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add c++14 constexpr version: generate, generate_n

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This commit is contained in:
bolero-MURAKAMI 2013-10-17 19:22:40 +09:00
parent e0629a21ce
commit cc4cad6895
3 changed files with 46 additions and 1 deletions
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15
sprout/algorithm/fixed/generate_n.hpp
View file

@ -32,7 +32,20 @@ namespace sprout {
}
} // namespace fixed
using sprout::fixed::generate_n;
template<
typename Container, typename Size, typename Generator,
typename sprout::enabler_if<!sprout::is_output_iterator<Container>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Container>::type
generate_n(Container const& cont, Size n, Generator const& gen) {
return sprout::fixed::generate_n(cont, n, gen);
}
template<typename Container, typename Size, typename Generator>
inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Container>::type
generate_n(Size n, Generator const& gen) {
return sprout::fixed::generate_n<Container>(n, gen);
}
} // namespace sprout
#endif // #ifndef SPROUT_ALGORITHM_FIXED_GENERATE_N_HPP

14
sprout/algorithm/generate.hpp
View file

@ -9,6 +9,20 @@
#define SPROUT_ALGORITHM_GENERATE_HPP
#include <sprout/config.hpp>
namespace sprout {
//
// 25.3.7 Generate
//
template<typename ForwrdIterator, typename Generator>
inline SPROUT_CXX14_CONSTEXPR void
generate(ForwrdIterator first, ForwrdIterator last, Generator gen) {
while (first != last) {
*first++ = gen();
}
}
} // namespace sprout
#include <sprout/algorithm/fixed/generate.hpp>
#include <sprout/algorithm/fit/generate.hpp>

18
sprout/algorithm/generate_n.hpp
View file

@ -9,6 +9,24 @@
#define SPROUT_ALGORITHM_GENERATE_N_HPP
#include <sprout/config.hpp>
namespace sprout {
//
// 25.3.7 Generate
//
template<
typename OutputIterator, typename Size, typename Generator,
typename sprout::enabler_if<sprout::is_output_iterator<OutputIterator>::value>::type = sprout::enabler
>
inline SPROUT_CXX14_CONSTEXPR OutputIterator
generate_n(OutputIterator first, Size n, Generator gen) {
while (n-- > 0) {
*first++ = gen();
}
return first;
}
} // namespace sprout
#include <sprout/algorithm/fixed/generate_n.hpp>
#include <sprout/algorithm/fit/generate_n.hpp>