## Copyright (C) 2010-2016 Olaf Till <i7tiol@t-online.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 prt = dcdp (f, p, dp, func[, bounds])
##
## This is an interface to __dfdp__.m, similar to dfdp.m, but for
## functions only of parameters 'p', not of independents 'x'. See
## dfdp.m.
##
## dfpdp is more general and is meant to be used instead of dcdp in
## optimization.

function prt = dcdp (f, p, dp, func, bounds)

  if (ischar (func))
    func = str2func (func);
  endif

  hook.f = f;

  if (nargin > 4)
    hook.lbounds = bounds(:, 1);
    hook.ubounds = bounds(:, 2);
  endif

  hook.diffp = abs (dp);
  hook.fixed = dp == 0;
  hook.diff_onesided = dp < 0;

  prt = __dfdp__ (p, func, hook);

endfunction
