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Diffstat (limited to 'chaos/src/linear_congruental.hpp')
| -rw-r--r-- | chaos/src/linear_congruental.hpp | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/chaos/src/linear_congruental.hpp b/chaos/src/linear_congruental.hpp new file mode 100644 index 0000000..9c6310f --- /dev/null +++ b/chaos/src/linear_congruental.hpp @@ -0,0 +1,67 @@ +// +// +// 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" + +// tent map: x[n+1] = A*x[n] + B mod C +// +// taken from Julien C. Sprott, Chaos and Time-Series Analysis + +class linear_congruental: + public map_base<2> +{ +public: + linear_congruental() + { + CHAOS_SYS_INIT(x, 0, 0); + + CHAOS_PAR_INIT(A, 1741); + CHAOS_PAR_INIT(B, 54773); + CHAOS_PAR_INIT(C, 259200); + } + + void m_step() + { + data_t x = m_data[0]; + + m_data[0] = std::fmod( CHAOS_PARAMETER(A) * x + CHAOS_PARAMETER(B), CHAOS_PARAMETER(C)); + } + + CHAOS_SYSVAR_FUNCS(x,0); + + CHAOS_SYSPAR_FUNCS(A); + CHAOS_SYSPAR_FUNCS(B); + CHAOS_SYSPAR_FUNCS(C); +}; + +#define LINEAR_CONGRUENTAL_CALLBACKS \ +MAP_CALLBACKS; \ +CHAOS_SYS_CALLBACKS(A); \ +CHAOS_SYS_CALLBACKS(B); \ +CHAOS_SYS_CALLBACKS(C); \ +CHAOS_SYS_CALLBACKS(x); + +#define LINEAR_CONGRUENTAL_ATTRIBUTES \ +MAP_ATTRIBUTES; \ +CHAOS_SYS_ATTRIBUTE(A); \ +CHAOS_SYS_ATTRIBUTE(B); \ +CHAOS_SYS_ATTRIBUTE(C); \ +CHAOS_SYS_ATTRIBUTE(x); + |