diff --git a/sprout/algorithm/bogo_sort.hpp b/sprout/algorithm/bogo_sort.hpp
index 905410dc..7526e37a 100644
--- a/sprout/algorithm/bogo_sort.hpp
+++ b/sprout/algorithm/bogo_sort.hpp
@@ -11,5 +11,6 @@
 #include <sprout/config.hpp>
 #include <sprout/algorithm/fixed/bogo_sort.hpp>
 #include <sprout/algorithm/fit/bogo_sort.hpp>
+#include <sprout/algorithm/cxx14/bogo_sort.hpp>
 
 #endif	// #ifndef SPROUT_ALGORITHM_BOGO_SORT_HPP
diff --git a/sprout/algorithm/bozo_sort.hpp b/sprout/algorithm/bozo_sort.hpp
index b138623e..66e2d22c 100644
--- a/sprout/algorithm/bozo_sort.hpp
+++ b/sprout/algorithm/bozo_sort.hpp
@@ -11,5 +11,6 @@
 #include <sprout/config.hpp>
 #include <sprout/algorithm/fixed/bozo_sort.hpp>
 #include <sprout/algorithm/fit/bozo_sort.hpp>
+#include <sprout/algorithm/cxx14/bozo_sort.hpp>
 
 #endif	// #ifndef SPROUT_ALGORITHM_BOZO_SORT_HPP
diff --git a/sprout/algorithm/clamp_range.hpp b/sprout/algorithm/clamp_range.hpp
index 0ed029d5..51850081 100644
--- a/sprout/algorithm/clamp_range.hpp
+++ b/sprout/algorithm/clamp_range.hpp
@@ -11,5 +11,6 @@
 #include <sprout/config.hpp>
 #include <sprout/algorithm/fixed/clamp_range.hpp>
 #include <sprout/algorithm/fit/clamp_range.hpp>
+#include <sprout/algorithm/cxx14/clamp_range.hpp>
 
 #endif	// #ifndef SPROUT_ALGORITHM_CLAMP_RANGE_HPP
diff --git a/sprout/algorithm/copy_until.hpp b/sprout/algorithm/copy_until.hpp
index 3e8414c4..a9d6c9e4 100644
--- a/sprout/algorithm/copy_until.hpp
+++ b/sprout/algorithm/copy_until.hpp
@@ -11,5 +11,6 @@
 #include <sprout/config.hpp>
 #include <sprout/algorithm/fixed/copy_until.hpp>
 #include <sprout/algorithm/fit/copy_until.hpp>
+#include <sprout/algorithm/cxx14/copy_until.hpp>
 
 #endif	// #ifndef SPROUT_ALGORITHM_COPY_UNTIL_HPP
diff --git a/sprout/algorithm/copy_while.hpp b/sprout/algorithm/copy_while.hpp
index 26139f10..3752b269 100644
--- a/sprout/algorithm/copy_while.hpp
+++ b/sprout/algorithm/copy_while.hpp
@@ -11,5 +11,6 @@
 #include <sprout/config.hpp>
 #include <sprout/algorithm/fixed/copy_while.hpp>
 #include <sprout/algorithm/fit/copy_while.hpp>
+#include <sprout/algorithm/cxx14/copy_while.hpp>
 
 #endif	// #ifndef SPROUT_ALGORITHM_COPY_WHILE_HPP
diff --git a/sprout/algorithm/cxx14/partial_sort.hpp b/sprout/algorithm/cxx14/partial_sort.hpp
index 2884a49b..4bce9914 100644
--- a/sprout/algorithm/cxx14/partial_sort.hpp
+++ b/sprout/algorithm/cxx14/partial_sort.hpp
@@ -8,20 +8,50 @@
 #ifndef SPROUT_ALGORITHM_CXX14_PARTIAL_SORT_HPP
 #define SPROUT_ALGORITHM_CXX14_PARTIAL_SORT_HPP
 
+#include <iterator>
+#include <type_traits>
 #include <sprout/config.hpp>
+#include <sprout/algorithm/cxx14/detail/heap_tool.hpp>
+#include <sprout/algorithm/cxx14/make_heap.hpp>
+#include <sprout/algorithm/cxx14/sort_heap.hpp>
+#include <sprout/utility/swap.hpp>
+#include HDR_FUNCTIONAL_SSCRISK_CEL_OR_SPROUT
 
 namespace sprout {
+	namespace detail {
+		template<typename Compare, typename RandomAccessIterator>
+		inline SPROUT_CXX14_CONSTEXPR void
+		partial_sort(RandomAccessIterator first, RandomAccessIterator middle, RandomAccessIterator last, Compare comp) {
+			typedef typename std::iterator_traits<RandomAccessIterator>::difference_type difference_type;
+			sprout::detail::make_heap<Compare>(first, middle, comp);
+			difference_type len = middle - first;
+			for (RandomAccessIterator i = middle; i != last; ++i) {
+				if (comp(*i, *first)) {
+					sprout::swap(*i, *first);
+					sprout::detail::push_heap_front<Compare>(first, middle, comp, len);
+				}
+			}
+			sprout::detail::sort_heap<Compare>(first, middle, comp);
+		}
+	}	// namespace detail
 	//
 	// 25.4.1.3 partial_sort
 	//
-	// !!! TODO: implementation
-	template<typename RandomAccessIterator>
-	inline SPROUT_CXX14_CONSTEXPR void
-	partial_sort(RandomAccessIterator first, RandomAccessIterator middle, RandomAccessIterator last);
-
 	template<typename RandomAccessIterator, typename Compare>
 	inline SPROUT_CXX14_CONSTEXPR void
-	partial_sort(RandomAccessIterator first, RandomAccessIterator middle, RandomAccessIterator last, Compare comp);
+	partial_sort(RandomAccessIterator first, RandomAccessIterator middle, RandomAccessIterator last, Compare comp) {
+		typedef typename std::add_lvalue_reference<Compare>::type compare_ref;
+		sprout::detail::partial_sort<compare_ref>(first, middle, last, comp);
+	}
+
+	template<typename RandomAccessIterator>
+	inline SPROUT_CXX14_CONSTEXPR void
+	partial_sort(RandomAccessIterator first, RandomAccessIterator middle, RandomAccessIterator last) {
+		sprout::partial_sort(
+			first, middle, last,
+			NS_SSCRISK_CEL_OR_SPROUT::less<typename std::iterator_traits<RandomAccessIterator>::value_type>()
+			);
+	}
 }	// namespace sprout
 
 #endif	// #ifndef SPROUT_ALGORITHM_CXX14_PARTIAL_SORT_HPP
diff --git a/sprout/algorithm/cxx14/partial_sort_copy.hpp b/sprout/algorithm/cxx14/partial_sort_copy.hpp
index 4b7b113b..82b56ba4 100644
--- a/sprout/algorithm/cxx14/partial_sort_copy.hpp
+++ b/sprout/algorithm/cxx14/partial_sort_copy.hpp
@@ -8,20 +8,56 @@
 #ifndef SPROUT_ALGORITHM_CXX14_PARTIAL_SORT_COPY_HPP
 #define SPROUT_ALGORITHM_CXX14_PARTIAL_SORT_COPY_HPP
 
+#include <iterator>
+#include <type_traits>
 #include <sprout/config.hpp>
+#include <sprout/algorithm/cxx14/detail/heap_tool.hpp>
+#include <sprout/algorithm/cxx14/make_heap.hpp>
+#include <sprout/algorithm/cxx14/sort_heap.hpp>
+#include HDR_FUNCTIONAL_SSCRISK_CEL_OR_SPROUT
 
 namespace sprout {
+	namespace detail {
+		template<typename InputIterator, typename RandomAccessIterator, typename Compare>
+		inline SPROUT_CXX14_CONSTEXPR RandomAccessIterator
+		partial_sort_copy(InputIterator first, InputIterator last, RandomAccessIterator result_first, RandomAccessIterator result_last, Compare comp) {
+			typedef typename std::iterator_traits<RandomAccessIterator>::difference_type difference_type;
+			RandomAccessIterator r = result_first;
+			if (r != result_last) {
+				difference_type len = 0;
+				for (; first != last && r != result_last; ++first, ++r, ++len) {
+					*r = *first;
+				}
+				sprout::detail::make_heap<Compare>(result_first, r, comp);
+				for (; first != last; ++first) {
+					if (comp(*first, *result_first)) {
+						*result_first = *first;
+						sprout::detail::push_heap_front<Compare>(result_first, r, comp, len);
+					}
+				}
+				sprout::detail::sort_heap<Compare>(result_first, r, comp);
+			}
+			return r;
+		}
+	}	// namespace detail
 	//
 	// 25.4.1.4 partial_sort_copy
 	//
-	// !!! TODO: implementation
-	template<typename InputIterator, typename RandomAccessIterator>
-	inline SPROUT_CXX14_CONSTEXPR RandomAccessIterator
-	partial_sort_copy(InputIterator first, InputIterator last, RandomAccessIterator result_first, RandomAccessIterator result_last);
-
 	template<typename InputIterator, typename RandomAccessIterator, typename Compare>
 	inline SPROUT_CXX14_CONSTEXPR RandomAccessIterator
-	partial_sort_copy(InputIterator first, InputIterator last, RandomAccessIterator result_first, RandomAccessIterator result_last, Compare comp);
+	partial_sort_copy(InputIterator first, InputIterator last, RandomAccessIterator result_first, RandomAccessIterator result_last, Compare comp) {
+		typedef typename std::add_lvalue_reference<Compare>::type compare_ref;
+		return sprout::detail::partial_sort_copy<compare_ref>(first, last, result_first, result_last, comp);
+	}
+
+	template<typename InputIterator, typename RandomAccessIterator>
+	inline SPROUT_CXX14_CONSTEXPR RandomAccessIterator
+	partial_sort_copy(InputIterator first, InputIterator last, RandomAccessIterator result_first, RandomAccessIterator result_last) {
+		return sprout::partial_sort_copy(
+			first, last, result_first, result_last,
+			NS_SSCRISK_CEL_OR_SPROUT::less<typename std::iterator_traits<RandomAccessIterator>::value_type>()
+			);
+	}
 }	// namespace sprout
 
 #endif	// #ifndef SPROUT_ALGORITHM_CXX14_PARTIAL_SORT_COPY_HPP
diff --git a/sprout/algorithm/inplace_merge.hpp b/sprout/algorithm/inplace_merge.hpp
index 00b84893..2bcfc770 100644
--- a/sprout/algorithm/inplace_merge.hpp
+++ b/sprout/algorithm/inplace_merge.hpp
@@ -11,5 +11,6 @@
 #include <sprout/config.hpp>
 #include <sprout/algorithm/fixed/inplace_merge.hpp>
 #include <sprout/algorithm/fit/inplace_merge.hpp>
+#include <sprout/algorithm/cxx14/inplace_merge.hpp>
 
 #endif	// #ifndef SPROUT_ALGORITHM_INPLACE_MERGE_HPP
diff --git a/sprout/algorithm/make_heap.hpp b/sprout/algorithm/make_heap.hpp
index 72c82de0..950281b5 100644
--- a/sprout/algorithm/make_heap.hpp
+++ b/sprout/algorithm/make_heap.hpp
@@ -11,5 +11,6 @@
 #include <sprout/config.hpp>
 #include <sprout/algorithm/fixed/make_heap.hpp>
 #include <sprout/algorithm/fit/make_heap.hpp>
+#include <sprout/algorithm/cxx14/make_heap.hpp>
 
 #endif	// #ifndef SPROUT_ALGORITHM_MAKE_HEAP_HPP
diff --git a/sprout/algorithm/merge.hpp b/sprout/algorithm/merge.hpp
index 892c7585..4a4287c4 100644
--- a/sprout/algorithm/merge.hpp
+++ b/sprout/algorithm/merge.hpp
@@ -11,5 +11,6 @@
 #include <sprout/config.hpp>
 #include <sprout/algorithm/fixed/merge.hpp>
 #include <sprout/algorithm/fit/merge.hpp>
+#include <sprout/algorithm/cxx14/merge.hpp>
 
 #endif	// #ifndef SPROUT_ALGORITHM_MERGE_HPP
diff --git a/sprout/algorithm/next_permutation.hpp b/sprout/algorithm/next_permutation.hpp
index 4919b53a..a8e1728c 100644
--- a/sprout/algorithm/next_permutation.hpp
+++ b/sprout/algorithm/next_permutation.hpp
@@ -11,5 +11,6 @@
 #include <sprout/config.hpp>
 #include <sprout/algorithm/fixed/next_permutation.hpp>
 #include <sprout/algorithm/fit/next_permutation.hpp>
+#include <sprout/algorithm/cxx14/next_permutation.hpp>
 
 #endif	// #ifndef SPROUT_ALGORITHM_NEXT_PERMUTATION_HPP
diff --git a/sprout/algorithm/pop_heap.hpp b/sprout/algorithm/pop_heap.hpp
index 39cec9c8..8e9e09aa 100644
--- a/sprout/algorithm/pop_heap.hpp
+++ b/sprout/algorithm/pop_heap.hpp
@@ -11,5 +11,6 @@
 #include <sprout/config.hpp>
 #include <sprout/algorithm/fixed/pop_heap.hpp>
 #include <sprout/algorithm/fit/pop_heap.hpp>
+#include <sprout/algorithm/cxx14/pop_heap.hpp>
 
 #endif	// #ifndef SPROUT_ALGORITHM_POP_HEAP_HPP
diff --git a/sprout/algorithm/prev_permutation.hpp b/sprout/algorithm/prev_permutation.hpp
index 9f9f6638..00eb0d93 100644
--- a/sprout/algorithm/prev_permutation.hpp
+++ b/sprout/algorithm/prev_permutation.hpp
@@ -11,5 +11,6 @@
 #include <sprout/config.hpp>
 #include <sprout/algorithm/fixed/prev_permutation.hpp>
 #include <sprout/algorithm/fit/prev_permutation.hpp>
+#include <sprout/algorithm/cxx14/prev_permutation.hpp>
 
 #endif	// #ifndef SPROUT_ALGORITHM_PREV_PERMUTATION_HPP
diff --git a/sprout/algorithm/push_heap.hpp b/sprout/algorithm/push_heap.hpp
index 6126fab4..26df1e10 100644
--- a/sprout/algorithm/push_heap.hpp
+++ b/sprout/algorithm/push_heap.hpp
@@ -11,5 +11,6 @@
 #include <sprout/config.hpp>
 #include <sprout/algorithm/fixed/push_heap.hpp>
 #include <sprout/algorithm/fit/push_heap.hpp>
+#include <sprout/algorithm/cxx14/push_heap.hpp>
 
 #endif	// #ifndef SPROUT_ALGORITHM_PUSH_HEAP_HPP
diff --git a/sprout/algorithm/random_swap.hpp b/sprout/algorithm/random_swap.hpp
index 042c2a63..97b0cdb8 100644
--- a/sprout/algorithm/random_swap.hpp
+++ b/sprout/algorithm/random_swap.hpp
@@ -11,5 +11,6 @@
 #include <sprout/config.hpp>
 #include <sprout/algorithm/fixed/random_swap.hpp>
 #include <sprout/algorithm/fit/random_swap.hpp>
+#include <sprout/algorithm/cxx14/random_swap.hpp>
 
 #endif	// #ifndef SPROUT_ALGORITHM_RANDOM_SWAP_HPP
diff --git a/sprout/algorithm/set_difference.hpp b/sprout/algorithm/set_difference.hpp
index 16af5f3b..fb45bd26 100644
--- a/sprout/algorithm/set_difference.hpp
+++ b/sprout/algorithm/set_difference.hpp
@@ -11,5 +11,6 @@
 #include <sprout/config.hpp>
 #include <sprout/algorithm/fixed/set_difference.hpp>
 #include <sprout/algorithm/fit/set_difference.hpp>
+#include <sprout/algorithm/cxx14/set_difference.hpp>
 
 #endif	// #ifndef SPROUT_ALGORITHM_SET_DIFFERENCE_HPP
diff --git a/sprout/algorithm/set_intersection.hpp b/sprout/algorithm/set_intersection.hpp
index e23e7375..bb9764e7 100644
--- a/sprout/algorithm/set_intersection.hpp
+++ b/sprout/algorithm/set_intersection.hpp
@@ -11,5 +11,6 @@
 #include <sprout/config.hpp>
 #include <sprout/algorithm/fixed/set_intersection.hpp>
 #include <sprout/algorithm/fit/set_intersection.hpp>
+#include <sprout/algorithm/cxx14/set_intersection.hpp>
 
 #endif	// #ifndef SPROUT_ALGORITHM_SET_INTERSECTION_HPP
diff --git a/sprout/algorithm/set_symmetric_difference.hpp b/sprout/algorithm/set_symmetric_difference.hpp
index 3b8e415e..d65afd95 100644
--- a/sprout/algorithm/set_symmetric_difference.hpp
+++ b/sprout/algorithm/set_symmetric_difference.hpp
@@ -11,5 +11,6 @@
 #include <sprout/config.hpp>
 #include <sprout/algorithm/fixed/set_symmetric_difference.hpp>
 #include <sprout/algorithm/fit/set_symmetric_difference.hpp>
+#include <sprout/algorithm/cxx14/set_symmetric_difference.hpp>
 
 #endif	// #ifndef SPROUT_ALGORITHM_SET_SYMMETRIC_DIFFERENCE_HPP
diff --git a/sprout/algorithm/set_union.hpp b/sprout/algorithm/set_union.hpp
index e38eafb2..cb89cc96 100644
--- a/sprout/algorithm/set_union.hpp
+++ b/sprout/algorithm/set_union.hpp
@@ -11,5 +11,6 @@
 #include <sprout/config.hpp>
 #include <sprout/algorithm/fixed/set_union.hpp>
 #include <sprout/algorithm/fit/set_union.hpp>
+#include <sprout/algorithm/cxx14/set_union.hpp>
 
 #endif	// #ifndef SPROUT_ALGORITHM_SET_UNION_HPP
diff --git a/sprout/algorithm/sort_heap.hpp b/sprout/algorithm/sort_heap.hpp
index 7bae2e38..117fa40b 100644
--- a/sprout/algorithm/sort_heap.hpp
+++ b/sprout/algorithm/sort_heap.hpp
@@ -11,5 +11,6 @@
 #include <sprout/config.hpp>
 #include <sprout/algorithm/fixed/sort_heap.hpp>
 #include <sprout/algorithm/fit/sort_heap.hpp>
+#include <sprout/algorithm/cxx14/sort_heap.hpp>
 
 #endif	// #ifndef SPROUT_ALGORITHM_SORT_HEAP_HPP