Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

7 files changed, 890 insertions, 0 deletions

diff --git a/src/boost/libs/hana/test/detail/variadic/at.cpp b/src/boost/libs/hana/test/detail/variadic/at.cpp
new file mode 100644
index 000000000..ddb4bddc4
--- /dev/null
+++ b/src/boost/libs/hana/test/detail/variadic/at.cpp
@@ -0,0 +1,93 @@
+// Copyright Louis Dionne 2013-2017
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+
+#include <boost/hana/detail/variadic/at.hpp>
+
+#include <boost/hana/assert.hpp>
+#include <boost/hana/equal.hpp>
+
+#include <laws/base.hpp>
+namespace hana = boost::hana;
+namespace vd = hana::detail::variadic;
+using hana::test::ct_eq;
+
+
+struct non_pod { virtual ~non_pod() { } };
+
+template <int i> struct y { };
+
+int main() {
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::at<0>(ct_eq<0>{}),
+        ct_eq<0>{}
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::at<0>(ct_eq<0>{}, ct_eq<1>{}),
+        ct_eq<0>{}
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::at<1>(y<0>{}, ct_eq<1>{}),
+        ct_eq<1>{}
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::at<0>(ct_eq<0>{}, y<1>{}, y<2>{}),
+        ct_eq<0>{}
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::at<1>(y<0>{}, ct_eq<1>{}, y<2>{}),
+        ct_eq<1>{}
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::at<2>(y<0>{}, y<1>{}, ct_eq<2>{}),
+        ct_eq<2>{}
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::at<0>(ct_eq<0>{}, y<1>{}, y<2>{}, y<3>{}),
+        ct_eq<0>{}
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::at<1>(y<0>{}, ct_eq<1>{}, y<2>{}, y<3>{}),
+        ct_eq<1>{}
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::at<2>(y<0>{}, y<1>{}, ct_eq<2>{}, y<3>{}),
+        ct_eq<2>{}
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::at<3>(y<0>{}, y<1>{}, y<2>{}, ct_eq<3>{}),
+        ct_eq<3>{}
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::at<0>(ct_eq<0>{}, y<1>{}, y<2>{}, y<3>{}, y<4>{}),
+        ct_eq<0>{}
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::at<1>(y<0>{}, ct_eq<1>{}, y<2>{}, y<3>{}, y<4>{}),
+        ct_eq<1>{}
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::at<2>(y<0>{}, y<1>{}, ct_eq<2>{}, y<3>{}, y<4>{}),
+        ct_eq<2>{}
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::at<3>(y<0>{}, y<1>{}, y<2>{}, ct_eq<3>{}, y<4>{}),
+        ct_eq<3>{}
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::at<4>(y<0>{}, y<1>{}, y<2>{}, y<3>{}, ct_eq<4>{}),
+        ct_eq<4>{}
+    ));
+
+    // make sure we can use non-pods on both side of the fetched object
+    vd::at<0>(ct_eq<0>{}, non_pod{});
+    vd::at<1>(non_pod{}, ct_eq<1>{});
+
+    // make sure it works with const objects
+    int const i = 1;
+    vd::at<0>(i);
+}
diff --git a/src/boost/libs/hana/test/detail/variadic/drop_into.cpp b/src/boost/libs/hana/test/detail/variadic/drop_into.cpp
new file mode 100644
index 000000000..8c4aecb5d
--- /dev/null
+++ b/src/boost/libs/hana/test/detail/variadic/drop_into.cpp
@@ -0,0 +1,78 @@
+// Copyright Louis Dionne 2013-2017
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+
+#include <boost/hana/detail/variadic/drop_into.hpp>
+
+#include <boost/hana/assert.hpp>
+#include <boost/hana/equal.hpp>
+
+#include <laws/base.hpp>
+namespace hana = boost::hana;
+namespace vd = hana::detail::variadic;
+using hana::test::ct_eq;
+
+
+struct non_pod { virtual ~non_pod() { } };
+
+
+int main() {
+    hana::test::_injection<0> f{};
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<0>(f)(),
+        f()
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<0>(f)(ct_eq<0>{}),
+        f(ct_eq<0>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<0>(f)(ct_eq<0>{}, ct_eq<1>{}),
+        f(ct_eq<0>{}, ct_eq<1>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<0>(f)(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}),
+        f(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{})
+    ));
+
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<1>(f)(ct_eq<0>{}),
+        f()
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<1>(f)(ct_eq<0>{}, ct_eq<1>{}),
+        f(ct_eq<1>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<1>(f)(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}),
+        f(ct_eq<1>{}, ct_eq<2>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<1>(f)(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}),
+        f(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{})
+    ));
+
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<2>(f)(ct_eq<0>{}, ct_eq<1>{}),
+        f()
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<2>(f)(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}),
+        f(ct_eq<2>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<2>(f)(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}),
+        f(ct_eq<2>{}, ct_eq<3>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<2>(f)(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}),
+        f(ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{})
+    ));
+
+    // make sure we can use non-pods
+    vd::drop_into<1>(f)(ct_eq<0>{}, non_pod{});
+    vd::drop_into<1>(f)(non_pod{}, ct_eq<1>{});
+}
diff --git a/src/boost/libs/hana/test/detail/variadic/foldl1.cpp b/src/boost/libs/hana/test/detail/variadic/foldl1.cpp
new file mode 100644
index 000000000..e0ded2c88
--- /dev/null
+++ b/src/boost/libs/hana/test/detail/variadic/foldl1.cpp
@@ -0,0 +1,212 @@
+// Copyright Louis Dionne 2013-2017
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+
+#include <boost/hana/detail/variadic/foldl1.hpp>
+
+#include <boost/hana/assert.hpp>
+#include <boost/hana/equal.hpp>
+
+#include <laws/base.hpp>
+namespace hana = boost::hana;
+
+
+struct undefined { };
+
+template <int i>
+using x = hana::test::ct_eq<i>;
+
+int main() {
+    using hana::detail::variadic::foldl1;
+    hana::test::_injection<0> f{};
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldl1(undefined{}, x<1>{}),
+        x<1>{}
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldl1(f, x<1>{}, x<2>{}),
+        f(x<1>{}, x<2>{})
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldl1(f, x<1>{}, x<2>{}, x<3>{}),
+        f(f(x<1>{}, x<2>{}), x<3>{})
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldl1(f, x<1>{}, x<2>{}, x<3>{}, x<4>{}),
+        f(f(f(x<1>{}, x<2>{}), x<3>{}), x<4>{})
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldl1(f, x<1>{}, x<2>{}, x<3>{}, x<4>{}, x<5>{}),
+        f(f(f(f(x<1>{}, x<2>{}), x<3>{}), x<4>{}), x<5>{})
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldl1(f, x<1>{}, x<2>{}, x<3>{}, x<4>{}, x<5>{}, x<6>{}),
+        f(f(f(f(f(x<1>{}, x<2>{}), x<3>{}), x<4>{}), x<5>{}), x<6>{})
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldl1(f, x<1>{}, x<2>{}, x<3>{}, x<4>{}, x<5>{}, x<6>{}, x<7>{}),
+        f(f(f(f(f(f(x<1>{}, x<2>{}), x<3>{}), x<4>{}), x<5>{}), x<6>{}), x<7>{})
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldl1(f, x<1>{}, x<2>{}, x<3>{}, x<4>{}, x<5>{}, x<6>{}, x<7>{}, x<8>{}),
+        f(f(f(f(f(f(f(x<1>{}, x<2>{}), x<3>{}), x<4>{}), x<5>{}), x<6>{}), x<7>{}), x<8>{})
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldl1(f, x<1>{},  x<2>{},  x<3>{},  x<4>{},  x<5>{},  x<6>{},  x<7>{},
+                  x<8>{},  x<9>{}
+        ),
+        f(f(f(f(f(f(f(f(
+            x<1>{},   x<2>{}),  x<3>{}),  x<4>{}),  x<5>{}),  x<6>{}),  x<7>{}),
+            x<8>{}),  x<9>{})
+    ));
+
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldl1(f, x<1>{},  x<2>{},  x<3>{},  x<4>{},  x<5>{},  x<6>{},  x<7>{},
+                  x<8>{},  x<9>{},  x<10>{}, x<11>{}, x<12>{}, x<13>{}
+        ),
+        f(f(f(f(f(f(f(f(f(f(f(f(
+            x<1>{},   x<2>{}),  x<3>{}),  x<4>{}),  x<5>{}),  x<6>{}),  x<7>{}),
+            x<8>{}),  x<9>{}),  x<10>{}), x<11>{}), x<12>{}), x<13>{})
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldl1(f, x<1>{},  x<2>{},  x<3>{},  x<4>{},  x<5>{},  x<6>{},  x<7>{},
+                  x<8>{},  x<9>{},  x<10>{}, x<11>{}, x<12>{}, x<13>{}, x<14>{}
+        ),
+        f(f(f(f(f(f(f(f(f(f(f(f(f(
+            x<1>{},   x<2>{}),  x<3>{}),  x<4>{}),  x<5>{}),  x<6>{}),  x<7>{}),
+            x<8>{}),  x<9>{}),  x<10>{}), x<11>{}), x<12>{}), x<13>{}), x<14>{})
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldl1(f, x<1>{},  x<2>{},  x<3>{},  x<4>{},  x<5>{},  x<6>{},  x<7>{},
+                  x<8>{},  x<9>{},  x<10>{}, x<11>{}, x<12>{}, x<13>{}, x<14>{},
+                  x<15>{}
+        ),
+        f(f(f(f(f(f(f(f(f(f(f(f(f(f(
+            x<1>{},   x<2>{}),  x<3>{}),  x<4>{}),  x<5>{}),  x<6>{}),  x<7>{}),
+            x<8>{}),  x<9>{}),  x<10>{}), x<11>{}), x<12>{}), x<13>{}), x<14>{}),
+            x<15>{})
+    ));
+
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldl1(f, x<1>{},  x<2>{},  x<3>{},  x<4>{},  x<5>{},  x<6>{},  x<7>{},
+                  x<8>{},  x<9>{},  x<10>{}, x<11>{}, x<12>{}, x<13>{}, x<14>{},
+                  x<15>{}, x<16>{}, x<17>{}, x<18>{}, x<19>{}, x<20>{}, x<21>{},
+                  x<22>{}, x<23>{}, x<24>{}, x<25>{}, x<26>{}, x<27>{}
+        ),
+        f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(
+            x<1>{},   x<2>{}),  x<3>{}),  x<4>{}),  x<5>{}),  x<6>{}),  x<7>{}),
+            x<8>{}),  x<9>{}),  x<10>{}), x<11>{}), x<12>{}), x<13>{}), x<14>{}),
+            x<15>{}), x<16>{}), x<17>{}), x<18>{}), x<19>{}), x<20>{}), x<21>{}),
+            x<22>{}), x<23>{}), x<24>{}), x<25>{}), x<26>{}), x<27>{})
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldl1(f, x<1>{},  x<2>{},  x<3>{},  x<4>{},  x<5>{},  x<6>{},  x<7>{},
+                  x<8>{},  x<9>{},  x<10>{}, x<11>{}, x<12>{}, x<13>{}, x<14>{},
+                  x<15>{}, x<16>{}, x<17>{}, x<18>{}, x<19>{}, x<20>{}, x<21>{},
+                  x<22>{}, x<23>{}, x<24>{}, x<25>{}, x<26>{}, x<27>{}, x<28>{}
+        ),
+        f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(
+            x<1>{},   x<2>{}),  x<3>{}),  x<4>{}),  x<5>{}),  x<6>{}),  x<7>{}),
+            x<8>{}),  x<9>{}),  x<10>{}), x<11>{}), x<12>{}), x<13>{}), x<14>{}),
+            x<15>{}), x<16>{}), x<17>{}), x<18>{}), x<19>{}), x<20>{}), x<21>{}),
+            x<22>{}), x<23>{}), x<24>{}), x<25>{}), x<26>{}), x<27>{}), x<28>{})
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldl1(f, x<1>{},  x<2>{},  x<3>{},  x<4>{},  x<5>{},  x<6>{},  x<7>{},
+                  x<8>{},  x<9>{},  x<10>{}, x<11>{}, x<12>{}, x<13>{}, x<14>{},
+                  x<15>{}, x<16>{}, x<17>{}, x<18>{}, x<19>{}, x<20>{}, x<21>{},
+                  x<22>{}, x<23>{}, x<24>{}, x<25>{}, x<26>{}, x<27>{}, x<28>{},
+                  x<29>{}
+        ),
+        f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(
+            x<1>{},   x<2>{}),  x<3>{}),  x<4>{}),  x<5>{}),  x<6>{}),  x<7>{}),
+            x<8>{}),  x<9>{}),  x<10>{}), x<11>{}), x<12>{}), x<13>{}), x<14>{}),
+            x<15>{}), x<16>{}), x<17>{}), x<18>{}), x<19>{}), x<20>{}), x<21>{}),
+            x<22>{}), x<23>{}), x<24>{}), x<25>{}), x<26>{}), x<27>{}), x<28>{}),
+            x<29>{})
+    ));
+
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldl1(f, x<1>{},  x<2>{},  x<3>{},  x<4>{},  x<5>{},  x<6>{},  x<7>{},
+                  x<8>{},  x<9>{},  x<10>{}, x<11>{}, x<12>{}, x<13>{}, x<14>{},
+                  x<15>{}, x<16>{}, x<17>{}, x<18>{}, x<19>{}, x<20>{}, x<21>{},
+                  x<22>{}, x<23>{}, x<24>{}, x<25>{}, x<26>{}, x<27>{}, x<28>{},
+                  x<29>{}, x<30>{}, x<31>{}, x<32>{}, x<33>{}, x<34>{}, x<35>{},
+                  x<36>{}, x<37>{}, x<38>{}, x<39>{}, x<40>{}, x<41>{}, x<42>{},
+                  x<43>{}, x<44>{}, x<45>{}, x<46>{}, x<47>{}, x<48>{}, x<49>{},
+                  x<50>{}, x<51>{}, x<52>{}, x<53>{}, x<54>{}, x<55>{}
+        ),
+        f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(
+        f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(
+            x<1>{},   x<2>{}),  x<3>{}),  x<4>{}),  x<5>{}),  x<6>{}),  x<7>{}),
+            x<8>{}),  x<9>{}),  x<10>{}), x<11>{}), x<12>{}), x<13>{}), x<14>{}),
+            x<15>{}), x<16>{}), x<17>{}), x<18>{}), x<19>{}), x<20>{}), x<21>{}),
+            x<22>{}), x<23>{}), x<24>{}), x<25>{}), x<26>{}), x<27>{}), x<28>{}),
+            x<29>{}), x<30>{}), x<31>{}), x<32>{}), x<33>{}), x<34>{}), x<35>{}),
+            x<36>{}), x<37>{}), x<38>{}), x<39>{}), x<40>{}), x<41>{}), x<42>{}),
+            x<43>{}), x<44>{}), x<45>{}), x<46>{}), x<47>{}), x<48>{}), x<49>{}),
+            x<50>{}), x<51>{}), x<52>{}), x<53>{}), x<54>{}), x<55>{})
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldl1(f, x<1>{},  x<2>{},  x<3>{},  x<4>{},  x<5>{},  x<6>{},  x<7>{},
+                  x<8>{},  x<9>{},  x<10>{}, x<11>{}, x<12>{}, x<13>{}, x<14>{},
+                  x<15>{}, x<16>{}, x<17>{}, x<18>{}, x<19>{}, x<20>{}, x<21>{},
+                  x<22>{}, x<23>{}, x<24>{}, x<25>{}, x<26>{}, x<27>{}, x<28>{},
+                  x<29>{}, x<30>{}, x<31>{}, x<32>{}, x<33>{}, x<34>{}, x<35>{},
+                  x<36>{}, x<37>{}, x<38>{}, x<39>{}, x<40>{}, x<41>{}, x<42>{},
+                  x<43>{}, x<44>{}, x<45>{}, x<46>{}, x<47>{}, x<48>{}, x<49>{},
+                  x<50>{}, x<51>{}, x<52>{}, x<53>{}, x<54>{}, x<55>{}, x<56>{}
+        ),
+        f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(
+        f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(
+            x<1>{},   x<2>{}),  x<3>{}),  x<4>{}),  x<5>{}),  x<6>{}),  x<7>{}),
+            x<8>{}),  x<9>{}),  x<10>{}), x<11>{}), x<12>{}), x<13>{}), x<14>{}),
+            x<15>{}), x<16>{}), x<17>{}), x<18>{}), x<19>{}), x<20>{}), x<21>{}),
+            x<22>{}), x<23>{}), x<24>{}), x<25>{}), x<26>{}), x<27>{}), x<28>{}),
+            x<29>{}), x<30>{}), x<31>{}), x<32>{}), x<33>{}), x<34>{}), x<35>{}),
+            x<36>{}), x<37>{}), x<38>{}), x<39>{}), x<40>{}), x<41>{}), x<42>{}),
+            x<43>{}), x<44>{}), x<45>{}), x<46>{}), x<47>{}), x<48>{}), x<49>{}),
+            x<50>{}), x<51>{}), x<52>{}), x<53>{}), x<54>{}), x<55>{}), x<56>{})
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldl1(f, x<1>{},  x<2>{},  x<3>{},  x<4>{},  x<5>{},  x<6>{},  x<7>{},
+                  x<8>{},  x<9>{},  x<10>{}, x<11>{}, x<12>{}, x<13>{}, x<14>{},
+                  x<15>{}, x<16>{}, x<17>{}, x<18>{}, x<19>{}, x<20>{}, x<21>{},
+                  x<22>{}, x<23>{}, x<24>{}, x<25>{}, x<26>{}, x<27>{}, x<28>{},
+                  x<29>{}, x<30>{}, x<31>{}, x<32>{}, x<33>{}, x<34>{}, x<35>{},
+                  x<36>{}, x<37>{}, x<38>{}, x<39>{}, x<40>{}, x<41>{}, x<42>{},
+                  x<43>{}, x<44>{}, x<45>{}, x<46>{}, x<47>{}, x<48>{}, x<49>{},
+                  x<50>{}, x<51>{}, x<52>{}, x<53>{}, x<54>{}, x<55>{}, x<56>{},
+                  x<57>{}
+        ),
+        f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(
+        f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(
+            x<1>{},   x<2>{}),  x<3>{}),  x<4>{}),  x<5>{}),  x<6>{}),  x<7>{}),
+            x<8>{}),  x<9>{}),  x<10>{}), x<11>{}), x<12>{}), x<13>{}), x<14>{}),
+            x<15>{}), x<16>{}), x<17>{}), x<18>{}), x<19>{}), x<20>{}), x<21>{}),
+            x<22>{}), x<23>{}), x<24>{}), x<25>{}), x<26>{}), x<27>{}), x<28>{}),
+            x<29>{}), x<30>{}), x<31>{}), x<32>{}), x<33>{}), x<34>{}), x<35>{}),
+            x<36>{}), x<37>{}), x<38>{}), x<39>{}), x<40>{}), x<41>{}), x<42>{}),
+            x<43>{}), x<44>{}), x<45>{}), x<46>{}), x<47>{}), x<48>{}), x<49>{}),
+            x<50>{}), x<51>{}), x<52>{}), x<53>{}), x<54>{}), x<55>{}), x<56>{}),
+            x<57>{})
+    ));
+}
diff --git a/src/boost/libs/hana/test/detail/variadic/foldr1.cpp b/src/boost/libs/hana/test/detail/variadic/foldr1.cpp
new file mode 100644
index 000000000..1d7d91ed6
--- /dev/null
+++ b/src/boost/libs/hana/test/detail/variadic/foldr1.cpp
@@ -0,0 +1,207 @@
+// Copyright Louis Dionne 2013-2017
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+
+#include <boost/hana/detail/variadic/foldr1.hpp>
+
+#include <boost/hana/assert.hpp>
+#include <boost/hana/equal.hpp>
+#include <boost/hana/value.hpp>
+
+#include <laws/base.hpp>
+namespace hana = boost::hana;
+
+
+struct undefined { };
+
+template <int i>
+using x = hana::test::ct_eq<i>;
+
+// We do not use test::_injection here because comparing the result would
+// blow away the template recursion limit.
+struct f_t {
+    template <typename X, typename Y>
+    constexpr auto operator()(X const&, Y const&) {
+        return x<hana::value<X>() - hana::value<Y>()>{};
+    }
+};
+
+int main() {
+    using hana::detail::variadic::foldr1;
+    f_t f{};
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldr1(undefined{}, x<0>{}),
+        x<0>{}
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldr1(f, x<0>{}, x<1>{}),
+        f(x<0>{}, x<1>{})
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldr1(f, x<0>{}, x<1>{}, x<2>{}),
+        f(x<0>{}, f(x<1>{}, x<2>{}))
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldr1(f, x<0>{}, x<1>{}, x<2>{}, x<3>{}),
+        f(x<0>{}, f(x<1>{}, f(x<2>{}, x<3>{})))
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldr1(f, x<0>{}, x<1>{}, x<2>{}, x<3>{}, x<4>{}),
+        f(x<0>{}, f(x<1>{}, f(x<2>{}, f(x<3>{}, x<4>{}))))
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldr1(f, x<0>{}, x<1>{}, x<2>{}, x<3>{}, x<4>{}, x<5>{}),
+        f(x<0>{}, f(x<1>{}, f(x<2>{}, f(x<3>{}, f(x<4>{}, x<5>{})))))
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldr1(f, x<0>{}, x<1>{}, x<2>{}, x<3>{}, x<4>{}, x<5>{}, x<6>{}),
+        f(x<0>{}, f(x<1>{}, f(x<2>{}, f(x<3>{}, f(x<4>{}, f(x<5>{}, x<6>{}))))))
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldr1(f, x<0>{}, x<1>{}, x<2>{}, x<3>{}, x<4>{}, x<5>{}, x<6>{}, x<7>{}),
+        f(x<0>{}, f(x<1>{}, f(x<2>{}, f(x<3>{}, f(x<4>{}, f(x<5>{}, f(x<6>{}, x<7>{}
+        )))))))
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldr1(f, x<0>{}, x<1>{}, x<2>{}, x<3>{}, x<4>{}, x<5>{}, x<6>{}, x<7>{}, x<8>{}),
+        f(x<0>{}, f(x<1>{}, f(x<2>{}, f(x<3>{}, f(x<4>{}, f(x<5>{}, f(x<6>{}, f(x<7>{}, x<8>{}
+        ))))))))
+    ));
+
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldr1(f, x<1>{}, x<2>{}, x<3>{},  x<4>{},  x<5>{},  x<6>{}, x<7>{},
+                  x<8>{}, x<9>{}, x<10>{}, x<11>{}, x<12>{}, x<13>{}),
+        f(x<1>{}, f(x<2>{}, f(x<3>{}, f(x<4>{}, f(x<5>{}, f(x<6>{}, f(x<7>{},
+        f(x<8>{}, f(x<9>{}, f(x<10>{}, f(x<11>{}, f(x<12>{}, x<13>{}
+        ))))))))))))
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldr1(f, x<1>{}, x<2>{}, x<3>{},  x<4>{},  x<5>{},  x<6>{}, x<7>{},
+                  x<8>{}, x<9>{}, x<10>{}, x<11>{}, x<12>{}, x<13>{}, x<14>{}),
+        f(x<1>{}, f(x<2>{}, f(x<3>{}, f(x<4>{}, f(x<5>{}, f(x<6>{}, f(x<7>{},
+        f(x<8>{}, f(x<9>{}, f(x<10>{}, f(x<11>{}, f(x<12>{}, f(x<13>{}, x<14>{}
+        )))))))))))))
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldr1(f, x<1>{}, x<2>{}, x<3>{},  x<4>{},  x<5>{},  x<6>{}, x<7>{},
+                  x<8>{}, x<9>{}, x<10>{}, x<11>{}, x<12>{}, x<13>{}, x<14>{},
+                  x<15>{}),
+        f(x<1>{}, f(x<2>{}, f(x<3>{}, f(x<4>{}, f(x<5>{}, f(x<6>{}, f(x<7>{},
+        f(x<8>{}, f(x<9>{}, f(x<10>{}, f(x<11>{}, f(x<12>{}, f(x<13>{}, f(x<14>{}, x<15>{}
+        ))))))))))))))
+    ));
+
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldr1(f, x<1>{},  x<2>{},  x<3>{},  x<4>{},  x<5>{},  x<6>{},  x<7>{},
+                  x<8>{},  x<9>{},  x<10>{}, x<11>{}, x<12>{}, x<13>{}, x<14>{},
+                  x<15>{}, x<16>{}, x<17>{}, x<18>{}, x<19>{}, x<20>{}, x<21>{},
+                  x<22>{}, x<23>{}, x<24>{}, x<25>{}, x<26>{}, x<27>{}),
+        f(x<1>{},  f(x<2>{},  f(x<3>{},  f(x<4>{},  f(x<5>{},  f(x<6>{},  f(x<7>{},
+        f(x<8>{},  f(x<9>{},  f(x<10>{}, f(x<11>{}, f(x<12>{}, f(x<13>{}, f(x<14>{},
+        f(x<15>{}, f(x<16>{}, f(x<17>{}, f(x<18>{}, f(x<19>{}, f(x<20>{}, f(x<21>{},
+        f(x<22>{}, f(x<23>{}, f(x<24>{}, f(x<25>{}, f(x<26>{}, x<27>{}
+        ))))))))))))))))))))))))))
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldr1(f, x<1>{},  x<2>{},  x<3>{},  x<4>{},  x<5>{},  x<6>{},  x<7>{},
+                  x<8>{},  x<9>{},  x<10>{}, x<11>{}, x<12>{}, x<13>{}, x<14>{},
+                  x<15>{}, x<16>{}, x<17>{}, x<18>{}, x<19>{}, x<20>{}, x<21>{},
+                  x<22>{}, x<23>{}, x<24>{}, x<25>{}, x<26>{}, x<27>{}, x<28>{}),
+        f(x<1>{},  f(x<2>{},  f(x<3>{},  f(x<4>{},  f(x<5>{},  f(x<6>{},  f(x<7>{},
+        f(x<8>{},  f(x<9>{},  f(x<10>{}, f(x<11>{}, f(x<12>{}, f(x<13>{}, f(x<14>{},
+        f(x<15>{}, f(x<16>{}, f(x<17>{}, f(x<18>{}, f(x<19>{}, f(x<20>{}, f(x<21>{},
+        f(x<22>{}, f(x<23>{}, f(x<24>{}, f(x<25>{}, f(x<26>{}, f(x<27>{},   x<28>{}
+        )))))))))))))))))))))))))))
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldr1(f, x<1>{},  x<2>{},  x<3>{},  x<4>{},  x<5>{},  x<6>{},  x<7>{},
+                  x<8>{},  x<9>{},  x<10>{}, x<11>{}, x<12>{}, x<13>{}, x<14>{},
+                  x<15>{}, x<16>{}, x<17>{}, x<18>{}, x<19>{}, x<20>{}, x<21>{},
+                  x<22>{}, x<23>{}, x<24>{}, x<25>{}, x<26>{}, x<27>{}, x<28>{},
+                  x<29>{}),
+        f(x<1>{},  f(x<2>{},  f(x<3>{},  f(x<4>{},  f(x<5>{},  f(x<6>{},  f(x<7>{},
+        f(x<8>{},  f(x<9>{},  f(x<10>{}, f(x<11>{}, f(x<12>{}, f(x<13>{}, f(x<14>{},
+        f(x<15>{}, f(x<16>{}, f(x<17>{}, f(x<18>{}, f(x<19>{}, f(x<20>{}, f(x<21>{},
+        f(x<22>{}, f(x<23>{}, f(x<24>{}, f(x<25>{}, f(x<26>{}, f(x<27>{}, f(x<28>{},
+          x<29>{}
+        ))))))))))))))))))))))))))))
+    ));
+
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldr1(f, x<1>{},  x<2>{},  x<3>{},  x<4>{},  x<5>{},  x<6>{},  x<7>{},
+                  x<8>{},  x<9>{},  x<10>{}, x<11>{}, x<12>{}, x<13>{}, x<14>{},
+                  x<15>{}, x<16>{}, x<17>{}, x<18>{}, x<19>{}, x<20>{}, x<21>{},
+                  x<22>{}, x<23>{}, x<24>{}, x<25>{}, x<26>{}, x<27>{}, x<28>{},
+                  x<29>{}, x<30>{}, x<31>{}, x<32>{}, x<33>{}, x<34>{}, x<35>{},
+                  x<36>{}, x<37>{}, x<38>{}, x<39>{}, x<40>{}, x<41>{}, x<42>{},
+                  x<43>{}, x<44>{}, x<45>{}, x<46>{}, x<47>{}, x<48>{}, x<49>{},
+                  x<50>{}, x<51>{}, x<52>{}, x<53>{}, x<54>{}, x<55>{}),
+        f(x<1>{},  f(x<2>{},  f(x<3>{},  f(x<4>{},  f(x<5>{},  f(x<6>{},  f(x<7>{},
+        f(x<8>{},  f(x<9>{},  f(x<10>{}, f(x<11>{}, f(x<12>{}, f(x<13>{}, f(x<14>{},
+        f(x<15>{}, f(x<16>{}, f(x<17>{}, f(x<18>{}, f(x<19>{}, f(x<20>{}, f(x<21>{},
+        f(x<22>{}, f(x<23>{}, f(x<24>{}, f(x<25>{}, f(x<26>{}, f(x<27>{}, f(x<28>{},
+        f(x<29>{}, f(x<30>{}, f(x<31>{}, f(x<32>{}, f(x<33>{}, f(x<34>{}, f(x<35>{},
+        f(x<36>{}, f(x<37>{}, f(x<38>{}, f(x<39>{}, f(x<40>{}, f(x<41>{}, f(x<42>{},
+        f(x<43>{}, f(x<44>{}, f(x<45>{}, f(x<46>{}, f(x<47>{}, f(x<48>{}, f(x<49>{},
+        f(x<50>{}, f(x<51>{}, f(x<52>{}, f(x<53>{}, f(x<54>{}, x<55>{}
+        ))))))))))))))))))))))))))))))))))))))))))))))))))))))
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldr1(f, x<1>{},  x<2>{},  x<3>{},  x<4>{},  x<5>{},  x<6>{},  x<7>{},
+                  x<8>{},  x<9>{},  x<10>{}, x<11>{}, x<12>{}, x<13>{}, x<14>{},
+                  x<15>{}, x<16>{}, x<17>{}, x<18>{}, x<19>{}, x<20>{}, x<21>{},
+                  x<22>{}, x<23>{}, x<24>{}, x<25>{}, x<26>{}, x<27>{}, x<28>{},
+                  x<29>{}, x<30>{}, x<31>{}, x<32>{}, x<33>{}, x<34>{}, x<35>{},
+                  x<36>{}, x<37>{}, x<38>{}, x<39>{}, x<40>{}, x<41>{}, x<42>{},
+                  x<43>{}, x<44>{}, x<45>{}, x<46>{}, x<47>{}, x<48>{}, x<49>{},
+                  x<50>{}, x<51>{}, x<52>{}, x<53>{}, x<54>{}, x<55>{}, x<56>{}),
+        f(x<1>{},  f(x<2>{},  f(x<3>{},  f(x<4>{},  f(x<5>{},  f(x<6>{},  f(x<7>{},
+        f(x<8>{},  f(x<9>{},  f(x<10>{}, f(x<11>{}, f(x<12>{}, f(x<13>{}, f(x<14>{},
+        f(x<15>{}, f(x<16>{}, f(x<17>{}, f(x<18>{}, f(x<19>{}, f(x<20>{}, f(x<21>{},
+        f(x<22>{}, f(x<23>{}, f(x<24>{}, f(x<25>{}, f(x<26>{}, f(x<27>{}, f(x<28>{},
+        f(x<29>{}, f(x<30>{}, f(x<31>{}, f(x<32>{}, f(x<33>{}, f(x<34>{}, f(x<35>{},
+        f(x<36>{}, f(x<37>{}, f(x<38>{}, f(x<39>{}, f(x<40>{}, f(x<41>{}, f(x<42>{},
+        f(x<43>{}, f(x<44>{}, f(x<45>{}, f(x<46>{}, f(x<47>{}, f(x<48>{}, f(x<49>{},
+        f(x<50>{}, f(x<51>{}, f(x<52>{}, f(x<53>{}, f(x<54>{}, f(x<55>{},   x<56>{}
+        )))))))))))))))))))))))))))))))))))))))))))))))))))))))
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        foldr1(f, x<1>{},  x<2>{},  x<3>{},  x<4>{},  x<5>{},  x<6>{},  x<7>{},
+                  x<8>{},  x<9>{},  x<10>{}, x<11>{}, x<12>{}, x<13>{}, x<14>{},
+                  x<15>{}, x<16>{}, x<17>{}, x<18>{}, x<19>{}, x<20>{}, x<21>{},
+                  x<22>{}, x<23>{}, x<24>{}, x<25>{}, x<26>{}, x<27>{}, x<28>{},
+                  x<29>{}, x<30>{}, x<31>{}, x<32>{}, x<33>{}, x<34>{}, x<35>{},
+                  x<36>{}, x<37>{}, x<38>{}, x<39>{}, x<40>{}, x<41>{}, x<42>{},
+                  x<43>{}, x<44>{}, x<45>{}, x<46>{}, x<47>{}, x<48>{}, x<49>{},
+                  x<50>{}, x<51>{}, x<52>{}, x<53>{}, x<54>{}, x<55>{}, x<56>{},
+                  x<57>{}),
+        f(x<1>{},  f(x<2>{},  f(x<3>{},  f(x<4>{},  f(x<5>{},  f(x<6>{},  f(x<7>{},
+        f(x<8>{},  f(x<9>{},  f(x<10>{}, f(x<11>{}, f(x<12>{}, f(x<13>{}, f(x<14>{},
+        f(x<15>{}, f(x<16>{}, f(x<17>{}, f(x<18>{}, f(x<19>{}, f(x<20>{}, f(x<21>{},
+        f(x<22>{}, f(x<23>{}, f(x<24>{}, f(x<25>{}, f(x<26>{}, f(x<27>{}, f(x<28>{},
+        f(x<29>{}, f(x<30>{}, f(x<31>{}, f(x<32>{}, f(x<33>{}, f(x<34>{}, f(x<35>{},
+        f(x<36>{}, f(x<37>{}, f(x<38>{}, f(x<39>{}, f(x<40>{}, f(x<41>{}, f(x<42>{},
+        f(x<43>{}, f(x<44>{}, f(x<45>{}, f(x<46>{}, f(x<47>{}, f(x<48>{}, f(x<49>{},
+        f(x<50>{}, f(x<51>{}, f(x<52>{}, f(x<53>{}, f(x<54>{}, f(x<55>{}, f(x<56>{},
+          x<57>{}
+        ))))))))))))))))))))))))))))))))))))))))))))))))))))))))
+    ));
+}
diff --git a/src/boost/libs/hana/test/detail/variadic/reverse_apply.cpp b/src/boost/libs/hana/test/detail/variadic/reverse_apply.cpp
new file mode 100644
index 000000000..60305f3a7
--- /dev/null
+++ b/src/boost/libs/hana/test/detail/variadic/reverse_apply.cpp
@@ -0,0 +1,70 @@
+// Copyright Louis Dionne 2013-2017
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+
+#include <boost/hana/detail/variadic/reverse_apply.hpp>
+#include <boost/hana/detail/variadic/reverse_apply/flat.hpp>
+#include <boost/hana/detail/variadic/reverse_apply/unrolled.hpp>
+
+#include <boost/hana/assert.hpp>
+#include <boost/hana/equal.hpp>
+
+#include <laws/base.hpp>
+namespace hana = boost::hana;
+using hana::test::ct_eq;
+
+
+auto check = [](auto reverse_apply) {
+    hana::test::_injection<0> f{};
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        reverse_apply(f),
+        f()
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        reverse_apply(f, ct_eq<0>{}),
+        f(ct_eq<0>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        reverse_apply(f, ct_eq<0>{}, ct_eq<1>{}),
+        f(ct_eq<1>{}, ct_eq<0>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        reverse_apply(f, ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}),
+        f(ct_eq<2>{}, ct_eq<1>{}, ct_eq<0>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        reverse_apply(f, ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}),
+        f(ct_eq<3>{}, ct_eq<2>{}, ct_eq<1>{}, ct_eq<0>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        reverse_apply(f, ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}),
+        f(ct_eq<4>{}, ct_eq<3>{}, ct_eq<2>{}, ct_eq<1>{}, ct_eq<0>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        reverse_apply(f, ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}),
+        f(ct_eq<5>{}, ct_eq<4>{}, ct_eq<3>{}, ct_eq<2>{}, ct_eq<1>{}, ct_eq<0>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        reverse_apply(f, ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}),
+        f(ct_eq<6>{}, ct_eq<5>{}, ct_eq<4>{}, ct_eq<3>{}, ct_eq<2>{}, ct_eq<1>{}, ct_eq<0>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        reverse_apply(f, ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}),
+        f(ct_eq<7>{}, ct_eq<6>{}, ct_eq<5>{}, ct_eq<4>{}, ct_eq<3>{}, ct_eq<2>{}, ct_eq<1>{}, ct_eq<0>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        reverse_apply(f, ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{}),
+        f(ct_eq<8>{}, ct_eq<7>{}, ct_eq<6>{}, ct_eq<5>{}, ct_eq<4>{}, ct_eq<3>{}, ct_eq<2>{}, ct_eq<1>{}, ct_eq<0>{})
+    ));
+};
+
+int main() {
+    check(hana::detail::variadic::reverse_apply);
+    check([](auto f, auto ...x) {
+        return hana::detail::variadic::reverse_apply_flat(f, x...);
+    });
+    check([](auto f, auto ...x) {
+        return hana::detail::variadic::reverse_apply_unrolled(f, x...);
+    });
+}
diff --git a/src/boost/libs/hana/test/detail/variadic/split_at.cpp b/src/boost/libs/hana/test/detail/variadic/split_at.cpp
new file mode 100644
index 000000000..e33872a5b
--- /dev/null
+++ b/src/boost/libs/hana/test/detail/variadic/split_at.cpp
@@ -0,0 +1,168 @@
+// Copyright Louis Dionne 2013-2017
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+
+#include <boost/hana/detail/variadic/split_at.hpp>
+
+#include <boost/hana/assert.hpp>
+#include <boost/hana/equal.hpp>
+#include <boost/hana/pair.hpp>
+#include <boost/hana/tuple.hpp>
+
+#include <laws/base.hpp>
+namespace hana = boost::hana;
+namespace vd = hana::detail::variadic;
+using hana::test::ct_eq;
+
+
+auto check = [](auto split, auto xs, auto ys) {
+    auto result = split([](auto ...xs) {
+        return [=](auto ...ys) {
+            return hana::make_pair(hana::make_tuple(xs...), hana::make_tuple(ys...));
+        };
+    });
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(xs, hana::first(result)));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(ys, hana::second(result)));
+};
+
+int main() {
+    {
+        check(
+            vd::split_at<0>(),
+            hana::make_tuple(),
+            hana::make_tuple()
+        );
+
+        check(
+            vd::split_at<0>(ct_eq<1>{}),
+            hana::make_tuple(),
+            hana::make_tuple(ct_eq<1>{})
+        );
+
+        check(
+            vd::split_at<0>(ct_eq<1>{}, ct_eq<2>{}),
+            hana::make_tuple(),
+            hana::make_tuple(ct_eq<1>{}, ct_eq<2>{})
+        );
+
+        check(
+            vd::split_at<0>(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}),
+            hana::make_tuple(),
+            hana::make_tuple(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{})
+        );
+    }
+    {
+        check(
+            vd::split_at<1>(ct_eq<1>{}),
+            hana::make_tuple(ct_eq<1>{}),
+            hana::make_tuple()
+        );
+
+        check(
+            vd::split_at<1>(ct_eq<1>{}, ct_eq<2>{}),
+            hana::make_tuple(ct_eq<1>{}),
+            hana::make_tuple(ct_eq<2>{})
+        );
+
+        check(
+            vd::split_at<1>(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}),
+            hana::make_tuple(ct_eq<1>{}),
+            hana::make_tuple(ct_eq<2>{}, ct_eq<3>{})
+        );
+
+        check(
+            vd::split_at<1>(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}),
+            hana::make_tuple(ct_eq<1>{}),
+            hana::make_tuple(ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{})
+        );
+    }
+    {
+        check(
+            vd::split_at<2>(ct_eq<1>{}, ct_eq<2>{}),
+            hana::make_tuple(ct_eq<1>{}, ct_eq<2>{}),
+            hana::make_tuple()
+        );
+
+        check(
+            vd::split_at<2>(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}),
+            hana::make_tuple(ct_eq<1>{}, ct_eq<2>{}),
+            hana::make_tuple(ct_eq<3>{})
+        );
+
+        check(
+            vd::split_at<2>(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}),
+            hana::make_tuple(ct_eq<1>{}, ct_eq<2>{}),
+            hana::make_tuple(ct_eq<3>{}, ct_eq<4>{})
+        );
+
+        check(
+            vd::split_at<2>(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}),
+            hana::make_tuple(ct_eq<1>{}, ct_eq<2>{}),
+            hana::make_tuple(ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{})
+        );
+    }
+    {
+        check(
+            vd::split_at<7>(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}),
+            hana::make_tuple(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}),
+            hana::make_tuple()
+        );
+
+        check(
+            vd::split_at<7>(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{}),
+            hana::make_tuple(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}),
+            hana::make_tuple(ct_eq<8>{})
+        );
+
+        check(
+            vd::split_at<7>(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{}, ct_eq<9>{}),
+            hana::make_tuple(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}),
+            hana::make_tuple(ct_eq<8>{}, ct_eq<9>{})
+        );
+
+        check(
+            vd::split_at<7>(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{}, ct_eq<9>{}, ct_eq<10>{}),
+            hana::make_tuple(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}),
+            hana::make_tuple(ct_eq<8>{}, ct_eq<9>{}, ct_eq<10>{})
+        );
+    }
+    {
+        check(
+            vd::split_at<8>(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{}),
+            hana::make_tuple(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{}),
+            hana::make_tuple()
+        );
+
+        check(
+            vd::split_at<8>(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{}, ct_eq<9>{}),
+            hana::make_tuple(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{}),
+            hana::make_tuple(ct_eq<9>{})
+        );
+
+        check(
+            vd::split_at<8>(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{}, ct_eq<9>{}, ct_eq<10>{}),
+            hana::make_tuple(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{}),
+            hana::make_tuple(ct_eq<9>{}, ct_eq<10>{})
+        );
+    }
+    {
+        check(
+            vd::split_at<9>(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{}, ct_eq<9>{}),
+            hana::make_tuple(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{}, ct_eq<9>{}),
+            hana::make_tuple()
+        );
+
+        check(
+            vd::split_at<9>(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{}, ct_eq<9>{}, ct_eq<10>{}),
+            hana::make_tuple(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{}, ct_eq<9>{}),
+            hana::make_tuple(ct_eq<10>{})
+        );
+
+        check(
+            vd::split_at<9>(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{}, ct_eq<9>{}, ct_eq<10>{}, ct_eq<11>{}),
+            hana::make_tuple(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{}, ct_eq<9>{}),
+            hana::make_tuple(ct_eq<10>{}, ct_eq<11>{})
+        );
+    }
+}
diff --git a/src/boost/libs/hana/test/detail/variadic/take.cpp b/src/boost/libs/hana/test/detail/variadic/take.cpp
new file mode 100644
index 000000000..031c6baea
--- /dev/null
+++ b/src/boost/libs/hana/test/detail/variadic/take.cpp
@@ -0,0 +1,62 @@
+// Copyright Louis Dionne 2013-2017
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+
+#include <boost/hana/detail/variadic/take.hpp>
+
+#include <boost/hana/assert.hpp>
+#include <boost/hana/equal.hpp>
+
+#include <laws/base.hpp>
+namespace hana = boost::hana;
+namespace vd = hana::detail::variadic;
+using hana::test::ct_eq;
+
+
+int main() {
+    hana::test::_injection<0> f{};
+
+    {
+        BOOST_HANA_CONSTANT_CHECK(hana::equal(
+            vd::take<0>()(f),
+            f()
+        ));
+
+        BOOST_HANA_CONSTANT_CHECK(hana::equal(
+            vd::take<0>(ct_eq<1>{})(f),
+            f()
+        ));
+
+        BOOST_HANA_CONSTANT_CHECK(hana::equal(
+            vd::take<0>(ct_eq<1>{}, ct_eq<2>{})(f),
+            f()
+        ));
+    }
+    {
+        BOOST_HANA_CONSTANT_CHECK(hana::equal(
+            vd::take<1>(ct_eq<1>{})(f),
+            f(ct_eq<1>{})
+        ));
+
+        BOOST_HANA_CONSTANT_CHECK(hana::equal(
+            vd::take<1>(ct_eq<1>{}, ct_eq<2>{})(f),
+            f(ct_eq<1>{})
+        ));
+
+        BOOST_HANA_CONSTANT_CHECK(hana::equal(
+            vd::take<1>(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{})(f),
+            f(ct_eq<1>{})
+        ));
+    }
+    {
+        BOOST_HANA_CONSTANT_CHECK(hana::equal(
+            vd::take<8>(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{})(f),
+            f(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{})
+        ));
+
+        BOOST_HANA_CONSTANT_CHECK(hana::equal(
+            vd::take<8>(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{}, ct_eq<9>{})(f),
+            f(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{})
+        ));
+    }
+}