abs.comp

来自「CNC 的开放码,EMC2 V2.2.8版」· COMP 代码 · 共 35 行

//   This is a component for EMC2 HAL
//   Copyright 2006 John Kasunich <jmkasunich at sourceforge dot net>
//
//   This program is free software; you can redistribute it and/or
//   modify it under the terms of version 2 of the GNU General
//   Public License as published by the Free Software Foundation.
//
//   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
component abs "Compute the absolute value and sign of the input signal";

pin in float in "Analog input value" ;
pin out float out "Analog output value, always positive";
pin out bit sign "Sign of input, false for positive, true for negative" ;

function _;
license "GPL";
;;
FUNCTION(_) {
    float tmp = in;
    if ( tmp >= 0.0 ) {
	sign = 0;
	out = tmp;
    } else {
	sign = 1;
	out = -tmp;
    }
}