/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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class Main {
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public static void main(String[] args) {
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testIntShiftRight();
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testIntShiftLeft();
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testIntUnsignedShiftRight();
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testLongShiftRight();
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testLongShiftLeft();
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testLongUnsignedShiftRight();
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}
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public static void testIntShiftLeft() {
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int a = myField;
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int b = myOtherField << a;
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if (b != -2147483648) {
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throw new Error("Expected -2147483648, got " + b);
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}
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if (a != 0xFFF) {
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throw new Error("Expected 0xFFF, got " + a);
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}
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}
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public static void testIntShiftRight() {
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int a = myField;
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int b = myOtherField >> a;
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if (b != 0) {
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throw new Error("Expected 0, got " + b);
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}
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if (a != 0xFFF) {
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throw new Error("Expected 0xFFF, got " + a);
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}
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}
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public static void testIntUnsignedShiftRight() {
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int a = myField;
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int b = myOtherField >>> a;
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if (b != 0) {
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throw new Error("Expected 0, got " + b);
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}
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if (a != 0xFFF) {
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throw new Error("Expected 0xFFF, got " + a);
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}
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}
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public static void testLongShiftLeft() {
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long a = myLongField;
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long b = myOtherLongField << a;
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if (b != 0x2468ACF13579BDEL) {
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throw new Error("Expected 0x2468ACF13579BDEL, got " + b);
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}
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// The int conversion will be GVN'ed with the one required
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// by Java specification of long shift left.
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if ((int)a != 0x41) {
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throw new Error("Expected 0x41, got " + a);
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}
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}
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public static void testLongShiftRight() {
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long a = myLongField;
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long b = myOtherLongField >> a;
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if (b != 0x91A2B3C4D5E6F7L) {
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throw new Error("Expected 0x91A2B3C4D5E6F7L, got " + b);
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}
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// The int conversion will be GVN'ed with the one required
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// by Java specification of long shift right.
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if ((int)a != 0x41) {
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throw new Error("Expected 0x41, got " + a);
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}
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}
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public static void testLongUnsignedShiftRight() {
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long a = myLongField;
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long b = myOtherLongField >>> a;
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if (b != 0x91A2B3C4D5E6F7L) {
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throw new Error("Expected 0x91A2B3C4D5E6F7L, got " + b);
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}
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// The int conversion will be GVN'ed with the one required
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// by Java specification of long shift right.
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if ((int)a != 0x41) {
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throw new Error("Expected 0x41, got " + a);
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}
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}
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static int myField = 0xFFF;
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static int myOtherField = 0x1;
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// Use a value that will need to be masked before doing the shift.
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// The maximum shift is 0x3F.
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static long myLongField = 0x41;
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static long myOtherLongField = 0x123456789abcdefL;
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}
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