1 files changed, 37 insertions, 0 deletions
diff --git a/libcxx/test/std/utilities/function.objects/arithmetic.operations/minus.pass.cpp b/libcxx/test/std/utilities/function.objects/arithmetic.operations/minus.pass.cpp
new file mode 100644
index 00000000000..9a496a8066c
--- /dev/null
+++ b/libcxx/test/std/utilities/function.objects/arithmetic.operations/minus.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// minus
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+int main()
+{
+    typedef std::minus<int> F;
+    const F f = F();
+    static_assert((std::is_base_of<std::binary_function<int, int, int>, F>::value), "");
+    assert(f(3, 2) == 1);
+#if _LIBCPP_STD_VER > 11
+    typedef std::minus<> F2;
+    const F2 f2 = F2();
+    assert(f2(3,2) == 1);
+    assert(f2(3.0, 2) == 1);
+    assert(f2(3, 2.5) == 0.5);
+
+    constexpr int foo = std::minus<int> () (3, 2);
+    static_assert ( foo == 1, "" );
+
+    constexpr int bar = std::minus<> () (3.0, 2);
+    static_assert ( bar == 1, "" );
+#endif
+}