Here you can find the source of parseToEngineeringNotation(double val, int decimalHouses)
| Parameter | Description |
|---|---|
| val | a parameter |
| decimalHouses | a parameter |
public static String parseToEngineeringNotation(double val, int decimalHouses)
//package com.java2s; /*/* w ww . j a va 2 s . co m*/ * Copyright (c) 2004-2013 Universidade do Porto - Faculdade de Engenharia * Laborat?rio de Sistemas e Tecnologia Subaqu?tica (LSTS) * All rights reserved. * Rua Dr. Roberto Frias s/n, sala I203, 4200-465 Porto, Portugal * * This file is part of Neptus, Command and Control Framework. * * Commercial Licence Usage * Licencees holding valid commercial Neptus licences may use this file * in accordance with the commercial licence agreement provided with the * Software or, alternatively, in accordance with the terms contained in a * written agreement between you and Universidade do Porto. For licensing * terms, conditions, and further information contact lsts@fe.up.pt. * * European Union Public Licence - EUPL v.1.1 Usage * Alternatively, this file may be used under the terms of the EUPL, * Version 1.1 only (the "Licence"), appearing in the file LICENCE.md * included in the packaging of this file. You may not use this work * except in compliance with the Licence. Unless required by applicable * law or agreed to in writing, software distributed under the Licence is * distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF * ANY KIND, either express or implied. See the Licence for the specific * language governing permissions and limitations at * https://www.lsts.pt/neptus/licence. * * For more information please see <http://lsts.fe.up.pt/neptus>. * * Author: * 13/Jun/2005 */ import java.text.DecimalFormat; public class Main { /** * @param val * @param decimalHouses * @return */ public static String parseToEngineeringNotation(double val, int decimalHouses) { DecimalFormat engNot = new DecimalFormat("##0.###E0"); String pl = engNot.format(val); String[] pl2 = pl.split("E"); double vl = Double.parseDouble(pl2[0].replace(',', '.')); vl = round(vl, decimalHouses); int mul = Integer.parseInt(pl2[1]); String mulStr = ""; switch (mul) { case 24: mulStr = "Y"; break; case 21: mulStr = "Z"; break; case 18: mulStr = "E"; break; case 15: mulStr = "P"; break; case 12: mulStr = "T"; break; case 9: mulStr = "G"; break; case 6: mulStr = "M"; break; case 3: mulStr = "k"; break; case -3: mulStr = "m"; break; case -6: mulStr = "u"; mulStr = "\u00B5"; break; case -9: mulStr = "n"; break; case -12: mulStr = "p"; break; case -15: mulStr = "f"; break; case -18: mulStr = "a"; break; case -21: mulStr = "z"; break; case -24: mulStr = "y"; break; default: mulStr = ""; break; } return (decimalHouses == 0 ? (long) vl + "" : vl) + mulStr; } /** * @param val * @param decimalHouses * @return */ public static double round(double val, int decimalHouses) { double base = Math.pow(10d, decimalHouses); double result = Math.round(val * base) / base; return result; } /** * @param val * @param decimalHouses * @return */ public static float round(float val, int decimalHouses) { float base = (float) Math.pow(10f, decimalHouses); float result = Math.round(val * base) / base; return result; } }