libcore/math/src/test/java/org/apache/harmony/math/tests/java/math/BigIntegerMultiplyTest.java - platform/dalvik - Git at Google

 /*
  *  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
  * @version $Revision$
  */

 package org.apache.harmony.math.tests.java.math;

 import dalvik.annotation.TestTargetClass;
 import dalvik.annotation.TestTargets;
 import dalvik.annotation.TestLevel;
 import dalvik.annotation.TestTargetNew;

 import java.math.BigInteger;

 import junit.framework.TestCase;
 @TestTargetClass(BigInteger.class)
 /**
  * Class:  java.math.BigInteger
  * Method: multiply
  */
 public class BigIntegerMultiplyTest extends TestCase {
     /**
      * Multiply two negative numbers of the same length
      */
     @TestTargetNew(
         level = TestLevel.PARTIAL_COMPLETE,
         notes = "This is a complete subset of tests for multiply method.",
         method = "multiply",
         args = {java.math.BigInteger.class}
     )
     public void testCase1() {
         byte aBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3};
         byte bBytes[] = {10, 20, 30, 40, 50, 60, 70, 10, 20, 30};
         int aSign = -1;
         int bSign = -1;
         byte rBytes[] = {10, 40, 100, -55, 96, 51, 76, 40, -45, 85, 105, 4, 28, -86, -117, -52, 100, 120, 90};
         BigInteger aNumber = new BigInteger(aSign, aBytes);
         BigInteger bNumber = new BigInteger(bSign, bBytes);
         BigInteger result = aNumber.multiply(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());
     }

     /**
      * Multiply two numbers of the same length and different signs.
      * The first is negative.
      */
     @TestTargetNew(
         level = TestLevel.PARTIAL_COMPLETE,
         notes = "This is a complete subset of tests for multiply method.",
         method = "multiply",
         args = {java.math.BigInteger.class}
     )
     public void testCase2() {
         byte aBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3};
         byte bBytes[] = {10, 20, 30, 40, 50, 60, 70, 10, 20, 30};
         int aSign = -1;
         int bSign = 1;
         byte rBytes[] = {-11, -41, -101, 54, -97, -52, -77, -41, 44, -86, -106, -5, -29, 85, 116, 51, -101, -121, -90};
         BigInteger aNumber = new BigInteger(aSign, aBytes);
         BigInteger bNumber = new BigInteger(bSign, bBytes);
         BigInteger result = aNumber.multiply(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());
     }

     /**
      * Multiply two positive numbers of different length.
      * The first is longer.
      */
     @TestTargetNew(
         level = TestLevel.PARTIAL_COMPLETE,
         notes = "This is a complete subset of tests for multiply method.",
         method = "multiply",
         args = {java.math.BigInteger.class}
     )
     public void testCase3() {
         byte aBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 1, 2, 3, 4, 5};
         byte bBytes[] = {10, 20, 30, 40, 50, 60, 70, 10, 20, 30};
         int aSign = 1;
         int bSign = 1;
         byte rBytes[] = {10, 40, 100, -55, 96, 51, 76, 40, -45, 85, 115, 44, -127,
                          115, -21, -62, -15, 85, 64, -87, -2, -36, -36, -106};
         BigInteger aNumber = new BigInteger(aSign, aBytes);
         BigInteger bNumber = new BigInteger(bSign, bBytes);
         BigInteger result = aNumber.multiply(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());
     }

     /**
      * Multiply two positive numbers of different length.
      * The second is longer.
      */
     @TestTargetNew(
         level = TestLevel.PARTIAL_COMPLETE,
         notes = "This is a complete subset of tests for multiply method.",
         method = "multiply",
         args = {java.math.BigInteger.class}
     )
     public void testCase4() {
         byte aBytes[] = {10, 20, 30, 40, 50, 60, 70, 10, 20, 30};
         byte bBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 1, 2, 3, 4, 5};
         int aSign = 1;
         int bSign = 1;
         byte rBytes[] = {10, 40, 100, -55, 96, 51, 76, 40, -45, 85, 115, 44, -127,
                          115, -21, -62, -15, 85, 64, -87, -2, -36, -36, -106};
         BigInteger aNumber = new BigInteger(aSign, aBytes);
         BigInteger bNumber = new BigInteger(bSign, bBytes);
         BigInteger result = aNumber.multiply(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());
     }

     /**
      * Multiply two numbers of different length and different signs.
      * The first is positive.
      * The first is longer.
      */
     @TestTargetNew(
         level = TestLevel.PARTIAL_COMPLETE,
         notes = "This is a complete subset of tests for multiply method.",
         method = "multiply",
         args = {java.math.BigInteger.class}
     )
     public void testCase5() {
         byte aBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 1, 2, 3, 4, 5};
         byte bBytes[] = {10, 20, 30, 40, 50, 60, 70, 10, 20, 30};
         int aSign = 1;
         int bSign = -1;
         byte rBytes[] = {-11, -41, -101, 54, -97, -52, -77, -41, 44, -86, -116, -45, 126,
                          -116, 20, 61, 14, -86, -65, 86, 1, 35, 35, 106};
         BigInteger aNumber = new BigInteger(aSign, aBytes);
         BigInteger bNumber = new BigInteger(bSign, bBytes);
         BigInteger result = aNumber.multiply(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());
     }

     /**
      * Multiply two numbers of different length and different signs.
      * The first is positive.
      * The second is longer.
      */
     @TestTargetNew(
         level = TestLevel.PARTIAL_COMPLETE,
         notes = "This is a complete subset of tests for multiply method.",
         method = "multiply",
         args = {java.math.BigInteger.class}
     )
     public void testCase6() {
         byte aBytes[] = {10, 20, 30, 40, 50, 60, 70, 10, 20, 30};
         byte bBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 1, 2, 3, 4, 5};
         int aSign = 1;
         int bSign = -1;
         byte rBytes[] = {-11, -41, -101, 54, -97, -52, -77, -41, 44, -86, -116, -45, 126,
                          -116, 20, 61, 14, -86, -65, 86, 1, 35, 35, 106};
         BigInteger aNumber = new BigInteger(aSign, aBytes);
         BigInteger bNumber = new BigInteger(bSign, bBytes);
         BigInteger result = aNumber.multiply(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());
     }

     /**
      * Multiply a number by zero.
      */
     @TestTargetNew(
         level = TestLevel.PARTIAL_COMPLETE,
         notes = "This is a complete subset of tests for multiply method.",
         method = "multiply",
         args = {java.math.BigInteger.class}
     )
     public void testCase7() {
         byte aBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 1, 2, 3, 4, 5};
         byte bBytes[] = {0};
         int aSign = 1;
         int bSign = 0;
         byte rBytes[] = {0};
         BigInteger aNumber = new BigInteger(aSign, aBytes);
         BigInteger bNumber = new BigInteger(bSign, bBytes);
         BigInteger result = aNumber.multiply(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", 0, result.signum());
     }

     /**
      * Multiply a number by ZERO.
      */
     @TestTargetNew(
         level = TestLevel.PARTIAL_COMPLETE,
         notes = "This is a complete subset of tests for multiply method.",
         method = "multiply",
         args = {java.math.BigInteger.class}
     )
     public void testCase8() {
         byte aBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 1, 2, 3, 4, 5};
         int aSign = 1;
         byte rBytes[] = {0};
         BigInteger aNumber = new BigInteger(aSign, aBytes);
         BigInteger bNumber = BigInteger.ZERO;
         BigInteger result = aNumber.multiply(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", 0, result.signum());
     }

     /**
      * Multiply a positive number by ONE.
      */
     @TestTargetNew(
         level = TestLevel.PARTIAL_COMPLETE,
         notes = "This is a complete subset of tests for multiply method.",
         method = "multiply",
         args = {java.math.BigInteger.class}
     )
     public void testCase9() {
         byte aBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 1, 2, 3, 4, 5};
         int aSign = 1;
         byte rBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 1, 2, 3, 4, 5};
         BigInteger aNumber = new BigInteger(aSign, aBytes);
         BigInteger bNumber = BigInteger.ONE;
         BigInteger result = aNumber.multiply(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());
     }

     /**
      * Multiply a negative number by ONE.
      */
     @TestTargetNew(
         level = TestLevel.PARTIAL_COMPLETE,
         notes = "This is a complete subset of tests for multiply method.",
         method = "multiply",
         args = {java.math.BigInteger.class}
     )
     public void testCase10() {
         byte aBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 1, 2, 3, 4, 5};
         int aSign = -1;
         byte rBytes[] = {-2, -3, -4, -5, -6, -7, -8, -2, -3, -4, -2, -3, -4, -5, -5};
         BigInteger aNumber = new BigInteger(aSign, aBytes);
         BigInteger bNumber = BigInteger.ONE;
         BigInteger result = aNumber.multiply(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());
     }

     /**
      * Multiply two numbers of 4 bytes length.
      */
     @TestTargetNew(
         level = TestLevel.PARTIAL_COMPLETE,
         notes = "This is a complete subset of tests for multiply method.",
         method = "multiply",
         args = {java.math.BigInteger.class}
     )
     public void testIntbyInt1() {
         byte aBytes[] = {10, 20, 30, 40};
         byte bBytes[] = {1, 2, 3, 4};
         int aSign = 1;
         int bSign = -1;
         byte rBytes[] = {-11, -41, -101, 55, 5, 15, 96};
         BigInteger aNumber = new BigInteger(aSign, aBytes);
         BigInteger bNumber = new BigInteger(bSign, bBytes);
         BigInteger result = aNumber.multiply(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());
     }

     /**
      * Multiply two numbers of 4 bytes length.
      */
     @TestTargetNew(
         level = TestLevel.PARTIAL_COMPLETE,
         notes = "This is a complete subset of tests for multiply method.",
         method = "multiply",
         args = {java.math.BigInteger.class}
     )
     public void testIntbyInt2() {
         byte aBytes[] = {-1, -1, -1, -1};
         byte bBytes[] = {-1, -1, -1, -1};
         int aSign = 1;
         int bSign = 1;
         byte rBytes[] = {0, -1, -1, -1, -2, 0, 0, 0, 1};
         BigInteger aNumber = new BigInteger(aSign, aBytes);
         BigInteger bNumber = new BigInteger(bSign, bBytes);
         BigInteger result = aNumber.multiply(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());
     }

     /**
      * Negative exponent.
      */
     @TestTargetNew(
         level = TestLevel.PARTIAL_COMPLETE,
         notes = "This is a complete subset of tests for pow method.",
         method = "pow",
         args = {int.class}
     )
     public void testPowException() {
         byte aBytes[] = {1, 2, 3, 4, 5, 6, 7};
         int aSign = 1;
         int exp = -5;
         BigInteger aNumber = new BigInteger(aSign, aBytes);
         try {
             aNumber.pow(exp);
             fail("ArithmeticException has not been caught");
         } catch (ArithmeticException e) {
             assertEquals("Improper exception message", "Negative exponent", e.getMessage());
         }
     }

     /**
      * Exponentiation of a negative number to an odd exponent.
      */
     @TestTargetNew(
         level = TestLevel.PARTIAL_COMPLETE,
         notes = "This is a complete subset of tests for pow method.",
         method = "pow",
         args = {int.class}
     )
     public void testPowNegativeNumToOddExp() {
         byte aBytes[] = {50, -26, 90, 69, 120, 32, 63, -103, -14, 35};
         int aSign = -1;
         int exp = 5;
         byte rBytes[] = {-21, -94, -42, -15, -127, 113, -50, -88, 115, -35, 3,
             59, -92, 111, -75, 103, -42, 41, 34, -114, 99, -32, 105, -59, 127,
             45, 108, 74, -93, 105, 33, 12, -5, -20, 17, -21, -119, -127, -115,
             27, -122, 26, -67, 109, -125, 16, 91, -70, 109};
         BigInteger aNumber = new BigInteger(aSign, aBytes);
         BigInteger result = aNumber.pow(exp);
         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());
     }

     /**
      * Exponentiation of a negative number to an even exponent.
      */
     @TestTargetNew(
         level = TestLevel.PARTIAL_COMPLETE,
         notes = "This is a complete subset of tests for pow method.",
         method = "pow",
         args = {int.class}
     )
     public void testPowNegativeNumToEvenExp() {
         byte aBytes[] = {50, -26, 90, 69, 120, 32, 63, -103, -14, 35};
         int aSign = -1;
         int exp = 4;
         byte rBytes[] = {102, 107, -122, -43, -52, -20, -27, 25, -9, 88, -13,
             75, 78, 81, -33, -77, 39, 27, -37, 106, 121, -73, 108, -47, -101,
             80, -25, 71, 13, 94, -7, -33, 1, -17, -65, -70, -61, -3, -47};
         BigInteger aNumber = new BigInteger(aSign, aBytes);
         BigInteger result = aNumber.pow(exp);
         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());
     }

     /**
      * Exponentiation of a negative number to zero exponent.
      */
     @TestTargetNew(
         level = TestLevel.PARTIAL_COMPLETE,
         notes = "This is a complete subset of tests for pow method.",
         method = "pow",
         args = {int.class}
     )
     public void testPowNegativeNumToZeroExp() {
         byte aBytes[] = {50, -26, 90, 69, 120, 32, 63, -103, -14, 35};
         int aSign = -1;
         int exp = 0;
         byte rBytes[] = {1};
         BigInteger aNumber = new BigInteger(aSign, aBytes);
         BigInteger result = aNumber.pow(exp);
         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());
     }

     /**
      * Exponentiation of a positive number.
      */
     @TestTargetNew(
         level = TestLevel.PARTIAL_COMPLETE,
         notes = "This is a complete subset of tests for pow method.",
         method = "pow",
         args = {int.class}
     )
     public void testPowPositiveNum() {
         byte aBytes[] = {50, -26, 90, 69, 120, 32, 63, -103, -14, 35};
         int aSign = 1;
         int exp = 5;
         byte rBytes[] = {20, 93, 41, 14, 126, -114, 49, 87, -116, 34, -4, -60,
             91, -112, 74, -104, 41, -42, -35, 113, -100, 31, -106, 58, -128,
             -46, -109, -75, 92, -106, -34, -13, 4, 19, -18, 20, 118, 126, 114,
             -28, 121, -27, 66, -110, 124, -17, -92, 69, -109};
         BigInteger aNumber = new BigInteger(aSign, aBytes);
         BigInteger result = aNumber.pow(exp);
         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());
     }

     /**
      * Exponentiation of a negative number to zero exponent.
      */
     @TestTargetNew(
         level = TestLevel.PARTIAL_COMPLETE,
         notes = "This is a complete subset of tests for pow method.",
         method = "pow",
         args = {int.class}
     )
     public void testPowPositiveNumToZeroExp() {
         byte aBytes[] = {50, -26, 90, 69, 120, 32, 63, -103, -14, 35};
         int aSign = 1;
         int exp = 0;
         byte rBytes[] = {1};
         BigInteger aNumber = new BigInteger(aSign, aBytes);
         BigInteger result = aNumber.pow(exp);
         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());
     }
 }
	/*
	* 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
	* @version $Revision$
	*/

	package org.apache.harmony.math.tests.java.math;

	import dalvik.annotation.TestTargetClass;
	import dalvik.annotation.TestTargets;
	import dalvik.annotation.TestLevel;
	import dalvik.annotation.TestTargetNew;

	import java.math.BigInteger;

	import junit.framework.TestCase;
	@TestTargetClass(BigInteger.class)
	/**
	* Class: java.math.BigInteger
	* Method: multiply
	*/
	public class BigIntegerMultiplyTest extends TestCase {
	/**
	* Multiply two negative numbers of the same length
	*/
	@TestTargetNew(
	level = TestLevel.PARTIAL_COMPLETE,
	notes = "This is a complete subset of tests for multiply method.",
	method = "multiply",
	args = {java.math.BigInteger.class}
	)
	public void testCase1() {
	byte aBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3};
	byte bBytes[] = {10, 20, 30, 40, 50, 60, 70, 10, 20, 30};
	int aSign = -1;
	int bSign = -1;
	byte rBytes[] = {10, 40, 100, -55, 96, 51, 76, 40, -45, 85, 105, 4, 28, -86, -117, -52, 100, 120, 90};
	BigInteger aNumber = new BigInteger(aSign, aBytes);
	BigInteger bNumber = new BigInteger(bSign, bBytes);
	BigInteger result = aNumber.multiply(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());
	}

	/**
	* Multiply two numbers of the same length and different signs.
	* The first is negative.
	*/
	@TestTargetNew(
	level = TestLevel.PARTIAL_COMPLETE,
	notes = "This is a complete subset of tests for multiply method.",
	method = "multiply",
	args = {java.math.BigInteger.class}
	)
	public void testCase2() {
	byte aBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3};
	byte bBytes[] = {10, 20, 30, 40, 50, 60, 70, 10, 20, 30};
	int aSign = -1;
	int bSign = 1;
	byte rBytes[] = {-11, -41, -101, 54, -97, -52, -77, -41, 44, -86, -106, -5, -29, 85, 116, 51, -101, -121, -90};
	BigInteger aNumber = new BigInteger(aSign, aBytes);
	BigInteger bNumber = new BigInteger(bSign, bBytes);
	BigInteger result = aNumber.multiply(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());
	}

	/**
	* Multiply two positive numbers of different length.
	* The first is longer.
	*/
	@TestTargetNew(
	level = TestLevel.PARTIAL_COMPLETE,
	notes = "This is a complete subset of tests for multiply method.",
	method = "multiply",
	args = {java.math.BigInteger.class}
	)
	public void testCase3() {
	byte aBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 1, 2, 3, 4, 5};
	byte bBytes[] = {10, 20, 30, 40, 50, 60, 70, 10, 20, 30};
	int aSign = 1;
	int bSign = 1;
	byte rBytes[] = {10, 40, 100, -55, 96, 51, 76, 40, -45, 85, 115, 44, -127,
	115, -21, -62, -15, 85, 64, -87, -2, -36, -36, -106};
	BigInteger aNumber = new BigInteger(aSign, aBytes);
	BigInteger bNumber = new BigInteger(bSign, bBytes);
	BigInteger result = aNumber.multiply(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());
	}

	/**
	* Multiply two positive numbers of different length.
	* The second is longer.
	*/
	@TestTargetNew(
	level = TestLevel.PARTIAL_COMPLETE,
	notes = "This is a complete subset of tests for multiply method.",
	method = "multiply",
	args = {java.math.BigInteger.class}
	)
	public void testCase4() {
	byte aBytes[] = {10, 20, 30, 40, 50, 60, 70, 10, 20, 30};
	byte bBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 1, 2, 3, 4, 5};
	int aSign = 1;
	int bSign = 1;
	byte rBytes[] = {10, 40, 100, -55, 96, 51, 76, 40, -45, 85, 115, 44, -127,
	115, -21, -62, -15, 85, 64, -87, -2, -36, -36, -106};
	BigInteger aNumber = new BigInteger(aSign, aBytes);
	BigInteger bNumber = new BigInteger(bSign, bBytes);
	BigInteger result = aNumber.multiply(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());
	}

	/**
	* Multiply two numbers of different length and different signs.
	* The first is positive.
	* The first is longer.
	*/
	@TestTargetNew(
	level = TestLevel.PARTIAL_COMPLETE,
	notes = "This is a complete subset of tests for multiply method.",
	method = "multiply",
	args = {java.math.BigInteger.class}
	)
	public void testCase5() {
	byte aBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 1, 2, 3, 4, 5};
	byte bBytes[] = {10, 20, 30, 40, 50, 60, 70, 10, 20, 30};
	int aSign = 1;
	int bSign = -1;
	byte rBytes[] = {-11, -41, -101, 54, -97, -52, -77, -41, 44, -86, -116, -45, 126,
	-116, 20, 61, 14, -86, -65, 86, 1, 35, 35, 106};
	BigInteger aNumber = new BigInteger(aSign, aBytes);
	BigInteger bNumber = new BigInteger(bSign, bBytes);
	BigInteger result = aNumber.multiply(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());
	}

	/**
	* Multiply two numbers of different length and different signs.
	* The first is positive.
	* The second is longer.
	*/
	@TestTargetNew(
	level = TestLevel.PARTIAL_COMPLETE,
	notes = "This is a complete subset of tests for multiply method.",
	method = "multiply",
	args = {java.math.BigInteger.class}
	)
	public void testCase6() {
	byte aBytes[] = {10, 20, 30, 40, 50, 60, 70, 10, 20, 30};
	byte bBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 1, 2, 3, 4, 5};
	int aSign = 1;
	int bSign = -1;
	byte rBytes[] = {-11, -41, -101, 54, -97, -52, -77, -41, 44, -86, -116, -45, 126,
	-116, 20, 61, 14, -86, -65, 86, 1, 35, 35, 106};
	BigInteger aNumber = new BigInteger(aSign, aBytes);
	BigInteger bNumber = new BigInteger(bSign, bBytes);
	BigInteger result = aNumber.multiply(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());
	}

	/**
	* Multiply a number by zero.
	*/
	@TestTargetNew(
	level = TestLevel.PARTIAL_COMPLETE,
	notes = "This is a complete subset of tests for multiply method.",
	method = "multiply",
	args = {java.math.BigInteger.class}
	)
	public void testCase7() {
	byte aBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 1, 2, 3, 4, 5};
	byte bBytes[] = {0};
	int aSign = 1;
	int bSign = 0;
	byte rBytes[] = {0};
	BigInteger aNumber = new BigInteger(aSign, aBytes);
	BigInteger bNumber = new BigInteger(bSign, bBytes);
	BigInteger result = aNumber.multiply(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", 0, result.signum());
	}

	/**
	* Multiply a number by ZERO.
	*/
	@TestTargetNew(
	level = TestLevel.PARTIAL_COMPLETE,
	notes = "This is a complete subset of tests for multiply method.",
	method = "multiply",
	args = {java.math.BigInteger.class}
	)
	public void testCase8() {
	byte aBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 1, 2, 3, 4, 5};
	int aSign = 1;
	byte rBytes[] = {0};
	BigInteger aNumber = new BigInteger(aSign, aBytes);
	BigInteger bNumber = BigInteger.ZERO;
	BigInteger result = aNumber.multiply(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", 0, result.signum());
	}

	/**
	* Multiply a positive number by ONE.
	*/
	@TestTargetNew(
	level = TestLevel.PARTIAL_COMPLETE,
	notes = "This is a complete subset of tests for multiply method.",
	method = "multiply",
	args = {java.math.BigInteger.class}
	)
	public void testCase9() {
	byte aBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 1, 2, 3, 4, 5};
	int aSign = 1;
	byte rBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 1, 2, 3, 4, 5};
	BigInteger aNumber = new BigInteger(aSign, aBytes);
	BigInteger bNumber = BigInteger.ONE;
	BigInteger result = aNumber.multiply(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());
	}

	/**
	* Multiply a negative number by ONE.
	*/
	@TestTargetNew(
	level = TestLevel.PARTIAL_COMPLETE,
	notes = "This is a complete subset of tests for multiply method.",
	method = "multiply",
	args = {java.math.BigInteger.class}
	)
	public void testCase10() {
	byte aBytes[] = {1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 1, 2, 3, 4, 5};
	int aSign = -1;
	byte rBytes[] = {-2, -3, -4, -5, -6, -7, -8, -2, -3, -4, -2, -3, -4, -5, -5};
	BigInteger aNumber = new BigInteger(aSign, aBytes);
	BigInteger bNumber = BigInteger.ONE;
	BigInteger result = aNumber.multiply(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());
	}

	/**
	* Multiply two numbers of 4 bytes length.
	*/
	@TestTargetNew(
	level = TestLevel.PARTIAL_COMPLETE,
	notes = "This is a complete subset of tests for multiply method.",
	method = "multiply",
	args = {java.math.BigInteger.class}
	)
	public void testIntbyInt1() {
	byte aBytes[] = {10, 20, 30, 40};
	byte bBytes[] = {1, 2, 3, 4};
	int aSign = 1;
	int bSign = -1;
	byte rBytes[] = {-11, -41, -101, 55, 5, 15, 96};
	BigInteger aNumber = new BigInteger(aSign, aBytes);
	BigInteger bNumber = new BigInteger(bSign, bBytes);
	BigInteger result = aNumber.multiply(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());
	}

	/**
	* Multiply two numbers of 4 bytes length.
	*/
	@TestTargetNew(
	level = TestLevel.PARTIAL_COMPLETE,
	notes = "This is a complete subset of tests for multiply method.",
	method = "multiply",
	args = {java.math.BigInteger.class}
	)
	public void testIntbyInt2() {
	byte aBytes[] = {-1, -1, -1, -1};
	byte bBytes[] = {-1, -1, -1, -1};
	int aSign = 1;
	int bSign = 1;
	byte rBytes[] = {0, -1, -1, -1, -2, 0, 0, 0, 1};
	BigInteger aNumber = new BigInteger(aSign, aBytes);
	BigInteger bNumber = new BigInteger(bSign, bBytes);
	BigInteger result = aNumber.multiply(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());
	}

	/**
	* Negative exponent.
	*/
	@TestTargetNew(
	level = TestLevel.PARTIAL_COMPLETE,
	notes = "This is a complete subset of tests for pow method.",
	method = "pow",
	args = {int.class}
	)
	public void testPowException() {
	byte aBytes[] = {1, 2, 3, 4, 5, 6, 7};
	int aSign = 1;
	int exp = -5;
	BigInteger aNumber = new BigInteger(aSign, aBytes);
	try {
	aNumber.pow(exp);
	fail("ArithmeticException has not been caught");
	} catch (ArithmeticException e) {
	assertEquals("Improper exception message", "Negative exponent", e.getMessage());
	}
	}

	/**
	* Exponentiation of a negative number to an odd exponent.
	*/
	@TestTargetNew(
	level = TestLevel.PARTIAL_COMPLETE,
	notes = "This is a complete subset of tests for pow method.",
	method = "pow",
	args = {int.class}
	)
	public void testPowNegativeNumToOddExp() {
	byte aBytes[] = {50, -26, 90, 69, 120, 32, 63, -103, -14, 35};
	int aSign = -1;
	int exp = 5;
	byte rBytes[] = {-21, -94, -42, -15, -127, 113, -50, -88, 115, -35, 3,
	59, -92, 111, -75, 103, -42, 41, 34, -114, 99, -32, 105, -59, 127,
	45, 108, 74, -93, 105, 33, 12, -5, -20, 17, -21, -119, -127, -115,
	27, -122, 26, -67, 109, -125, 16, 91, -70, 109};
	BigInteger aNumber = new BigInteger(aSign, aBytes);
	BigInteger result = aNumber.pow(exp);
	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());
	}

	/**
	* Exponentiation of a negative number to an even exponent.
	*/
	@TestTargetNew(
	level = TestLevel.PARTIAL_COMPLETE,
	notes = "This is a complete subset of tests for pow method.",
	method = "pow",
	args = {int.class}
	)
	public void testPowNegativeNumToEvenExp() {
	byte aBytes[] = {50, -26, 90, 69, 120, 32, 63, -103, -14, 35};
	int aSign = -1;
	int exp = 4;
	byte rBytes[] = {102, 107, -122, -43, -52, -20, -27, 25, -9, 88, -13,
	75, 78, 81, -33, -77, 39, 27, -37, 106, 121, -73, 108, -47, -101,
	80, -25, 71, 13, 94, -7, -33, 1, -17, -65, -70, -61, -3, -47};
	BigInteger aNumber = new BigInteger(aSign, aBytes);
	BigInteger result = aNumber.pow(exp);
	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());
	}

	/**
	* Exponentiation of a negative number to zero exponent.
	*/
	@TestTargetNew(
	level = TestLevel.PARTIAL_COMPLETE,
	notes = "This is a complete subset of tests for pow method.",
	method = "pow",
	args = {int.class}
	)
	public void testPowNegativeNumToZeroExp() {
	byte aBytes[] = {50, -26, 90, 69, 120, 32, 63, -103, -14, 35};
	int aSign = -1;
	int exp = 0;
	byte rBytes[] = {1};
	BigInteger aNumber = new BigInteger(aSign, aBytes);
	BigInteger result = aNumber.pow(exp);
	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());
	}

	/**
	* Exponentiation of a positive number.
	*/
	@TestTargetNew(
	level = TestLevel.PARTIAL_COMPLETE,
	notes = "This is a complete subset of tests for pow method.",
	method = "pow",
	args = {int.class}
	)
	public void testPowPositiveNum() {
	byte aBytes[] = {50, -26, 90, 69, 120, 32, 63, -103, -14, 35};
	int aSign = 1;
	int exp = 5;
	byte rBytes[] = {20, 93, 41, 14, 126, -114, 49, 87, -116, 34, -4, -60,
	91, -112, 74, -104, 41, -42, -35, 113, -100, 31, -106, 58, -128,
	-46, -109, -75, 92, -106, -34, -13, 4, 19, -18, 20, 118, 126, 114,
	-28, 121, -27, 66, -110, 124, -17, -92, 69, -109};
	BigInteger aNumber = new BigInteger(aSign, aBytes);
	BigInteger result = aNumber.pow(exp);
	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());
	}

	/**
	* Exponentiation of a negative number to zero exponent.
	*/
	@TestTargetNew(
	level = TestLevel.PARTIAL_COMPLETE,
	notes = "This is a complete subset of tests for pow method.",
	method = "pow",
	args = {int.class}
	)
	public void testPowPositiveNumToZeroExp() {
	byte aBytes[] = {50, -26, 90, 69, 120, 32, 63, -103, -14, 35};
	int aSign = 1;
	int exp = 0;
	byte rBytes[] = {1};
	BigInteger aNumber = new BigInteger(aSign, aBytes);
	BigInteger result = aNumber.pow(exp);
	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());
	}
	}