1 files changed, 127 insertions, 0 deletions
diff --git a/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/cshift.pass.cpp b/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/cshift.pass.cpp
new file mode 100644
index 00000000000..601a6df8d5e
--- /dev/null
+++ b/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/cshift.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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 cshift(int i) const;
+
+#include <valarray>
+#include <cassert>
+
+int main()
+{
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.cshift(0);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {4, 5, 6, 7, 8, 9, 10, 1, 2, 3};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.cshift(3);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.cshift(10);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {8, 9, 10, 1, 2, 3, 4, 5, 6, 7};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.cshift(17);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {8, 9, 10, 1, 2, 3, 4, 5, 6, 7};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.cshift(-3);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.cshift(-10);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {4, 5, 6, 7, 8, 9, 10, 1, 2, 3};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.cshift(-17);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        const unsigned N1 = 0;
+        std::valarray<T> v1;
+        std::valarray<T> v2 = v1.cshift(-17);
+        assert(v2.size() == N1);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {8, 10, 12, 14, 16, 18, 20, 2, 4, 6};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = (v1 + v1).cshift(3);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {16, 18, 20, 2, 4, 6, 8, 10, 12, 14};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = (v1 + v1).cshift(-3);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+}