1 files changed, 75 insertions, 0 deletions
diff --git a/chaos/src/bernoulli_map.hpp b/chaos/src/bernoulli_map.hpp
new file mode 100644
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+++ b/chaos/src/bernoulli_map.hpp
@@ -0,0 +1,75 @@
+// 
+//  
+//  chaos~
+//  Copyright (C) 2004  Tim Blechmann
+//  
+//  This program is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation; either version 2 of the License, or
+//  (at your option) any later version.
+//  
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//  
+//  You should have received a copy of the GNU General Public License
+//  along with this program; see the file COPYING.  If not, write to
+//  the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+//  Boston, MA 02111-1307, USA.
+
+#include "map_base.hpp"
+
+//  bernoulli map: x[n+1] = 2 * x[n] mod 1             
+//                 0 <= x[n] <  1
+//  taken from Willi-Hans Steeb: Chaos and Fractals
+
+class bernoulli:
+	protected map_base
+{
+public:
+	bernoulli()
+	{
+		m_num_eq = 1:
+		m_data = new data_t[1];
+		set_x(0.5f);
+	}
+
+	~bernoulli()
+	{
+		delete m_data;
+	}
+
+	virtual void m_step()
+	{
+		data_t x = m_data[0];
+
+		if (x < 0.5f)
+			m_data[0] = 2.f * x;
+		else
+			m_data[0] = 2.f * x - 1.f;
+	}
+
+	void set_x(t_float f)
+	{
+		if ( (f >= 0) && (f < 1))
+			m_data[0] = (data_t) f;
+		else
+			post("value for x %f out of range", f);
+	}
+
+	t_float get_x()
+	{
+		return (t_float)m_data[0];
+	}
+};
+
+
+#define BERNOULLI_CALLBACKS							\
+MAP_CALLBACKS;										\
+FLEXT_CALLVAR_F(m_system->get_x, m_system->set_x);
+
+#define BERNOULLI_ATTRIBUTES								\
+MAP_ATTRIBUTES;												\
+FLEXT_ADDATTR_VAR("x",m_system->get_x, m_system->set_x);
+