1 files changed, 42 insertions, 0 deletions
diff --git a/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/default.pass.cpp b/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/default.pass.cpp
new file mode 100644
index 00000000000..56e8759d1e6
--- /dev/null
+++ b/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/default.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class UIntType, size_t w, size_t s, size_t r>
+// class subtract_with_carry_engine;
+
+// explicit subtract_with_carry_engine();
+
+#include <random>
+#include <cassert>
+
+void
+test1()
+{
+    std::ranlux24_base e1;
+    std::ranlux24_base e2(std::ranlux24_base::default_seed);
+    assert(e1 == e2);
+    assert(e1() == 15039276);
+}
+
+void
+test2()
+{
+    std::ranlux48_base e1;
+    std::ranlux48_base e2(std::ranlux48_base::default_seed);
+    assert(e1 == e2);
+    assert(e1() == 23459059301164ull);
+}
+
+int main()
+{
+    test1();
+    test2();
+}