--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ossrv_pub/boost_apis/boost/random/triangle_distribution.hpp	Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,101 @@
+/* boost random/triangle_distribution.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: triangle_distribution.hpp,v 1.11 2004/07/27 03:43:32 dgregor Exp $
+ *
+ * Revision history
+ *  2001-02-18  moved to individual header files
+ */
+
+#ifndef BOOST_RANDOM_TRIANGLE_DISTRIBUTION_HPP
+#define BOOST_RANDOM_TRIANGLE_DISTRIBUTION_HPP
+
+#include <cmath>
+#include <cassert>
+#include <boost/random/uniform_01.hpp>
+
+namespace boost {
+
+// triangle distribution, with a smallest, b most probable, and c largest
+// value.
+template<class RealType = double>
+class triangle_distribution
+{
+public:
+  typedef RealType input_type;
+  typedef RealType result_type;
+
+  explicit triangle_distribution(result_type a = result_type(0),
+                                 result_type b = result_type(0.5),
+                                 result_type c = result_type(1))
+    : _a(a), _b(b), _c(c)
+  {
+    assert(_a <= _b && _b <= _c);
+    init();
+  }
+
+  // compiler-generated copy ctor and assignment operator are fine
+  result_type a() const { return _a; }
+  result_type b() const { return _b; }
+  result_type c() const { return _c; }
+
+  void reset() { }
+
+  template<class Engine>
+  result_type operator()(Engine& eng)
+  {
+#ifndef BOOST_NO_STDC_NAMESPACE
+    using std::sqrt;
+#endif
+    result_type u = eng();
+    if( u <= q1 )
+      return _a + p1*sqrt(u);
+    else
+      return _c - d3*sqrt(d2*u-d1);
+  }
+
+#if !defined(BOOST_NO_OPERATORS_IN_NAMESPACE) && !defined(BOOST_NO_MEMBER_TEMPLATE_FRIENDS)
+  template<class CharT, class Traits>
+  friend std::basic_ostream<CharT,Traits>&
+  operator<<(std::basic_ostream<CharT,Traits>& os, const triangle_distribution& td)
+  {
+    os << td._a << " " << td._b << " " << td._c;
+    return os;
+  }
+
+  template<class CharT, class Traits>
+  friend std::basic_istream<CharT,Traits>&
+  operator>>(std::basic_istream<CharT,Traits>& is, triangle_distribution& td)
+  {
+    is >> std::ws >> td._a >> std::ws >> td._b >> std::ws >> td._c;
+    td.init();
+    return is;
+  }
+#endif
+
+private:
+  void init()
+  {
+#ifndef BOOST_NO_STDC_NAMESPACE
+    using std::sqrt;
+#endif
+    d1 = _b - _a;
+    d2 = _c - _a;
+    d3 = sqrt(_c - _b);
+    q1 = d1 / d2;
+    p1 = sqrt(d1 * d2);
+  }
+
+  result_type _a, _b, _c;
+  result_type d1, d2, d3, q1, p1;
+};
+
+} // namespace boost
+
+#endif // BOOST_RANDOM_TRIANGLE_DISTRIBUTION_HPP