1 files changed, 51 insertions, 0 deletions
diff --git a/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/apply_cref.pass.cpp b/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/apply_cref.pass.cpp
new file mode 100644
index 00000000000..919a3a5e499
--- /dev/null
+++ b/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/apply_cref.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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 apply(value_type f(const value_type&)) const;
+
+#include <valarray>
+#include <cassert>
+
+typedef int T;
+
+T f(const T& t) {return t + 5;}
+
+int main()
+{
+    {
+        T a1[] = {1, 2, 3, 4,  5,  6,  7,  8,  9, 10};
+        T a2[] = {6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.apply(f);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        const unsigned N1 = 0;
+        std::valarray<T> v1;
+        std::valarray<T> v2 = v1.apply(f);
+        assert(v2.size() == N1);
+    }
+    {
+        T a1[] = {1, 2, 3, 4,  5,  6,  7,  8,  9, 10};
+        T a2[] = {7, 9, 11, 13, 15, 17, 19, 21, 23, 25};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = (v1+v1).apply(f);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+}