Coverage Summary for Class: DifficultyUtils (co.rsk.util)

Class Class, % Method, % Line, %
DifficultyUtils 0% (0/1) 0% (0/3) 0% (0/6)


1 /* 2  * This file is part of RskJ 3  * Copyright (C) 2017 RSK Labs Ltd. 4  * 5  * This program is free software: you can redistribute it and/or modify 6  * it under the terms of the GNU Lesser General Public License as published by 7  * the Free Software Foundation, either version 3 of the License, or 8  * (at your option) any later version. 9  * 10  * This program is distributed in the hope that it will be useful, 11  * but WITHOUT ANY WARRANTY; without even the implied warranty of 12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13  * GNU Lesser General Public License for more details. 14  * 15  * You should have received a copy of the GNU Lesser General Public License 16  * along with this program. If not, see <http://www.gnu.org/licenses/>. 17  */ 18  19 package co.rsk.util; 20  21 import co.rsk.core.BlockDifficulty; 22  23 import java.math.BigInteger; 24  25 /** 26  * Created by martin.medina on 4/8/16. 27  */ 28 public class DifficultyUtils { 29  30  public static final BigInteger MAX = BigInteger.valueOf(2).pow(256); 31  32  public static BigInteger difficultyToTarget(BlockDifficulty difficulty) { 33  34  BigInteger resultDifficulty = difficulty.asBigInteger(); 35  36  if (resultDifficulty.compareTo(BigInteger.valueOf(2)) < 1) { 37  // minDifficulty is 3 because target needs to be of length 256 38  // and not have 1 in the position 255 (count start from 0) 39  resultDifficulty = BigInteger.valueOf(3); 40  } 41  42  return MAX.divide(resultDifficulty); 43  } 44 }