/usr/share/octave/site/m/sundialsTB/idas/function_types/IDADenseJacFn.m is in octave-sundials 2.5.0-3+b1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | %IDADenseJacFn - type for dense Jacobian function.
%
% The function DJACFUN must be defined as
% FUNCTION [J, FLAG] = DJACFUN(T, YY, YP, RR, CJ)
% and must return a matrix J corresponding to the Jacobian
% (df/dyy + cj*df/dyp).
% The input argument RR contains the current value of f(t,yy,yp).
% If a user data structure DATA was specified in IDAInit, then
% DJACFUN must be defined as
% FUNCTION [J, FLAG, NEW_DATA] = DJACFUN(T, YY, YP, RR, CJ, DATA)
% If the local modifications to the user data structure are needed in
% other user-provided functions then, besides setting the matrix J,
% the DJACFUN function must also set NEW_DATA. Otherwise, it should
% set NEW_DATA=[] (do not set NEW_DATA = DATA as it would lead to
% unnecessary copying).
%
% The function DJACFUN must set FLAG=0 if successful, FLAG<0 if an
% unrecoverable failure occurred, or FLAG>0 if a recoverable error
% occurred.
%
% See also IDASetOptions
%
% NOTE: DJACFUN is specified through the property JacobianFn to
% IDASetOptions and is used only if the property LinearSolver
% was set to 'Dense'.
% Radu Serban <radu@llnl.gov>
% Copyright (c) 2007, The Regents of the University of California.
% $Revision: 1.3 $Date: 2011/05/26 00:01:23 $
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