001/** 002 * 003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved. 004 * 005 * This library is free software; you can redistribute it and/or 006 * modify it under the terms of the GNU Lesser General Public 007 * License as published by the Free Software Foundation; either 008 * version 2.1 of the License, or (at your option) any later version. 009 * 010 * This library is distributed in the hope that it will be useful, 011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013 * Lesser General Public License for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public 016 * License along with this library. If not, see <http://www.gnu.org/licenses/>. 017 * 018 **/ 019package lucee.commons.math; 020 021import java.math.BigDecimal; 022import java.math.MathContext; 023 024 025/** 026 * Math Util 027 */ 028public final class MathUtil { 029 030 /** 031 * abs 032 * @param number 033 * @return abs value 034 */ 035 public static double abs(double number) { 036 return (number <= 0.0D) ? 0.0D - number : number; 037 } 038 039 public static double sgn(double number) { 040 return number != 0.0d ? number >= 0.0d ? 1 : -1 : 0; 041 } 042 043 public static int nextPowerOf2(int value) { 044 045 int result = 1; 046 while (result < value) 047 result = result << 1; 048 049 return result; 050 } 051 052 public static BigDecimal divide(BigDecimal left, BigDecimal right) { 053 try { 054 return left.divide(right,BigDecimal.ROUND_UNNECESSARY); 055 } 056 catch (ArithmeticException ex) { 057 return left.divide(right,MathContext.DECIMAL128); 058 } 059 } 060 061 public static BigDecimal add(BigDecimal left, BigDecimal right) { 062 try { 063 return left.add(right,MathContext.UNLIMITED); 064 } 065 catch (ArithmeticException ex) { 066 return left.add(right,MathContext.DECIMAL128); 067 } 068 } 069 070 public static BigDecimal subtract(BigDecimal left, BigDecimal right) { 071 try { 072 return left.subtract(right,MathContext.UNLIMITED); 073 } 074 catch (ArithmeticException ex) { 075 return left.subtract(right,MathContext.DECIMAL128); 076 } 077 } 078 079 public static BigDecimal multiply(BigDecimal left, BigDecimal right) { 080 try { 081 return left.multiply(right,MathContext.UNLIMITED); 082 } 083 catch (ArithmeticException ex) { 084 return left.multiply(right,MathContext.DECIMAL128); 085 } 086 } 087}