octave-optim 1.0.17-1 / usr / share / octave / packages / 3.2 / optim-1.0.17 / wrap_f_dfdp.m

%% Copyright (C) 2010 Olaf Till <olaf.till@uni-jena.de>
%%
%% 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 3 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; If not, see <http://www.gnu.org/licenses/>.

function [ret1, ret2] = wrap_f_dfdp (f, dfdp, varargin)

  %% [ret1, ret2] = wrap_f_dfdp (f, dfdp, varargin)
  %%
  %% f and dftp should be the objective function (or "model function" in
  %% curve fitting) and its jacobian, respectively, of an optimization
  %% problem. ret1: f (varagin{:}), ret2: dfdp (varargin{:}). ret2 is
  %% only computed if more than one output argument is given. This
  %% manner of calling f and dfdp is needed by some optimization
  %% functions.

  if (nargin < 3)
    print_usage ();
  end

  if (ischar (f))
    f = str2func (f);
  end

  if (ischar (dfdp))
    dfdp = str2func (dfdp);
  end

  ret1 = f (varargin{:});

  if (nargout > 1)
    ret2 = dfdp (varargin{:});
  end