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########################################################################
##
## Copyright (C) 2016-2025 The Octave Project Developers
##
## See the file COPYRIGHT.md in the top-level directory of this
## distribution or <https://octave.org/copyright/>.
##
## This file is part of Octave.
##
## Octave 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 3 of the License, or
## (at your option) any later version.
##
## Octave 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 Octave; see the file COPYING. If not, see
## <https://www.gnu.org/licenses/>.
##
########################################################################
## -*- texinfo -*-
## @deftypefn {} {[@var{defaults}, @var{classes}, @var{attributes}] =} odedefaults (@var{n}, @var{t0}, @var{tf})
## Undocumented internal function.
## @end deftypefn
function [rdefaults, rclasses, rattributes] = odedefaults (n, t0, tf)
persistent defaults = struct ("AbsTol", 1e-6,
"BDF", "off",
"Events", [],
"InitialSlope", zeros (n,1),
"InitialStep", [],
"Jacobian", [],
"JConstant", "off",
"JPattern", [],
"Mass", [],
"MassSingular", "maybe",
"MaxOrder", 5,
"MaxStep", 0.1 * abs (tf - t0),
"MStateDependence", "weak",
"MvPattern", [],
"NonNegative", [],
"NormControl", "off",
"OutputFcn", [],
"OutputSel", [],
"Refine", 1,
"RelTol", 1e-3,
"Stats", "off",
"Vectorized", "off");
defaults.InitialSlope = zeros (n,1);
defaults.MaxStep = 0.1 * abs (tf -t0);
persistent classes = struct ("AbsTol", {{"float"}},
"BDF", "char",
"Events", {{"function_handle"}},
"InitialSlope", {{"float"}},
"InitialStep", {{"float"}},
"Jacobian", {{"float", "function_handle", "cell"}},
"JConstant", "char",
"JPattern", {{"float"}},
"Mass", {{"float", "function_handle"}},
"MassSingular", "char",
"MaxOrder", {{"float"}},
"MaxStep", {{"float"}},
"MStateDependence", "char",
"MvPattern", {{"float"}},
"NonNegative", {{"float"}},
"NormControl", "char",
"OutputFcn", {{"function_handle"}},
"OutputSel", {{"float"}},
"Refine", {{"float"}},
"RelTol", {{"float"}},
"Stats", "char",
"Vectorized", "char");
persistent attributes = struct ("AbsTol", {{"real", "vector", "positive"}},
"BDF", {{"on", "off"}},
"Events", {{}},
"InitialSlope", {{"real", "vector", "numel", n}},
"InitialStep", {{"positive", "scalar"}},
"Jacobian", {{}},
"JConstant", {{"on", "off"}},
"JPattern", {{}},
"Mass", {{}},
"MassSingular", {{"no", "maybe", "yes"}},
"MaxOrder", {{">=", 0, "<=", 5, "integer"}},
"MaxStep", {{"positive", "scalar", "real"}},
"MStateDependence", {{"weak", "strong", "none"}},
"MvPattern", {{}},
"NonNegative", {{"vector", "integer", "positive"}},
"NormControl", {{"on", "off"}},
"OutputFcn", {{}},
"OutputSel", {{"vector", "integer", "positive",...
">", 0, "<=", n}},
"Refine", {{"scalar", ">", 0, "integer"}},
"RelTol", {{"scalar", "positive", "real"}},
"Stats", {{"on", "off"}},
"Vectorized", {{"on", "off"}});
attributes.InitialSlope = {"real", "vector", "numel", n};
attributes.OutputSel = {"vector", "integer", "positive", ">", 0, "<=", n};
rdefaults = defaults;
rclasses = classes;
rattributes = attributes;
endfunction
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