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workaround for clang3.2 (gcd, uniform_01)

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bolero-MURAKAMI 2012-11-12 13:29:56 +09:00
parent aca22bec98
commit bf937bc508
5 changed files with 168 additions and 25 deletions
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64
sprout/random/uniform_01.hpp
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@ -6,6 +6,10 @@
#include <limits>
#include <sprout/config.hpp>
#include <sprout/random/random_result.hpp>
#ifdef SPROUT_WORKAROUND_NOT_TERMINATE_RECURSIVE_CONSTEXPR_FUNCTION_TEMPLATE
# include <stdexcept>
# include <sprout/workaround/recursive_function_template.hpp>
#endif
namespace sprout {
namespace random {
@ -49,24 +53,57 @@ namespace sprout {
}
};
private:
template<typename Engine>
SPROUT_CONSTEXPR sprout::random::random_result<Engine, uniform_01> generate_1(
Engine const& eng,
sprout::random::random_result<Engine> const& rnd,
result_type result
) const
{
#ifdef SPROUT_WORKAROUND_NOT_TERMINATE_RECURSIVE_CONSTEXPR_FUNCTION_TEMPLATE
template<int D, typename Engine, SPROUT_RECURSIVE_FUNCTION_TEMPLATE_CONTINUE(D)>
SPROUT_CONSTEXPR sprout::random::random_result<Engine, uniform_01>
generate_1(Engine const& eng, sprout::random::random_result<Engine> const& rnd, result_type result) const {
return result < result_type(1)
? sprout::random::random_result<Engine, uniform_01>(result, rnd.engine(), *this)
: operator()(rnd.engine())
: generate<D + 1>(rnd.engine(), rnd.engine()())
;
}
template<int D, typename Engine, SPROUT_RECURSIVE_FUNCTION_TEMPLATE_BREAK(D)>
SPROUT_CONSTEXPR sprout::random::random_result<Engine, uniform_01>
generate_1(Engine const& eng, sprout::random::random_result<Engine> const& rnd, result_type result) const {
return throw std::runtime_error(SPROUT_RECURSIVE_FUNCTION_TEMPLATE_INSTANTIATION_EXCEEDED_MESSAGE),
sprout::random::random_result<Engine, uniform_01>()
;
}
template<int D = 0, typename Engine, SPROUT_RECURSIVE_FUNCTION_TEMPLATE_CONTINUE(D)>
SPROUT_CONSTEXPR sprout::random::random_result<Engine, uniform_01>
generate(Engine const& eng, sprout::random::random_result<Engine> const& rnd) const {
typedef typename Engine::result_type base_result;
return generate_1<D + 1>(
eng,
rnd,
result_type(rnd.result() - eng.min()) * (
result_type(1) / (
result_type(eng.max() - eng.min()) + result_type(
std::numeric_limits<base_result>::is_integer ? 1 : 0
)
)
)
);
}
template<int D = 0, typename Engine, SPROUT_RECURSIVE_FUNCTION_TEMPLATE_BREAK(D)>
SPROUT_CONSTEXPR sprout::random::random_result<Engine, uniform_01>
generate(Engine const& eng, sprout::random::random_result<Engine> const& rnd) const {
return throw std::runtime_error(SPROUT_RECURSIVE_FUNCTION_TEMPLATE_INSTANTIATION_EXCEEDED_MESSAGE),
sprout::random::random_result<Engine, uniform_01>()
;
}
#else
template<typename Engine>
SPROUT_CONSTEXPR sprout::random::random_result<Engine, uniform_01>
generate_1(Engine const& eng, sprout::random::random_result<Engine> const& rnd, result_type result) const {
return result < result_type(1)
? sprout::random::random_result<Engine, uniform_01>(result, rnd.engine(), *this)
: generate(rnd.engine(), rnd.engine()())
;
}
template<typename Engine>
SPROUT_CONSTEXPR sprout::random::random_result<Engine, uniform_01> generate(
Engine const& eng,
sprout::random::random_result<Engine> const& rnd
) const
{
SPROUT_CONSTEXPR sprout::random::random_result<Engine, uniform_01>
generate(Engine const& eng, sprout::random::random_result<Engine> const& rnd) const {
typedef typename Engine::result_type base_result;
return generate_1(
eng,
@ -80,6 +117,7 @@ namespace sprout {
)
);
}
#endif
public:
explicit SPROUT_CONSTEXPR uniform_01()
{}