/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @author Elena Semukhina
*/
package org.apache.harmony.tests.java.math;
import junit.framework.TestCase;
import java.math.BigInteger;
/**
* Class: java.math.BigInteger
* Methods: and, andNot
*/
public class BigIntegerNotTest extends TestCase {
/**
* andNot for two positive numbers; the first is longer
*/
public void testAndNotPosPosFirstLonger() {
byte aBytes[] = {-128, 9, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, -117, 23, 87, -25, -75};
byte bBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23};
int aSign = 1;
int bSign = 1;
byte rBytes[] = {0, -128, 9, 56, 100, 0, 0, 1, 1, 90, 1, -32, 0, 10, -126, 21, 82, -31, -96};
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = new BigInteger(bSign, bBytes);
BigInteger result = aNumber.andNot(bNumber);
byte resBytes[] = new byte[rBytes.length];
resBytes = result.toByteArray();
for(int i = 0; i < resBytes.length; i++) {
assertTrue(resBytes[i] == rBytes[i]);
}
assertEquals("incorrect sign", 1, result.signum());
}
/**
* andNot for two positive numbers; the first is shorter
*/
public void testAndNotPosPosFirstShorter() {
byte aBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23};
byte bBytes[] = {-128, 9, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, -117, 23, 87, -25, -75};
int aSign = 1;
int bSign = 1;
byte rBytes[] = {73, -92, -48, 4, 12, 6, 4, 32, 48, 64, 0, 8, 2};
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = new BigInteger(bSign, bBytes);
BigInteger result = aNumber.andNot(bNumber);
byte resBytes[] = new byte[rBytes.length];
resBytes = result.toByteArray();
for(int i = 0; i < resBytes.length; i++) {
assertTrue(resBytes[i] == rBytes[i]);
}
assertEquals("incorrect sign", 1, result.signum());
}
/**
* andNot for two negative numbers; the first is longer
*/
public void testAndNotNegNegFirstLonger() {
byte aBytes[] = {-128, 9, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, -117, 23, 87, -25, -75};
byte bBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23};
int aSign = -1;
int bSign = -1;
byte rBytes[] = {73, -92, -48, 4, 12, 6, 4, 32, 48, 64, 0, 8, 2};
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = new BigInteger(bSign, bBytes);
BigInteger result = aNumber.andNot(bNumber);
byte resBytes[] = new byte[rBytes.length];
resBytes = result.toByteArray();
for(int i = 0; i < resBytes.length; i++) {
assertTrue(resBytes[i] == rBytes[i]);
}
assertEquals("incorrect sign", 1, result.signum());
}
/**
* andNot for a negative and a positive numbers; the first is longer
*/
public void testNegPosFirstLonger() {
byte aBytes[] = {-128, 9, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, -117, 23, 87, -25, -75};
byte bBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23};
int aSign = -1;
int bSign = 1;
byte rBytes[] = {-1, 127, -10, -57, -101, 1, 2, 2, 2, -96, -16, 8, -40, -59, 68, -88, -88, 16, 72};
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = new BigInteger(bSign, bBytes);
BigInteger result = aNumber.andNot(bNumber);
byte resBytes[] = new byte[rBytes.length];
resBytes = result.toByteArray();
for(int i = 0; i < resBytes.length; i++) {
assertTrue(resBytes[i] == rBytes[i]);
}
assertEquals("incorrect sign", -1, result.signum());
}
/**
* Not for ZERO
*/
public void testNotZero() {
byte rBytes[] = {-1};
BigInteger aNumber = BigInteger.ZERO;
BigInteger result = aNumber.not();
byte resBytes[] = new byte[rBytes.length];
resBytes = result.toByteArray();
for(int i = 0; i < resBytes.length; i++) {
assertTrue(resBytes[i] == rBytes[i]);
}
assertEquals("incorrect sign", -1, result.signum());
}
/**
* Not for ONE
*/
public void testNotOne() {
byte rBytes[] = {-2};
BigInteger aNumber = BigInteger.ONE;
BigInteger result = aNumber.not();
byte resBytes[] = new byte[rBytes.length];
resBytes = result.toByteArray();
for(int i = 0; i < resBytes.length; i++) {
assertTrue(resBytes[i] == rBytes[i]);
}
assertEquals("incorrect sign", -1, result.signum());
}
/**
* Not for a positive number
*/
public void testNotPos() {
byte aBytes[] = {-128, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, -117};
int aSign = 1;
byte rBytes[] = {-1, 127, -57, -101, 1, 75, -90, -46, -92, -4, 14, -36, -27, 116};
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger result = aNumber.not();
byte resBytes[] = new byte[rBytes.length];
resBytes = result.toByteArray();
for(int i = 0; i < resBytes.length; i++) {
assertTrue(resBytes[i] == rBytes[i]);
}
assertEquals("incorrect sign", -1, result.signum());
}
/**
* Not for a negative number
*/
public void testNotNeg() {
byte aBytes[] = {-128, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, -117};
int aSign = -1;
byte rBytes[] = {0, -128, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, -118};
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger result = aNumber.not();
byte resBytes[] = new byte[rBytes.length];
resBytes = result.toByteArray();
for(int i = 0; i < resBytes.length; i++) {
assertTrue(resBytes[i] == rBytes[i]);
}
assertEquals("incorrect sign", 1, result.signum());
}
/**
* Not for a negative number
*/
public void testNotSpecialCase() {
byte aBytes[] = {-1, -1, -1, -1};
int aSign = 1;
byte rBytes[] = {-1, 0, 0, 0, 0};
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger result = aNumber.not();
byte resBytes[] = new byte[rBytes.length];
resBytes = result.toByteArray();
for(int i = 0; i < resBytes.length; i++) {
assertTrue(resBytes[i] == rBytes[i]);
}
assertEquals("incorrect sign", -1, result.signum());
}
}