/* Copyright (C) 2006 Christian Schneider
*
* This file is part of Nomad.
*
* Nomad 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.
*
* Nomad 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 Nomad; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* Created on Jun 20, 2006
*/
package net.sf.nmedit.nmutils.math;
public class Math2
{
/**
* Rounds d until digit '-to'. For example d=123, to=2 returns 120.
* If d=123.456 and to=-2 then 123.45 is returned.
*
* @param d Value to round
* @param to decimal position
* @return rounded value of d
*/
public static double roundTo(double d, int to) {
if (to == 0)
return Math.round(d);
double norm = Math.pow(10.0, -to);
return Math.round(d*norm) / norm;
}
/**
* Returns the value of d as a String. If d is a natural number,
* it is returned without decimal point.
* @param d value that should be converted to a string representation
* @return d as string
*/
public static String doubleToStr(double d) {
double truncated = (int) d;
if (d==truncated)
return Integer.toString((int)d);
else
return Double.toString(d);
}
}