Added boost header

test/external/boost/random/variate_generator.hpp

@@ -0,0 +1,122 @@
+/* boost random/variate_generator.hpp header file
+ *
+ * Copyright Jens Maurer 2002
+ * Copyright Steven Watanabe 2011
+ * 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: variate_generator.hpp 71018 2011-04-05 21:27:52Z steven_watanabe $
+ *
+ */
+
+#ifndef BOOST_RANDOM_RANDOM_GENERATOR_HPP
+#define BOOST_RANDOM_RANDOM_GENERATOR_HPP
+
+#include <boost/random/detail/ptr_helper.hpp>
+
+#include <boost/random/detail/disable_warnings.hpp>
+
+namespace boost {
+
+/// \cond hide_private_members
+
+namespace random {
+
+///\endcond
+
+/**
+ * A random variate generator is used to join a random number
+ * generator together with a random number distribution.
+ * Boost.Random provides a vast choice of \generators as well
+ * as \distributions.
+ *
+ * The argument for the template parameter Engine shall be of
+ * the form U, U&, or U*, where U models a
+ * \uniform_random_number_generator.  Then, the member
+ * engine_value_type names U (not the pointer or reference to U).
+ *
+ * Specializations of @c variate_generator satisfy the
+ * requirements of CopyConstructible. They also satisfy the
+ * requirements of Assignable unless the template parameter
+ * Engine is of the form U&.
+ *
+ * The complexity of all functions specified in this section
+ * is constant. No function described in this section except
+ * the constructor throws an exception.
+ */
+template<class Engine, class Distribution>
+class variate_generator
+{
+private:
+    typedef boost::random::detail::ptr_helper<Engine> helper_type;
+public:
+    typedef typename helper_type::value_type engine_value_type;
+    typedef Engine engine_type;
+    typedef Distribution distribution_type;
+    typedef typename Distribution::result_type result_type;
+
+    /**
+     * Constructs a @c variate_generator object with the associated
+     * \uniform_random_number_generator eng and the associated
+     * \random_distribution d.
+     *
+     * Throws: If and what the copy constructor of Engine or
+     * Distribution throws.
+     */
+    variate_generator(Engine e, Distribution d)
+      : _eng(e), _dist(d) { }
+
+    /** Returns: distribution()(engine()) */
+    result_type operator()() { return _dist(engine()); }
+    /**
+     * Returns: distribution()(engine(), value).
+     */
+    template<class T>
+    result_type operator()(const T& value) { return _dist(engine(), value); }
+
+    /**
+     * Returns: A reference to the associated uniform random number generator.
+     */
+    engine_value_type& engine() { return helper_type::ref(_eng); }
+    /**
+     * Returns: A reference to the associated uniform random number generator.
+     */
+    const engine_value_type& engine() const { return helper_type::ref(_eng); }
+
+    /** Returns: A reference to the associated \random_distribution. */
+    distribution_type& distribution() { return _dist; }
+    /**
+     * Returns: A reference to the associated random distribution.
+     */
+    const distribution_type& distribution() const { return _dist; }
+
+    /**
+     * Precondition: distribution().min() is well-formed
+     *
+     * Returns: distribution().min()
+     */
+    result_type min BOOST_PREVENT_MACRO_SUBSTITUTION () const { return (distribution().min)(); }
+    /**
+     * Precondition: distribution().max() is well-formed
+     *
+     * Returns: distribution().max()
+     */
+    result_type max BOOST_PREVENT_MACRO_SUBSTITUTION () const { return (distribution().max)(); }
+
+private:
+    Engine _eng;
+    distribution_type _dist;
+};
+
+} // namespace random
+
+using random::variate_generator;
+
+} // namespace boost
+
+#include <boost/random/detail/enable_warnings.hpp>
+
+#endif // BOOST_RANDOM_RANDOM_GENERATOR_HPP