| /* |
| * Copyright (c) 2018, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * 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 General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| |
| package org.graalvm.compiler.core.common.util; |
| |
| public final class UnsignedLong { |
| private final long value; |
| |
| public UnsignedLong(long value) { |
| this.value = value; |
| } |
| |
| public long asLong() { |
| return value; |
| } |
| |
| public boolean equals(long unsignedValue) { |
| return value == unsignedValue; |
| } |
| |
| public boolean isLessThan(long unsignedValue) { |
| return Long.compareUnsigned(value, unsignedValue) < 0; |
| } |
| |
| public boolean isLessOrEqualTo(long unsignedValue) { |
| return Long.compareUnsigned(value, unsignedValue) <= 0; |
| } |
| |
| public UnsignedLong times(long unsignedValue) { |
| if (unsignedValue != 0 && Long.compareUnsigned(value, Long.divideUnsigned(0xffff_ffff_ffff_ffffL, unsignedValue)) > 0) { |
| throw new ArithmeticException(); |
| } |
| return new UnsignedLong(value * unsignedValue); |
| } |
| |
| public UnsignedLong minus(long unsignedValue) { |
| if (Long.compareUnsigned(value, unsignedValue) < 0) { |
| throw new ArithmeticException(); |
| } |
| return new UnsignedLong(value - unsignedValue); |
| } |
| |
| public UnsignedLong plus(long unsignedValue) { |
| if (Long.compareUnsigned(0xffff_ffff_ffff_ffffL - unsignedValue, value) < 0) { |
| throw new ArithmeticException(); |
| } |
| return new UnsignedLong(value + unsignedValue); |
| } |
| |
| public UnsignedLong wrappingPlus(long unsignedValue) { |
| return new UnsignedLong(value + unsignedValue); |
| } |
| |
| public UnsignedLong wrappingTimes(long unsignedValue) { |
| return new UnsignedLong(value * unsignedValue); |
| } |
| |
| @Override |
| public String toString() { |
| return "UnsignedLong(" + Long.toUnsignedString(value) + ")"; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| UnsignedLong that = (UnsignedLong) o; |
| return value == that.value; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Long.hashCode(value); |
| } |
| } |