Squashed 'third_party/boostorg/odeint/' content from commit 6ff2719
Change-Id: If4892e29c1a5e6cf3a7aa51486a2725c251b0c7d
git-subtree-dir: third_party/boostorg/odeint
git-subtree-split: 6ff2719b6907b86596c3d43e88c1bcfdf29df560
diff --git a/performance/lorenz.hpp b/performance/lorenz.hpp
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+++ b/performance/lorenz.hpp
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+/*
+ * lorenz.hpp
+ *
+ * Copyright 2011 Mario Mulansky
+ * Copyright 2012 Karsten Ahnert
+ *
+ * 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)
+ */
+
+
+#ifndef LORENZ_HPP_
+#define LORENZ_HPP_
+
+#include <boost/array.hpp>
+
+struct lorenz
+{
+ template< class state_type >
+ void inline operator()( const state_type &x , state_type &dxdt , const double t ) const
+ {
+ const double sigma = 10.0;
+ const double R = 28.0;
+ const double b = 8.0 / 3.0;
+ dxdt[0] = sigma * ( x[1] - x[0] );
+ dxdt[1] = R * x[0] - x[1] - x[0] * x[2];
+ dxdt[2] = x[0]*x[1] - b * x[2];
+ }
+};
+
+
+#endif /* LORENZ_HPP_ */