Adding boost random support and system libs

Boost/boost/random/random_number_generator.hpp

@@ -0,0 +1,71 @@
+/* boost random/random_number_generator.hpp header file
+ *
+ * Copyright Jens Maurer 2000-2001
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ *
+ * See http://www.boost.org for most recent version including documentation.
+ *
+ * $Id: random_number_generator.hpp 60755 2010-03-22 00:45:06Z steven_watanabe $
+ *
+ * Revision history
+ *  2001-02-18  moved to individual header files
+ */
+
+#ifndef BOOST_RANDOM_RANDOM_NUMBER_GENERATOR_HPP
+#define BOOST_RANDOM_RANDOM_NUMBER_GENERATOR_HPP
+
+#include <boost/config.hpp>
+#include <boost/limits.hpp>
+#include <boost/static_assert.hpp>
+#include <boost/random/uniform_int.hpp>
+#include <boost/random/variate_generator.hpp>
+
+namespace boost {
+
+/**
+ * Instantiations of class template random_number_generator model a
+ * RandomNumberGenerator (std:25.2.11 [lib.alg.random.shuffle]). On
+ * each invocation, it returns a uniformly distributed integer in
+ * the range [0..n).
+ *
+ * The template parameter IntType shall denote some integer-like value type.
+ */
+template<class UniformRandomNumberGenerator, class IntType = long>
+class random_number_generator
+{
+public:
+  typedef UniformRandomNumberGenerator base_type;
+  typedef IntType argument_type;
+  typedef IntType result_type;
+  /**
+   * Constructs a random_number_generator functor with the given
+   * \uniform_random_number_generator as the underlying source of
+   * random numbers.
+   */
+  random_number_generator(base_type& rng) : _rng(rng)
+  { 
+#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
+    BOOST_STATIC_ASSERT(std::numeric_limits<result_type>::is_integer);
+#endif
+  }
+  // compiler-generated copy ctor is fine
+  // assignment is disallowed because there is a reference member
+
+  /**
+   * Returns a value in the range [0, n)
+   */
+  result_type operator()(argument_type n)
+  {
+    typedef uniform_int<IntType> dist_type;
+    return variate_generator<base_type&, dist_type>(_rng, dist_type(0, n-1))();
+  }
+
+private:
+  base_type& _rng;
+};
+
+} // namespace boost
+
+#endif // BOOST_RANDOM_RANDOM_NUMBER_GENERATOR_HPP