[38635e]: inst / __incrementalRatio__.m Maximize Restore History

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__incrementalRatio__.m    25 lines (21 with data), 1.0 kB

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## Copyright (C) 2008 simone pernice
##
## 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; if not, write to the Free Software
## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
## __incrementalRatio__ compute the incremental ratio of f(x) in x0 with dx2/2 delta
## Author: simone pernice
## Created: 2008-08-18
function ret = __incrementalRatio__ (f, x0, dx2)
ret = (feval(f, x0+dx2)-feval(f, x0-dx2))/2/dx2;
endfunction