Chris@16: /* boost random/detail/seed.hpp header file
Chris@16:  *
Chris@16:  * Copyright Steven Watanabe 2009
Chris@16:  * Distributed under the Boost Software License, Version 1.0. (See
Chris@16:  * accompanying file LICENSE_1_0.txt or copy at
Chris@16:  * http://www.boost.org/LICENSE_1_0.txt)
Chris@16:  *
Chris@16:  * See http://www.boost.org for most recent version including documentation.
Chris@16:  *
Chris@101:  * $Id$
Chris@16:  */
Chris@16: 
Chris@16: #ifndef BOOST_RANDOM_DETAIL_SEED_HPP
Chris@16: #define BOOST_RANDOM_DETAIL_SEED_HPP
Chris@16: 
Chris@16: #include <boost/config.hpp>
Chris@16: 
Chris@16: // Sun seems to have trouble with the use of SFINAE for the
Chris@16: // templated constructor.  So does Borland.
Chris@16: #if !defined(BOOST_NO_SFINAE) && !defined(__SUNPRO_CC) && !defined(__BORLANDC__)
Chris@16: 
Chris@16: #include <boost/utility/enable_if.hpp>
Chris@16: #include <boost/type_traits/is_arithmetic.hpp>
Chris@101: #include <boost/mpl/bool.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace random {
Chris@16: namespace detail {
Chris@16: 
Chris@16: template<class T>
Chris@16: struct disable_seed : boost::disable_if<boost::is_arithmetic<T> > {};
Chris@16: 
Chris@16: template<class Engine, class T>
Chris@16: struct disable_constructor : disable_seed<T> {};
Chris@16: 
Chris@16: template<class Engine>
Chris@16: struct disable_constructor<Engine, Engine> {};
Chris@16: 
Chris@16: #define BOOST_RANDOM_DETAIL_GENERATOR_CONSTRUCTOR(Self, Generator, gen) \
Chris@16:     template<class Generator>                                           \
Chris@16:     explicit Self(Generator& gen, typename ::boost::random::detail::disable_constructor<Self, Generator>::type* = 0)
Chris@16: 
Chris@16: #define BOOST_RANDOM_DETAIL_GENERATOR_SEED(Self, Generator, gen)    \
Chris@16:     template<class Generator>                                       \
Chris@16:     void seed(Generator& gen, typename ::boost::random::detail::disable_seed<Generator>::type* = 0)
Chris@16: 
Chris@16: #define BOOST_RANDOM_DETAIL_SEED_SEQ_CONSTRUCTOR(Self, SeedSeq, seq)    \
Chris@16:     template<class SeedSeq>                                             \
Chris@16:     explicit Self(SeedSeq& seq, typename ::boost::random::detail::disable_constructor<Self, SeedSeq>::type* = 0)
Chris@16: 
Chris@16: #define BOOST_RANDOM_DETAIL_SEED_SEQ_SEED(Self, SeedSeq, seq)   \
Chris@16:     template<class SeedSeq>                                     \
Chris@16:     void seed(SeedSeq& seq, typename ::boost::random::detail::disable_seed<SeedSeq>::type* = 0)
Chris@16: 
Chris@16: #define BOOST_RANDOM_DETAIL_ARITHMETIC_CONSTRUCTOR(Self, T, x)  \
Chris@16:     explicit Self(const T& x)
Chris@16: 
Chris@16: #define BOOST_RANDOM_DETAIL_ARITHMETIC_SEED(Self, T, x) \
Chris@16:     void seed(const T& x)
Chris@16: }
Chris@16: }
Chris@16: }
Chris@16: 
Chris@16: #else
Chris@16: 
Chris@16: #include <boost/type_traits/is_arithmetic.hpp>
Chris@16: #include <boost/mpl/bool.hpp>
Chris@16: 
Chris@16: #define BOOST_RANDOM_DETAIL_GENERATOR_CONSTRUCTOR(Self, Generator, gen) \
Chris@16:     Self(Self& other) { *this = other; }                                \
Chris@16:     Self(const Self& other) { *this = other; }                          \
Chris@16:     template<class Generator>                                           \
Chris@16:     explicit Self(Generator& gen) {                                     \
Chris@16:         boost_random_constructor_impl(gen, ::boost::is_arithmetic<Generator>());\
Chris@16:     }                                                                   \
Chris@16:     template<class Generator>                                           \
Chris@16:     void boost_random_constructor_impl(Generator& gen, ::boost::mpl::false_)
Chris@16: 
Chris@16: #define BOOST_RANDOM_DETAIL_GENERATOR_SEED(Self, Generator, gen)    \
Chris@16:     template<class Generator>                                       \
Chris@16:     void seed(Generator& gen) {                                     \
Chris@16:         boost_random_seed_impl(gen, ::boost::is_arithmetic<Generator>());\
Chris@16:     }\
Chris@16:     template<class Generator>\
Chris@16:     void boost_random_seed_impl(Generator& gen, ::boost::mpl::false_)
Chris@16: 
Chris@16: #define BOOST_RANDOM_DETAIL_SEED_SEQ_CONSTRUCTOR(Self, SeedSeq, seq)    \
Chris@16:     Self(Self& other) { *this = other; }                                \
Chris@16:     Self(const Self& other) { *this = other; }                          \
Chris@16:     template<class SeedSeq>                                             \
Chris@16:     explicit Self(SeedSeq& seq) {                                       \
Chris@16:         boost_random_constructor_impl(seq, ::boost::is_arithmetic<SeedSeq>());\
Chris@16:     }                                                                   \
Chris@16:     template<class SeedSeq>                                             \
Chris@16:     void boost_random_constructor_impl(SeedSeq& seq, ::boost::mpl::false_)
Chris@16: 
Chris@16: #define BOOST_RANDOM_DETAIL_SEED_SEQ_SEED(Self, SeedSeq, seq)           \
Chris@16:     template<class SeedSeq>                                             \
Chris@16:     void seed(SeedSeq& seq) {                                           \
Chris@16:         boost_random_seed_impl(seq, ::boost::is_arithmetic<SeedSeq>()); \
Chris@16:     }                                                                   \
Chris@16:     template<class SeedSeq>                                             \
Chris@16:     void boost_random_seed_impl(SeedSeq& seq, ::boost::mpl::false_)
Chris@16: 
Chris@16: #define BOOST_RANDOM_DETAIL_ARITHMETIC_CONSTRUCTOR(Self, T, x)  \
Chris@16:     explicit Self(const T& x) { boost_random_constructor_impl(x, ::boost::mpl::true_()); }\
Chris@16:     void boost_random_constructor_impl(const T& x, ::boost::mpl::true_)
Chris@16: 
Chris@16: #define BOOST_RANDOM_DETAIL_ARITHMETIC_SEED(Self, T, x) \
Chris@16:     void seed(const T& x) { boost_random_seed_impl(x, ::boost::mpl::true_()); }\
Chris@16:     void boost_random_seed_impl(const T& x, ::boost::mpl::true_)
Chris@16: 
Chris@16: #endif
Chris@16: 
Chris@16: #endif