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fix recursion depth: distance

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add random::make_range
This commit is contained in:
bolero-MURAKAMI 2012-12-23 17:59:00 +09:00
parent 6a6fc03806
commit 5fcb039ab4
3 changed files with 86 additions and 6 deletions
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48
sprout/random/range.hpp Normal file
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@ -0,0 +1,48 @@
#ifndef SPROUT_RANDOM_RANGE_HPP
#define SPROUT_RANDOM_RANGE_HPP
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/iterator/generator_iterator.hpp>
#include <sprout/type_traits/enabler_if.hpp>
#include <sprout/range/range_container.hpp>
#include <sprout/random/iterator.hpp>
namespace sprout {
namespace random {
//
// make_range
//
template<
typename Engine, typename Distribution,
typename sprout::enabler_if<!std::is_integral<Distribution>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR auto
make_range(
Engine const& engine, Distribution const& distribution,
typename sprout::generator_iterator<typename std::remove_reference<decltype(distribution(engine))>::type>::difference_type count = -1
)
-> sprout::range::range_container<sprout::generator_iterator<typename std::remove_reference<decltype(distribution(engine))>::type> >
{
return sprout::range::range_container<sprout::generator_iterator<typename std::remove_reference<decltype(distribution(engine))>::type> >(
sprout::random::begin(engine, distribution, count),
sprout::random::end(engine, distribution)
);
}
template<typename Engine>
inline SPROUT_CONSTEXPR auto
make_range(
Engine const& engine,
typename sprout::generator_iterator<typename std::remove_reference<decltype(engine())>::type>::difference_type count = -1
)
-> sprout::range::range_container<sprout::generator_iterator<typename std::remove_reference<decltype(distribution(engine))>::type> >
{
return sprout::range::range_container<sprout::generator_iterator<typename std::remove_reference<decltype(distribution(engine))>::type> >(
sprout::random::begin(engine, count),
sprout::random::end(engine)
);
}
} // namespace random
} // namespace sprout
#endif // #ifndef SPROUT_RANDOM_RANGE_HPP