1 files changed, 77 insertions, 0 deletions
diff --git a/chaos/src/gaussian_map.hpp b/chaos/src/gaussian_map.hpp
new file mode 100644
index 0000000..7793814
--- /dev/null
+++ b/chaos/src/gaussian_map.hpp
@@ -0,0 +1,77 @@
+// 
+//  
+//  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"
+
+
+//  gaussian map: x[n+1] = exp(-b * x[n] * x[n]) + c
+//
+//  taken from Robert C. Hilborn: Chaos and Nonlinear Dynamics 
+
+class gaussian_map:
+	public map_base<1>
+{
+public:
+	gaussian_map()
+	{
+		CHAOS_SYS_INIT(x, 0.5, 0);
+
+		CHAOS_PAR_INIT(b,7);
+		CHAOS_PAR_INIT(c,0.5);
+	}
+
+
+
+	void m_step()
+	{
+		data_t data = m_data[0];
+
+		if (data == 0)
+			m_data[0] = 0.001;
+		else
+			m_data[0] = exp(-CHAOS_PARAMETER(b) * data * data)
+				+ CHAOS_PARAMETER(c);
+	}
+
+	CHAOS_SYSVAR_FUNCS_PRED(x, 0, m_pred_x);
+	bool m_pred_x(t_float f)
+	{
+		return (f >= 0) && (f < 1);
+	}
+
+	CHAOS_SYSPAR_FUNCS(b);
+	CHAOS_SYSPAR_FUNCS(c);
+
+};
+
+#define GAUSSIAN_MAP_CALLBACKS					\
+MAP_CALLBACKS;									\
+CHAOS_SYS_CALLBACKS(x);							\
+CHAOS_SYS_CALLBACKS(b);							\
+CHAOS_SYS_CALLBACKS(c);
+
+#define GAUSSIAN_MAP_ATTRIBUTES					\
+MAP_ATTRIBUTES;									\
+CHAOS_SYS_ATTRIBUTE(x);							\
+CHAOS_SYS_ATTRIBUTE(b);							\
+CHAOS_SYS_ATTRIBUTE(c);
+
+
+