/**
* CompareDeadband.java
* Copyright 2005 (c) Andrew Wilson <nuance@sourceforge.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Current Ver: $$
*/
package pcgen.util.testchecker;
import pcgen.util.TestChecker;
/**
* Does a numeric equality check with an acceptible +/- leeway.
*/
public class CompareDeadband extends TestChecker
{
private double deadband;
private double value;
/**
* Constructor
* @param value
* @param deadband
*/
public CompareDeadband(double value, double deadband)
{
this.deadband = deadband;
this.value = value;
}
@Override
public boolean check(Object obj)
{
double aValue = ((Number) obj).doubleValue();
return Math.abs((aValue - this.value)) <= this.deadband;
}
@Override
public StringBuilder scribe(StringBuilder buf)
{
buf.append("a numeric value within ");
buf.append(this.deadband);
buf.append(" of ");
buf.append(this.value);
return buf;
}
}