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fix random_result<E, D>::next_generator(): returns variate_generator<E, D>

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This commit is contained in:
bolero-MURAKAMI 2014-01-15 00:06:38 +09:00
parent 6e5004b6f4
commit 406a1ff789
8 changed files with 242 additions and 98 deletions
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40
sprout/random/variate_generator.hpp
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@ -11,7 +11,8 @@
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/random/detail/ptr_helper.hpp>
#include <sprout/random/random_result.hpp>
#include <sprout/random/random_result_fwd.hpp>
#include <sprout/utility/swap.hpp>
namespace sprout {
namespace random {
@ -41,6 +42,11 @@ namespace sprout {
engine_type engine_;
distribution_type distribution_;
public:
SPROUT_CONSTEXPR variate_generator()
: engine_()
, distribution_()
{}
variate_generator(variate_generator const&) = default;
SPROUT_CONSTEXPR variate_generator(
engine_param_type engine,
distribution_param_type distribution
@ -48,7 +54,7 @@ namespace sprout {
: engine_(engine)
, distribution_(distribution)
{}
SPROUT_CONSTEXPR random_result_type operator()() const {
SPROUT_CONSTEXPR random_result_type const operator()() const {
return distribution_(engine_);
}
engine_reference_type engine() SPROUT_NOEXCEPT {
@ -69,8 +75,36 @@ namespace sprout {
SPROUT_CONSTEXPR result_type max() const SPROUT_NOEXCEPT {
return distribution_.max();
}
SPROUT_CXX14_CONSTEXPR void swap(variate_generator& other)
SPROUT_NOEXCEPT_EXPR(
SPROUT_NOEXCEPT_EXPR(sprout::swap(engine_, other.engine_))
&& SPROUT_NOEXCEPT_EXPR(sprout::swap(distribution_, other.distribution_))
)
{
sprout::swap(engine_, other.engine_);
sprout::swap(distribution_, other.distribution_);
}
friend SPROUT_CONSTEXPR bool operator==(variate_generator const& lhs, variate_generator const& rhs) SPROUT_NOEXCEPT {
return lhs.engine_ == rhs.engine_
&& lhs.distribution_ == rhs.distribution_
;
}
friend SPROUT_CONSTEXPR bool operator!=(variate_generator const& lhs, variate_generator const& rhs) SPROUT_NOEXCEPT {
return !(lhs == rhs);
}
};
//
// swap
//
template<typename Engine, typename Distribution>
inline SPROUT_CXX14_CONSTEXPR void
swap(sprout::random::variate_generator<Engine, Distribution>& lhs, sprout::random::variate_generator<Engine, Distribution>& rhs)
SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(lhs.swap(rhs)))
{
lhs.swap(rhs);
}
//
// combine
//
@ -93,4 +127,6 @@ namespace sprout {
using sprout::random::variate_generator;
} // namespace sprout
#include <sprout/random/random_result.hpp>
#endif // #ifndef SPROUT_RANDOM_VARIATE_GENERATOR_HPP