1 files changed, 76 insertions, 0 deletions
diff --git a/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_add.pass.cpp b/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_add.pass.cpp
new file mode 100644
index 00000000000..a537f0215ca
--- /dev/null
+++ b/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_add.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio_add
+
+#include <ratio>
+
+int main()
+{
+    {
+    typedef std::ratio<1, 1> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == 2 && R::den == 1, "");
+    }
+    {
+    typedef std::ratio<1, 2> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == 3 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<-1, 2> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == 1 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<1, -2> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == 1 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<1, 2> R1;
+    typedef std::ratio<-1, 1> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == -1 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<1, 2> R1;
+    typedef std::ratio<1, -1> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == -1 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<56987354, 467584654> R1;
+    typedef std::ratio<544668, 22145> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == 127970191639601LL && R::den == 5177331081415LL, "");
+    }
+    {
+    typedef std::ratio<0> R1;
+    typedef std::ratio<0> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == 0 && R::den == 1, "");
+    }
+    {
+    typedef std::ratio<1> R1;
+    typedef std::ratio<0> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == 1 && R::den == 1, "");
+    }
+    {
+    typedef std::ratio<0> R1;
+    typedef std::ratio<1> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == 1 && R::den == 1, "");
+    }
+}