--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ossrv_pub/boost_apis/boost/random/discard_block.hpp	Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,121 @@
+/* boost random/discard_block.hpp header file
+ *
+ * Copyright Jens Maurer 2002
+ * 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: discard_block.hpp,v 1.12 2005/05/21 15:57:00 dgregor Exp $
+ *
+ * Revision history
+ *  2001-03-02  created
+ */
+
+#ifndef BOOST_RANDOM_DISCARD_BLOCK_HPP
+#define BOOST_RANDOM_DISCARD_BLOCK_HPP
+
+#include <iostream>
+#include <boost/config.hpp>
+#include <boost/limits.hpp>
+#include <boost/static_assert.hpp>
+
+
+namespace boost {
+namespace random {
+
+template<class UniformRandomNumberGenerator, unsigned int p, unsigned int r>
+class discard_block
+{
+public:
+  typedef UniformRandomNumberGenerator base_type;
+  typedef typename base_type::result_type result_type;
+
+  BOOST_STATIC_CONSTANT(bool, has_fixed_range = false);
+  BOOST_STATIC_CONSTANT(unsigned int, total_block = p);
+  BOOST_STATIC_CONSTANT(unsigned int, returned_block = r);
+
+#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
+  BOOST_STATIC_ASSERT(total_block >= returned_block);
+#endif
+
+  discard_block() : _rng(), _n(0) { }
+  explicit discard_block(const base_type & rng) : _rng(rng), _n(0) { }
+  template<class It> discard_block(It& first, It last)
+    : _rng(first, last), _n(0) { }
+  void seed() { _rng.seed(); _n = 0; }
+  template<class T> void seed(T s) { _rng.seed(s); _n = 0; }
+  template<class It> void seed(It& first, It last)
+  { _n = 0; _rng.seed(first, last); }
+
+  const base_type& base() const { return _rng; }
+
+  result_type operator()()
+  {
+    if(_n >= returned_block) {
+      // discard values of random number generator
+      for( ; _n < total_block; ++_n)
+        _rng();
+      _n = 0;
+    }
+    ++_n;
+    return _rng();
+  }
+
+  result_type min BOOST_PREVENT_MACRO_SUBSTITUTION () const { return (_rng.min)(); }
+  result_type max BOOST_PREVENT_MACRO_SUBSTITUTION () const { return (_rng.max)(); }
+  static bool validation(result_type x) { return true; }  // dummy
+
+#ifndef BOOST_NO_OPERATORS_IN_NAMESPACE
+
+#ifndef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
+  template<class CharT, class Traits>
+  friend std::basic_ostream<CharT,Traits>&
+  operator<<(std::basic_ostream<CharT,Traits>& os, const discard_block& s)
+  {
+    os << s._rng << " " << s._n << " ";
+    return os;
+  }
+
+  template<class CharT, class Traits>
+  friend std::basic_istream<CharT,Traits>&
+  operator>>(std::basic_istream<CharT,Traits>& is, discard_block& s)
+  {
+    is >> s._rng >> std::ws >> s._n >> std::ws;
+    return is;
+  }
+#endif
+
+  friend bool operator==(const discard_block& x, const discard_block& y)
+  { return x._rng == y._rng && x._n == y._n; }
+  friend bool operator!=(const discard_block& x, const discard_block& y)
+  { return !(x == y); }
+#else
+  // Use a member function; Streamable concept not supported.
+  bool operator==(const discard_block& rhs) const
+  { return _rng == rhs._rng && _n == rhs._n; }
+  bool operator!=(const discard_block& rhs) const
+  { return !(*this == rhs); }
+#endif
+
+private:
+  base_type _rng;
+  unsigned int _n;
+};
+
+#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
+//  A definition is required even for integral static constants
+template<class UniformRandomNumberGenerator, unsigned int p, unsigned int r>
+const bool discard_block<UniformRandomNumberGenerator, p, r>::has_fixed_range;
+template<class UniformRandomNumberGenerator, unsigned int p, unsigned int r>
+const unsigned int discard_block<UniformRandomNumberGenerator, p, r>::total_block;
+template<class UniformRandomNumberGenerator, unsigned int p, unsigned int r>
+const unsigned int discard_block<UniformRandomNumberGenerator, p, r>::returned_block;
+#endif
+
+} // namespace random
+
+} // namespace boost
+
+#endif // BOOST_RANDOM_DISCARD_BLOCK_HPP