[rand.dist.norm.t]

llvm-svn: 104052

18 files changed, 797 insertions, 0 deletions

diff --git a/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/assign.pass.cpp b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/assign.pass.cpp
new file mode 100644
index 00000000000..5fcd0c90b8a
--- /dev/null
+++ b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/assign.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// student_t_distribution& operator=(const student_t_distribution&);
+
+#include <random>
+#include <cassert>
+
+void
+test1()
+{
+    typedef std::student_t_distribution<> D;
+    D d1(20.75);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main()
+{
+    test1();
+}
diff --git a/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/copy.pass.cpp b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/copy.pass.cpp
new file mode 100644
index 00000000000..251ebd95b48
--- /dev/null
+++ b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/copy.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// student_t_distribution(const student_t_distribution&);
+
+#include <random>
+#include <cassert>
+
+void
+test1()
+{
+    typedef std::student_t_distribution<> D;
+    D d1(21.75);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main()
+{
+    test1();
+}
diff --git a/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/ctor_double.pass.cpp b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/ctor_double.pass.cpp
new file mode 100644
index 00000000000..e032d41ff97
--- /dev/null
+++ b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/ctor_double.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// explicit student_t_distribution(result_type alpha = 0, result_type beta = 1);
+
+#include <random>
+#include <cassert>
+
+int main()
+{
+    {
+        typedef std::student_t_distribution<> D;
+        D d;
+        assert(d.n() == 1);
+    }
+    {
+        typedef std::student_t_distribution<> D;
+        D d(14.5);
+        assert(d.n() == 14.5);
+    }
+}
diff --git a/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/ctor_param.pass.cpp b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/ctor_param.pass.cpp
new file mode 100644
index 00000000000..f8555e87bc6
--- /dev/null
+++ b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/ctor_param.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// explicit student_t_distribution(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+int main()
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25);
+        D d(p);
+        assert(d.n() == 0.25);
+    }
+}
diff --git a/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/eq.pass.cpp b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/eq.pass.cpp
new file mode 100644
index 00000000000..088f1b10194
--- /dev/null
+++ b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/eq.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// bool operator=(const student_t_distribution& x,
+//                const student_t_distribution& y);
+// bool operator!(const student_t_distribution& x,
+//                const student_t_distribution& y);
+
+#include <random>
+#include <cassert>
+
+int main()
+{
+    {
+        typedef std::student_t_distribution<> D;
+        D d1(2.5);
+        D d2(2.5);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::student_t_distribution<> D;
+        D d1(4);
+        D d2(4.5);
+        assert(d1 != d2);
+    }
+}
diff --git a/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/eval.pass.cpp b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/eval.pass.cpp
new file mode 100644
index 00000000000..86ffd793384
--- /dev/null
+++ b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/eval.pass.cpp
@@ -0,0 +1,140 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main()
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type P;
+        typedef std::minstd_rand G;
+        G g;
+        D d(5.5);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g));
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (int i = 0; i < u.size(); ++i)
+        {
+            double d = (u[i] - mean);
+            double d2 = sqr(d);
+            var += d2;
+            skew += d * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = 0;
+        double x_var = d.n() / (d.n() - 2);
+        double x_skew = 0;
+        double x_kurtosis = 6 / (d.n() - 4);
+        assert(std::abs(mean - x_mean) < 0.01);
+        assert(std::abs(var - x_var) / x_var < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs(kurtosis - x_kurtosis) / x_kurtosis < 0.2);
+    }
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type P;
+        typedef std::minstd_rand G;
+        G g;
+        D d(10);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g));
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (int i = 0; i < u.size(); ++i)
+        {
+            double d = (u[i] - mean);
+            double d2 = sqr(d);
+            var += d2;
+            skew += d * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = 0;
+        double x_var = d.n() / (d.n() - 2);
+        double x_skew = 0;
+        double x_kurtosis = 6 / (d.n() - 4);
+        assert(std::abs(mean - x_mean) < 0.01);
+        assert(std::abs(var - x_var) / x_var < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs(kurtosis - x_kurtosis) / x_kurtosis < 0.04);
+    }
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type P;
+        typedef std::minstd_rand G;
+        G g;
+        D d(100);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g));
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (int i = 0; i < u.size(); ++i)
+        {
+            double d = (u[i] - mean);
+            double d2 = sqr(d);
+            var += d2;
+            skew += d * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = 0;
+        double x_var = d.n() / (d.n() - 2);
+        double x_skew = 0;
+        double x_kurtosis = 6 / (d.n() - 4);
+        assert(std::abs(mean - x_mean) < 0.01);
+        assert(std::abs(var - x_var) / x_var < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs(kurtosis - x_kurtosis) / x_kurtosis < 0.02);
+    }
+}
diff --git a/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/eval_param.pass.cpp b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/eval_param.pass.cpp
new file mode 100644
index 00000000000..18207701a3a
--- /dev/null
+++ b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/eval_param.pass.cpp
@@ -0,0 +1,143 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main()
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type P;
+        typedef std::minstd_rand G;
+        G g;
+        D d;
+        P p(5.5);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g, p));
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (int i = 0; i < u.size(); ++i)
+        {
+            double d = (u[i] - mean);
+            double d2 = sqr(d);
+            var += d2;
+            skew += d * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = 0;
+        double x_var = p.n() / (p.n() - 2);
+        double x_skew = 0;
+        double x_kurtosis = 6 / (p.n() - 4);
+        assert(std::abs(mean - x_mean) < 0.01);
+        assert(std::abs(var - x_var) / x_var < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs(kurtosis - x_kurtosis) / x_kurtosis < 0.2);
+    }
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type P;
+        typedef std::minstd_rand G;
+        G g;
+        D d;
+        P p(10);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g, p));
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (int i = 0; i < u.size(); ++i)
+        {
+            double d = (u[i] - mean);
+            double d2 = sqr(d);
+            var += d2;
+            skew += d * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = 0;
+        double x_var = p.n() / (p.n() - 2);
+        double x_skew = 0;
+        double x_kurtosis = 6 / (p.n() - 4);
+        assert(std::abs(mean - x_mean) < 0.01);
+        assert(std::abs(var - x_var) / x_var < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs(kurtosis - x_kurtosis) / x_kurtosis < 0.04);
+    }
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type P;
+        typedef std::minstd_rand G;
+        G g;
+        D d;
+        P p(100);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g, p));
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (int i = 0; i < u.size(); ++i)
+        {
+            double d = (u[i] - mean);
+            double d2 = sqr(d);
+            var += d2;
+            skew += d * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = 0;
+        double x_var = p.n() / (p.n() - 2);
+        double x_skew = 0;
+        double x_kurtosis = 6 / (p.n() - 4);
+        assert(std::abs(mean - x_mean) < 0.01);
+        assert(std::abs(var - x_var) / x_var < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs(kurtosis - x_kurtosis) / x_kurtosis < 0.02);
+    }
+}
diff --git a/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/get_param.pass.cpp b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/get_param.pass.cpp
new file mode 100644
index 00000000000..5574c01e32c
--- /dev/null
+++ b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/get_param.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+int main()
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type P;
+        P p(.125);
+        D d(p);
+        assert(d.param() == p);
+    }
+}
diff --git a/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/io.pass.cpp b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/io.pass.cpp
new file mode 100644
index 00000000000..f2e0a3cb14b
--- /dev/null
+++ b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/io.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// template <class CharT, class Traits, class RealType>
+// basic_ostream<CharT, Traits>&
+// operator<<(basic_ostream<CharT, Traits>& os,
+//            const student_t_distribution<RealType>& x);
+
+// template <class CharT, class Traits, class RealType>
+// basic_istream<CharT, Traits>&
+// operator>>(basic_istream<CharT, Traits>& is,
+//            student_t_distribution<RealType>& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+int main()
+{
+    {
+        typedef std::student_t_distribution<> D;
+        D d1(7);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+}
diff --git a/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/max.pass.cpp b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/max.pass.cpp
new file mode 100644
index 00000000000..1ada3be64e9
--- /dev/null
+++ b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/max.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// result_type max() const;
+
+#include <random>
+#include <cassert>
+
+int main()
+{
+    {
+        typedef std::student_t_distribution<> D;
+        D d(5);
+        D::result_type m = d.max();
+        assert(m == INFINITY);
+    }
+}
diff --git a/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/min.pass.cpp b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/min.pass.cpp
new file mode 100644
index 00000000000..c9317c2f023
--- /dev/null
+++ b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/min.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// result_type min() const;
+
+#include <random>
+#include <cassert>
+
+int main()
+{
+    {
+        typedef std::student_t_distribution<> D;
+        D d(.5);
+        assert(d.min() == -INFINITY);
+    }
+}
diff --git a/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/param_assign.pass.cpp b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/param_assign.pass.cpp
new file mode 100644
index 00000000000..8ee88c7694e
--- /dev/null
+++ b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/param_assign.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+int main()
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(.75);
+        param_type p;
+        p = p0;
+        assert(p.n() == .75);
+    }
+}
diff --git a/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/param_copy.pass.cpp b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/param_copy.pass.cpp
new file mode 100644
index 00000000000..341c43f5b75
--- /dev/null
+++ b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/param_copy.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+int main()
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(10);
+        param_type p = p0;
+        assert(p.n() == 10);
+    }
+}
diff --git a/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/param_ctor.pass.cpp b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/param_ctor.pass.cpp
new file mode 100644
index 00000000000..3a334dc1129
--- /dev/null
+++ b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/param_ctor.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+int main()
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p;
+        assert(p.n() == 1);
+    }
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10);
+        assert(p.n() == 10);
+    }
+}
diff --git a/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/param_eq.pass.cpp b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/param_eq.pass.cpp
new file mode 100644
index 00000000000..2bee65e68a9
--- /dev/null
+++ b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/param_eq.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+int main()
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75);
+        param_type p2(0.75);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75);
+        param_type p2(0.5);
+        assert(p1 != p2);
+    }
+}
diff --git a/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/param_types.pass.cpp b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/param_types.pass.cpp
new file mode 100644
index 00000000000..1ccad536f15
--- /dev/null
+++ b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/param_types.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+int main()
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+}
diff --git a/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/set_param.pass.cpp b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/set_param.pass.cpp
new file mode 100644
index 00000000000..be305851fe7
--- /dev/null
+++ b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/set_param.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution;
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+int main()
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25);
+        D d(0.75);
+        d.param(p);
+        assert(d.param() == p);
+    }
+}
diff --git a/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/types.pass.cpp b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/types.pass.cpp
new file mode 100644
index 00000000000..fb569dec95b
--- /dev/null
+++ b/libcxx/test/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/types.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+// {
+// public:
+//     // types
+//     typedef RealType result_type;
+
+#include <random>
+#include <type_traits>
+
+int main()
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, double>::value), "");
+    }
+    {
+        typedef std::student_t_distribution<float> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, float>::value), "");
+    }
+}