libcxx initial import

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103490 91177308-0d34-0410-b5e6-96231b3b80d8

test/numerics/rand/rand.eng/rand.eng.lcong/eval.pass.cpp

@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// <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 UIntType, UIntType a, UIntType c, UIntType m>
+//   class linear_congruential_engine;
+
+// result_type operator()();
+
+#include <random>
+#include <cassert>
+
+template <class T>
+void
+randu()
+{
+    typedef std::linear_congruential_engine<T, 65539, 0, 2147483648u> E;
+    E e(1);
+    assert(e() == 65539);
+    assert(e() == 393225);
+    assert(e() == 1769499);
+    assert(e() == 7077969);
+    assert(e() == 26542323);
+    assert(e() == 95552217);
+    assert(e() == 334432395);
+    assert(e() == 1146624417);
+    assert(e() == 1722371299);
+    assert(e() == 14608041);
+    assert(e() == 1766175739);
+    assert(e() == 1875647473);
+}
+
+template <class T>
+void
+minstd()
+{
+    typedef std::linear_congruential_engine<T, 16807, 0, 2147483647> E;
+    E e(1);
+    assert(e() == 16807);
+    assert(e() == 282475249);
+    assert(e() == 1622650073);
+    assert(e() == 984943658);
+    assert(e() == 1144108930);
+    assert(e() == 470211272);
+    assert(e() == 101027544);
+    assert(e() == 1457850878);
+    assert(e() == 1458777923);
+    assert(e() == 2007237709);
+    assert(e() == 823564440);
+    assert(e() == 1115438165);
+}
+
+template <class T>
+void
+Haldir()
+{
+    typedef std::linear_congruential_engine<T, 16807, 78125, 2147483647> E;
+    E e(207560540);
+    assert(e() == 956631177);
+    assert(e() == 2037688522);
+    assert(e() == 1509348670);
+    assert(e() == 1546336451);
+    assert(e() == 429714088);
+    assert(e() == 217250280);
+}
+
+int main()
+{
+    randu<unsigned int>();
+    randu<unsigned long>();
+    randu<unsigned long long>();
+
+    minstd<unsigned int>();
+    minstd<unsigned long>();
+    minstd<unsigned long long>();
+
+    Haldir<unsigned int>();
+    Haldir<unsigned long>();
+    Haldir<unsigned long long>();
+}