Here you can find the source of roundToMil(double val)
public static double roundToMil(double val)
//package com.java2s; /*/* w w w.j a v a2 s . c om*/ Copyright 2008, CCTC - Computer Science and Technology Center IBB-DEB - Institute for Biotechnology and Bioengineering - Department of Biological Engineering University of Minho This is free software: you can redistribute it and/or modify it under the terms of the GNU Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This code 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 Public License for more details. You should have received a copy of the GNU Public License along with this code. If not, see <http://www.gnu.org/licenses/>. Created inside the SysBio Research Group (http://sysbio.di.uminho.pt) University of Minho */ public class Main { public static double roundToMil(double val) { double r = val * 1000.0; int l = (int) r; if (r - l >= 0.5) l++; r = (double) l / 1000.0; return r; } }