//   This is a component for LinuxCNC HAL
//   Copyright 2006 Jeff Epler <jepler@unpythonic.net>
//
//   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.
component offset "Adds an offset to an input, and subtracts it from the feedback value.";

function update_output "Updated the output value by adding the offset to the input.";
function update_feedback "Update the feedback value by subtracting the offset from the feedback.";

pin in float offset "The offset value";

pin in float in "The input value";
pin out float out "The output value";

pin in float fb_in "The feedback input value";
pin out float fb_out "The feedback output value";

license "GPL";
author "Jeff Epler";
;;

FUNCTION(update_feedback) { fb_out = fb_in - offset; }
FUNCTION(update_output)   { out = in + offset; }