libcxx initial import

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103490 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-11 19:42:16 +00:00
commit bc8d3f97eb
3893 changed files with 1209942 additions and 0 deletions
--- a/test/numerics/rand/rand.adapt/rand.adapt.shuf/eval.pass.cpp
+++ b/test/numerics/rand/rand.adapt/rand.adapt.shuf/eval.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t k>
+// class shuffle_order_engine
+
+// result_type operator()();
+
+#include <random>
+#include <cassert>
+
+template <class UIntType, UIntType Min, UIntType Max>
+class rand1
+{
+public:
+    // types
+    typedef UIntType result_type;
+
+private:
+    result_type x_;
+
+    static_assert(Min < Max, "rand1 invalid parameters");
+public:
+
+    // Temporary work around for lack of constexpr
+    static const result_type _Min = Min;
+    static const result_type _Max = Max;
+
+    static const/*expr*/ result_type min() {return Min;}
+    static const/*expr*/ result_type max() {return Max;}
+
+    explicit rand1(result_type sd = Min) : x_(sd)
+    {
+        if (x_ < Min)
+            x_ = Min;
+        if (x_ > Max)
+            x_ = Max;
+    }
+
+    result_type operator()()
+    {
+        result_type r = x_;
+        if (x_ < Max)
+            ++x_;
+        else
+            x_ = Min;
+        return r;
+    }
+};
+
+void
+test1()
+{
+   typedef std::knuth_b E;
+
+    E e;
+    assert(e() == 152607844u);
+}
+
+void
+test2()
+{
+    typedef rand1<unsigned long long, 0, 0xFFFFFFFFFFFFFFFFull> E0;
+    typedef std::shuffle_order_engine<E0, 101> E;
+    E e;
+    e.discard(400);
+    assert(e() == 501);
+}
+
+void
+test3()
+{
+    typedef rand1<unsigned long long, 0, 0xFFFFFFFFFFFFFFFFull> E0;
+    typedef std::shuffle_order_engine<E0, 100> E;
+    E e;
+    e.discard(400);
+    assert(e() == 500);
+}
+
+int main()
+{
+    test1();
+    test2();
+    test3();
+}