1 files changed, 65 insertions, 0 deletions
diff --git a/libcxx/test/std/numerics/numarray/template.valarray/valarray.unary/negate.pass.cpp b/libcxx/test/std/numerics/numarray/template.valarray/valarray.unary/negate.pass.cpp
new file mode 100644
index 00000000000..25674bb44d9
--- /dev/null
+++ b/libcxx/test/std/numerics/numarray/template.valarray/valarray.unary/negate.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray operator-() const;
+
+#include <valarray>
+#include <cassert>
+
+int main()
+{
+    {
+        typedef int T;
+        T a[] = {1, 2, 3, 4, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = -v;
+        assert(v2.size() == v.size());
+        for (int i = 0; i < v2.size(); ++i)
+            assert(v2[i] == -v[i]);
+    }
+    {
+        typedef double T;
+        T a[] = {1, 2.5, 3, 4.25, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = -v;
+        assert(v2.size() == v.size());
+        for (int i = 0; i < v2.size(); ++i)
+            assert(v2[i] == -v[i]);
+    }
+    {
+        typedef std::valarray<double> T;
+        T a[] = {T(1), T(2), T(3), T(4), T(5)};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = -v;
+        assert(v2.size() == v.size());
+        for (int i = 0; i < N; ++i)
+        {
+            assert(v2[i].size() == v[i].size());
+            for (int j = 0; j < v[i].size(); ++j)
+                assert(v2[i][j] == -v[i][j]);
+        }
+    }
+    {
+        typedef double T;
+        T a[] = {1, 2.5, 3, 4.25, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = -(v + v);
+        assert(v2.size() == v.size());
+        for (int i = 0; i < v2.size(); ++i)
+            assert(v2[i] == -2*v[i]);
+    }
+}