Implementation of Boyer-Moore and Boyer-Moore-Horspool searchers for the LFTS.

llvm-svn: 247036

9 files changed, 1035 insertions, 0 deletions

diff --git a/libcxx/test/std/experimental/algorithms/alg.search/search.pass.cpp b/libcxx/test/std/experimental/algorithms/alg.search/search.pass.cpp
index ce27225f284..60a44e4c26a 100644
--- a/libcxx/test/std/experimental/algorithms/alg.search/search.pass.cpp
+++ b/libcxx/test/std/experimental/algorithms/alg.search/search.pass.cpp
@@ -7,6 +7,8 @@
 //
 //===----------------------------------------------------------------------===//
 
+// UNSUPPORTED: c++98, c++03, c++11
+
 // <algorithm>
 
 //   template<class ForwardIterator, class Searcher>
diff --git a/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/default.pass.cpp b/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/default.pass.cpp
new file mode 100644
index 00000000000..7647b536aa9
--- /dev/null
+++ b/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/default.pass.cpp
@@ -0,0 +1,128 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11
+
+// <functional>
+
+// boyer_moore searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_searcher {
+// public:
+//   boyer_moore_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                        Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+// 
+//   template<class RandomAccessIterator2>
+//   RandomAccessIterator2
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+// 
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+
+#include "test_iterators.h"
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result) {
+    std::experimental::boyer_moore_searcher<Iter2> s{b2, e2};
+    assert(result == std::experimental::search(b1, e1, s));
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1));
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1));
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1));
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4));
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8));
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3));
+    int ij[] = {0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sj = sizeof(ij)/sizeof(ij[0]);
+    int ik[] = {0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sk = sizeof(ik)/sizeof(ik[0]);
+    do_search(Iter1(ij), Iter1(ij+sj), Iter2(ik), Iter2(ik+sk), Iter1(ij+6));
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1));
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1));
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1));
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4));
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8));
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3));
+    char ij[] = {0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sj = sizeof(ij)/sizeof(ij[0]);
+    char ik[] = {0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sk = sizeof(ik)/sizeof(ik[0]);
+    do_search(Iter1(ij), Iter1(ij+sj), Iter2(ik), Iter2(ik+sk), Iter1(ij+6));
+}
+
+int main() {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+}
diff --git a/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/hash.pass.cpp b/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/hash.pass.cpp
new file mode 100644
index 00000000000..1323044c870
--- /dev/null
+++ b/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/hash.pass.cpp
@@ -0,0 +1,124 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11
+
+// <functional>
+
+// boyer_moore searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_searcher {
+// public:
+//   boyer_moore_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                        Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+// 
+//   template<class RandomAccessIterator2>
+//   RandomAccessIterator2
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+// 
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+
+#include "test_iterators.h"
+
+template <typename T> struct MyHash {
+	size_t operator () (T t) const { return static_cast<size_t>(t); }
+};
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned max_count) {
+    std::experimental::boyer_moore_searcher<Iter2, 
+                 MyHash<typename std::remove_cv<typename std::iterator_traits<Iter2>::value_type>::type>>
+          s{b2, e2};
+    assert(result == std::experimental::search(b1, e1, s));
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main() {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+}
diff --git a/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/hash.pred.pass.cpp b/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/hash.pred.pass.cpp
new file mode 100644
index 00000000000..8fd5b8c9f78
--- /dev/null
+++ b/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/hash.pred.pass.cpp
@@ -0,0 +1,135 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11
+
+// <functional>
+
+// boyer_moore searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_searcher {
+// public:
+//   boyer_moore_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                        Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+// 
+//   template<class RandomAccessIterator2>
+//   RandomAccessIterator2
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+// 
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+
+#include "test_iterators.h"
+
+template <typename T> struct MyHash {
+	size_t operator () (T t) const { return static_cast<size_t>(t); }
+};
+
+struct count_equal
+{
+    static unsigned count;
+    template <class T>
+    bool operator()(const T& x, const T& y) const
+        {++count; return x == y;}
+};
+
+unsigned count_equal::count = 0;
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned max_count) {
+    std::experimental::boyer_moore_searcher<Iter2, 
+                 MyHash<typename std::remove_cv<typename std::iterator_traits<Iter2>::value_type>::type>,
+                 count_equal>
+          s{b2, e2};
+    assert(result == std::experimental::search(b1, e1, s));
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main() {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+}
diff --git a/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/pred.pass.cpp b/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/pred.pass.cpp
new file mode 100644
index 00000000000..d0655c82feb
--- /dev/null
+++ b/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/pred.pass.cpp
@@ -0,0 +1,131 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11
+
+// <functional>
+
+// boyer_moore searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_searcher {
+// public:
+//   boyer_moore_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                        Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+// 
+//   template<class RandomAccessIterator2>
+//   RandomAccessIterator2
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+// 
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+
+#include "test_iterators.h"
+
+struct count_equal
+{
+    static unsigned count;
+    template <class T>
+    bool operator()(const T& x, const T& y) const
+        {++count; return x == y;}
+};
+
+unsigned count_equal::count = 0;
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned max_count) {
+    std::experimental::boyer_moore_searcher<Iter2, 
+           typename std::hash<typename std::remove_cv<typename std::iterator_traits<Iter2>::value_type>::type>, count_equal> s{b2, e2};
+    count_equal::count = 0;
+    assert(result == std::experimental::search(b1, e1, s));
+//    assert(count_equal::count <= max_count);
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main() {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+}
diff --git a/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/default.pass.cpp b/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/default.pass.cpp
new file mode 100644
index 00000000000..af3bbbafb24
--- /dev/null
+++ b/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/default.pass.cpp
@@ -0,0 +1,128 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11
+
+// <functional>
+
+// boyer_moore_horspool searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_horspool_searcher {
+// public:
+//   boyer_moore_horspool_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                                 Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+// 
+//   template<class RandomAccessIterator2>
+//   RandomAccessIterator2
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+// 
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+
+#include "test_iterators.h"
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result) {
+    std::experimental::boyer_moore_horspool_searcher<Iter2> s{b2, e2};
+    assert(result == std::experimental::search(b1, e1, s));
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1));
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1));
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1));
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4));
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8));
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3));
+    int ij[] = {0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sj = sizeof(ij)/sizeof(ij[0]);
+    int ik[] = {0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sk = sizeof(ik)/sizeof(ik[0]);
+    do_search(Iter1(ij), Iter1(ij+sj), Iter2(ik), Iter2(ik+sk), Iter1(ij+6));
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1));
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1));
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1));
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4));
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8));
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3));
+    char ij[] = {0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sj = sizeof(ij)/sizeof(ij[0]);
+    char ik[] = {0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sk = sizeof(ik)/sizeof(ik[0]);
+    do_search(Iter1(ij), Iter1(ij+sj), Iter2(ik), Iter2(ik+sk), Iter1(ij+6));
+}
+
+int main() {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+}
diff --git a/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/hash.pass.cpp b/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/hash.pass.cpp
new file mode 100644
index 00000000000..ff289f0edeb
--- /dev/null
+++ b/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/hash.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11
+
+// <functional>
+
+// boyer_moore_horspool searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_horspool_searcher {
+// public:
+//   boyer_moore_horspool_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                                 Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+// 
+//   template<class RandomAccessIterator2>
+//   RandomAccessIterator2
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+// 
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+
+#include "test_iterators.h"
+
+template <typename T> struct MyHash {
+	size_t operator () (T t) const { return static_cast<size_t>(t); }
+};
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned max_count) {
+    std::experimental::boyer_moore_horspool_searcher<Iter2, 
+                 MyHash<typename std::remove_cv<typename std::iterator_traits<Iter2>::value_type>::type>>
+          s{b2, e2};
+    assert(result == std::experimental::search(b1, e1, s));
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main() {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+}
diff --git a/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/hash.pred.pass.cpp b/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/hash.pred.pass.cpp
new file mode 100644
index 00000000000..1150210a978
--- /dev/null
+++ b/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/hash.pred.pass.cpp
@@ -0,0 +1,134 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11
+
+// <functional>
+
+// boyer_moore_horspool searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_horspool_searcher {
+// public:
+//   boyer_moore_horspool_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                                 Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+// 
+//   template<class RandomAccessIterator2>
+//   RandomAccessIterator2
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+// 
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+
+#include "test_iterators.h"
+
+template <typename T> struct MyHash {
+	size_t operator () (T t) const { return static_cast<size_t>(t); }
+};
+
+struct count_equal
+{
+    static unsigned count;
+    template <class T>
+    bool operator()(const T& x, const T& y) const
+        {++count; return x == y;}
+};
+
+unsigned count_equal::count = 0;
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned max_count) {
+    std::experimental::boyer_moore_horspool_searcher<Iter2, 
+                 MyHash<typename std::remove_cv<typename std::iterator_traits<Iter2>::value_type>::type>,
+                 count_equal>
+          s{b2, e2};
+    assert(result == std::experimental::search(b1, e1, s));
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main() {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+}
diff --git a/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/pred.pass.cpp b/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/pred.pass.cpp
new file mode 100644
index 00000000000..55426874abe
--- /dev/null
+++ b/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/pred.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11
+
+// <functional>
+
+// boyer_moore_horspool searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_horspool_searcher {
+// public:
+//   boyer_moore_horspool_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                                 Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+// 
+//   template<class RandomAccessIterator2>
+//   RandomAccessIterator2
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+// 
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+
+#include "test_iterators.h"
+
+struct count_equal
+{
+    static unsigned count;
+    template <class T>
+    bool operator()(const T& x, const T& y) const
+        {++count; return x == y;}
+};
+
+unsigned count_equal::count = 0;
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned max_count) {
+    std::experimental::boyer_moore_horspool_searcher<Iter2, 
+           typename std::hash<typename std::remove_cv<typename std::iterator_traits<Iter2>::value_type>::type>, count_equal> s{b2, e2};
+    count_equal::count = 0;
+    assert(result == std::experimental::search(b1, e1, s));
+//    assert(count_equal::count <= max_count);
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main() {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+}