Move test into test/std subdirectory.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@224658 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/numerics/rand/rand.eng/rand.eng.sub/discard.pass.cpp

@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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;
+
+// void discard(unsigned long long z);
+
+#include <random>
+#include <cassert>
+
+void
+test1()
+{
+    std::ranlux24_base e1;
+    std::ranlux24_base e2 = e1;
+    assert(e1 == e2);
+    e1.discard(3);
+    assert(e1 != e2);
+    e2();
+    e2();
+    e2();
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    std::ranlux48_base e1;
+    std::ranlux48_base e2 = e1;
+    assert(e1 == e2);
+    e1.discard(3);
+    assert(e1 != e2);
+    e2();
+    e2();
+    e2();
+    assert(e1 == e2);
+}
+
+int main()
+{
+    test1();
+    test2();
+}