type make_policy(const A1&, const A2&, const A3&, const A4&, const A5&, const A6&, const A7&, const A8&, const A9&, const A10&)

+{

+ typedef typename normalise<policy<>, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10>::type result_type;

+ return result_type();

+}

+

+template <class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9, class A10, class A11>

+inline typename normalise<policy<>, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11>::type make_policy(const A1&, const A2&, const A3&, const A4&, const A5&, const A6&, const A7&, const A8&, const A9&, const A10&, const A11&)

+{

+ typedef typename normalise<policy<>, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11>::type result_type;

+ return result_type();

+}

+

+//

+// Traits class to handle internal promotion:

+//

+template <class Real, class Policy>

+struct evaluation

+{

+ typedef Real type;

+};

+

+template <class Policy>

+struct evaluation<float, Policy>

+{

+ typedef typename mpl::if_<typename Policy::promote_float_type, double, float>::type type;

+};

+

+template <class Policy>

+struct evaluation<double, Policy>

+{

+ typedef typename mpl::if_<typename Policy::promote_double_type, long double, double>::type type;

+};

+

+#ifdef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS

+

+template <class Real>

+struct basic_digits : public mpl::int_<0>{ };

+template <>

+struct basic_digits<float> : public mpl::int_<FLT_MANT_DIG>{ };

+template <>

+struct basic_digits<double> : public mpl::int_<DBL_MANT_DIG>{ };

+template <>

+struct basic_digits<long double> : public mpl::int_<LDBL_MANT_DIG>{ };

+

+template <class Real, class Policy>

+struct precision

+{

+ BOOST_STATIC_ASSERT( ::std::numeric_limits<Real>::radix == 2);

+ typedef typename Policy::precision_type precision_type;

+ typedef basic_digits<Real> digits_t;

+ typedef typename mpl::if_<

+ mpl::equal_to<digits_t, mpl::int_<0> >,

+ // Possibly unknown precision:

+ precision_type,

+ typename mpl::if_<

+ mpl::or_<mpl::less_equal<digits_t, precision_type>, mpl::less_equal<precision_type, mpl::int_<0> > >,

+ // Default case, full precision for RealType:

+ digits2< ::std::numeric_limits<Real>::digits>,

+ // User customised precision:

+ precision_type

+ >::type

+ >::type type;

+};

+

+template <class Policy>

+struct precision<float, Policy>

+{

+ typedef digits2<FLT_MANT_DIG> type;

+};

+template <class Policy>

+struct precision<double, Policy>

+{

+ typedef digits2<DBL_MANT_DIG> type;

+};

+template <class Policy>

+struct precision<long double, Policy>

+{

+ typedef digits2<LDBL_MANT_DIG> type;

+};

+

+#else

+

+template <class Real, class Policy>

+struct precision

+{

+ BOOST_STATIC_ASSERT((::std::numeric_limits<Real>::radix == 2) || ((::std::numeric_limits<Real>::is_specialized == 0) || (::std::numeric_limits<Real>::digits == 0)));

+#ifndef __BORLANDC__

+ typedef typename Policy::precision_type precision_type;

+ typedef typename mpl::if_c<

+ ((::std::numeric_limits<Real>::is_specialized == 0) || (::std::numeric_limits<Real>::digits == 0)),

+ // Possibly unknown precision:

+ precision_type,

+ typename mpl::if_c<

+ ((::std::numeric_limits<Real>::digits <= precision_type::value)

+ || (Policy::precision_type::value <= 0)),

+ // Default case, full precision for RealType:

+ digits2< ::std::numeric_limits<Real>::digits>,

+ // User customised precision:

+ precision_type

+ >::type

+ >::type type;

+#else

+ typedef typename Policy::precision_type precision_type;

+ typedef mpl::int_< ::std::numeric_limits<Real>::digits> digits_t;

+ typedef mpl::bool_< ::std::numeric_limits<Real>::is_specialized> spec_t;

+ typedef typename mpl::if_<

+ mpl::or_<mpl::equal_to<spec_t, mpl::false_>, mpl::equal_to<digits_t, mpl::int_<0> > >,

+ // Possibly unknown precision:

+ precision_type,

+ typename mpl::if_<

+ mpl::or_<mpl::less_equal<digits_t, precision_type>, mpl::less_equal<precision_type, mpl::int_<0> > >,

+ // Default case, full precision for RealType:

+ digits2< ::std::numeric_limits<Real>::digits>,

+ // User customised precision:

+ precision_type

+ >::type

+ >::type type;

+#endif

+};

+

+#endif

+

+namespace detail{

+

+template <class T, class Policy>

+inline int digits_imp(mpl::true_ const&)

+{

+#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS

+ BOOST_STATIC_ASSERT( ::std::numeric_limits<T>::is_specialized);

+#else

+ BOOST_ASSERT(::std::numeric_limits<T>::is_specialized);

+#endif

+ typedef typename boost::math::policies::precision<T, Policy>::type p_t;

+ return p_t::value;

+}

+

+template <class T, class Policy>

+inline int digits_imp(mpl::false_ const&)

+{

+ return tools::digits<T>();

+}

+

+} // namespace detail

+

+template <class T, class Policy>

+inline int digits(BOOST_MATH_EXPLICIT_TEMPLATE_TYPE(T))

+{

+ typedef mpl::bool_< std::numeric_limits<T>::is_specialized > tag_type;

+ return detail::digits_imp<T, Policy>(tag_type());

+}

+

+template <class Policy>

+inline unsigned long get_max_series_iterations()

+{

+ typedef typename Policy::max_series_iterations_type iter_type;

+ return iter_type::value;

+}

+

+template <class Policy>

+inline unsigned long get_max_root_iterations()

+{

+ typedef typename Policy::max_root_iterations_type iter_type;

+ return iter_type::value;

+}

+

+namespace detail{

+

+template <class T, class Digits, class Small, class Default>

+struct series_factor_calc

+{

+ static T get()

+ {

+ return ldexp(T(1.0), 1 - Digits::value);

+ }

+};

+

+template <class T, class Digits>

+struct series_factor_calc<T, Digits, mpl::true_, mpl::true_>

+{

+ static T get()

+ {

+ return boost::math::tools::epsilon<T>();

+ }

+};

+template <class T, class Digits>

+struct series_factor_calc<T, Digits, mpl::true_, mpl::false_>

+{

+ static T get()

+ {

+ static const boost::uintmax_t v = static_cast<boost::uintmax_t>(1u) << (Digits::value - 1);

+ return 1 / static_cast<T>(v);

+ }

+};

+template <class T, class Digits>

+struct series_factor_calc<T, Digits, mpl::false_, mpl::true_>

+{

+ static T get()

+ {

+ return boost::math::tools::epsilon<T>();

+ }

+};

+

+template <class T, class Policy>

+inline T get_epsilon_imp(mpl::true_ const&)

+{

+#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS

+ BOOST_STATIC_ASSERT( ::std::numeric_limits<T>::is_specialized);

+ BOOST_STATIC_ASSERT( ::std::numeric_limits<T>::radix == 2);

+#else

+ BOOST_ASSERT(::std::numeric_limits<T>::is_specialized);

+ BOOST_ASSERT(::std::numeric_limits<T>::radix == 2);

+#endif

+ typedef typename boost::math::policies::precision<T, Policy>::type p_t;

+ typedef mpl::bool_<p_t::value <= std::numeric_limits<boost::uintmax_t>::digits> is_small_int;

+ typedef mpl::bool_<p_t::value >= std::numeric_limits<T>::digits> is_default_value;

+ return series_factor_calc<T, p_t, is_small_int, is_default_value>::get();

+}

+

+template <class T, class Policy>

+inline T get_epsilon_imp(mpl::false_ const&)

+{

+ return tools::epsilon<T>();

+}

+

+} // namespace detail

+

+template <class T, class Policy>

+inline T get_epsilon(BOOST_MATH_EXPLICIT_TEMPLATE_TYPE(T))

+{

+ typedef mpl::bool_< (std::numeric_limits<T>::is_specialized && (std::numeric_limits<T>::radix == 2)) > tag_type;

+ return detail::get_epsilon_imp<T, Policy>(tag_type());

+}

+

+namespace detail{

+

+template <class A1,

+ class A2,

+ class A3,

+ class A4,

+ class A5,

+ class A6,

+ class A7,

+ class A8,

+ class A9,

+ class A10,

+ class A11>

+char test_is_policy(const policy<A1,A2,A3,A4,A5,A6,A7,A8,A9,A10,A11>*);

+double test_is_policy(...);

+

+template <class P>

+struct is_policy_imp

+{

+ BOOST_STATIC_CONSTANT(bool, value = (sizeof(::boost::math::policies::detail::test_is_policy(static_cast<P*>(0))) == 1));

+};

+

+}

+

+template <class P>

+struct is_policy : public mpl::bool_< ::boost::math::policies::detail::is_policy_imp<P>::value> {};

+

+//

+// Helper traits class for distribution error handling:

+//

+template <class Policy>

+struct constructor_error_check

+{

+ typedef typename Policy::domain_error_type domain_error_type;

+ typedef typename mpl::if_c<

+ (domain_error_type::value == throw_on_error) || (domain_error_type::value == user_error),

+ mpl::true_,

+ mpl::false_>::type type;

+};

+

+template <class Policy>

+struct method_error_check

+{

+ typedef typename Policy::domain_error_type domain_error_type;

+ typedef typename mpl::if_c<

+ (domain_error_type::value == throw_on_error) && (domain_error_type::value != user_error),

+ mpl::false_,

+ mpl::true_>::type type;

+};

+

+}}} // namespaces

+

+#endif // BOOST_MATH_POLICY_HPP

+

+

+