| /* |
| * Copyright (c) 2013, 2019, 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. |
| */ |
| |
| /* |
| * @test |
| * @library /test/lib |
| * @ignore This test has huge memory requirements |
| * @run main/timeout=180/othervm -Xmx8g SymmetricRangeTests |
| * @bug 6910473 8021204 8021203 9005933 8074460 8078672 |
| * @summary Test range of BigInteger values (use -Dseed=X to set PRNG seed) |
| * @author Dmitry Nadezhin |
| * @key randomness |
| */ |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.util.Arrays; |
| import java.math.BigInteger; |
| import java.util.Random; |
| import jdk.test.lib.RandomFactory; |
| |
| public class SymmetricRangeTests { |
| |
| private static final BigInteger MAX_VALUE = makeMaxValue(); |
| private static final BigInteger MIN_VALUE = MAX_VALUE.negate(); |
| |
| private static BigInteger makeMaxValue() { |
| byte[] ba = new byte[1 << 28]; |
| Arrays.fill(ba, (byte) 0xFF); |
| ba[0] = (byte) 0x7F; |
| return new BigInteger(ba); |
| } |
| |
| private static void check(String msg, BigInteger actual, BigInteger expected) { |
| if (!actual.equals(expected)) { |
| throw new RuntimeException(msg + ".bitLength()=" + actual.bitLength()); |
| } |
| } |
| |
| private static void check(String msg, double actual, double expected) { |
| if (actual != expected) { |
| throw new RuntimeException(msg + "=" + actual); |
| } |
| } |
| |
| private static void check(String msg, float actual, float expected) { |
| if (actual != expected) { |
| throw new RuntimeException(msg + "=" + actual); |
| } |
| } |
| |
| private static void check(String msg, long actual, long expected) { |
| if (actual != expected) { |
| throw new RuntimeException(msg + "=" + actual); |
| } |
| } |
| |
| private static void check(String msg, int actual, int expected) { |
| if (actual != expected) { |
| throw new RuntimeException(msg + "=" + actual); |
| } |
| } |
| |
| private static void testOverflowInMakePositive() { |
| System.out.println("Testing overflow in BigInteger.makePositive"); |
| byte[] ba = new byte[Integer.MAX_VALUE - 2]; |
| ba[0] = (byte) 0x80; |
| try { |
| BigInteger actual = new BigInteger(ba); |
| throw new RuntimeException("new BigInteger(ba).bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| } |
| |
| private static void testBug8021204() { |
| System.out.println("Testing Bug 8021204"); |
| StringBuilder sb = new StringBuilder(); |
| sb.append('1'); |
| for (int i = 0; i < (1 << 30) - 1; i++) { |
| sb.append('0'); |
| } |
| sb.append('1'); |
| String s = sb.toString(); |
| sb = null; |
| try { |
| BigInteger actual = new BigInteger(s, 16); |
| throw new RuntimeException("new BigInteger(\"1000...001\").bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| } |
| |
| private static void testOverflowInBitSieve() { |
| System.out.println("Testing overflow in BitSieve.sieveSingle"); |
| int bitLength = (5 << 27) - 1; |
| try { |
| Random random = RandomFactory.getRandom(); |
| BigInteger actual = new BigInteger(bitLength, 0, random); |
| throw new RuntimeException("new BigInteger(bitLength, 0, null).bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| try { |
| BigInteger bi = BigInteger.ONE.shiftLeft(bitLength - 1).subtract(BigInteger.ONE); |
| BigInteger actual = bi.nextProbablePrime(); |
| throw new RuntimeException("bi.nextActualPrime().bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| } |
| |
| private static void testAdd() { |
| System.out.println("Testing BigInteger.add"); |
| try { |
| BigInteger actual = MAX_VALUE.add(BigInteger.ONE); |
| throw new RuntimeException("BigInteger.MAX_VALUE.add(BigInteger.ONE).bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| } |
| |
| private static void testSubtract() { |
| System.out.println("Testing BigInteger.subtract"); |
| try { |
| BigInteger actual = MIN_VALUE.subtract(BigInteger.ONE); |
| throw new RuntimeException("BigInteger.MIN_VALUE.subtract(BigInteger.ONE).bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| } |
| |
| private static void testMultiply() { |
| System.out.println("Testing BigInteger.multiply"); |
| int py = 2000; |
| int px = Integer.MAX_VALUE - py; |
| BigInteger x = BigInteger.ONE.shiftLeft(px); |
| BigInteger y = BigInteger.ONE.shiftLeft(py); |
| try { |
| BigInteger actual = x.multiply(y); |
| throw new RuntimeException("(1 << " + px + " ) * (1 << " + py + ").bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| } |
| |
| private static void testDivide() { |
| System.out.println("Testing BigInteger.divide"); |
| check("BigInteger.MIN_VALUE.divide(BigInteger.valueOf(-1))", |
| MIN_VALUE.divide(BigInteger.valueOf(-1)), MAX_VALUE); |
| check("BigInteger.MIN_VALUE.divide(BigInteger.ONE)", |
| MIN_VALUE.divide(BigInteger.ONE), MIN_VALUE); |
| } |
| |
| private static void testDivideAndRemainder(String msg, BigInteger dividend, BigInteger divisor, |
| BigInteger expectedQuotent, BigInteger expectedRemainder) { |
| BigInteger[] qr = dividend.divideAndRemainder(divisor); |
| check(msg + "[0]", qr[0], expectedQuotent); |
| check(msg + "[1]", qr[1], expectedRemainder); |
| } |
| |
| private static void testDivideAndRemainder() { |
| System.out.println("Testing BigInteger.divideAndRemainder"); |
| testDivideAndRemainder("BigInteger.MIN_VALUE.divideAndRemainder(BigInteger.valueOf(-1))", |
| MIN_VALUE, BigInteger.valueOf(-1), |
| MAX_VALUE, |
| BigInteger.ZERO); |
| } |
| |
| private static void testBug9005933() { |
| System.out.println("Testing Bug 9005933"); |
| int dividendPow = 2147483646; |
| int divisorPow = 1568; |
| BigInteger dividend = BigInteger.ONE.shiftLeft(dividendPow); |
| BigInteger divisor = BigInteger.ONE.shiftLeft(divisorPow); |
| testDivideAndRemainder("(1 << " + dividendPow + ").divideAndRemainder(1 << " + divisorPow + ")", |
| dividend, divisor, |
| BigInteger.ONE.shiftLeft(dividendPow - divisorPow), |
| BigInteger.ZERO); |
| } |
| |
| private static void testRemainder() { |
| System.out.println("Testing BigInteger.remainder"); |
| check("BigInteger.MIN_VALUE.remainder(BigInteger.valueOf(-1))", |
| MIN_VALUE.remainder(BigInteger.valueOf(-1)), BigInteger.ZERO); |
| } |
| |
| private static void testPow() { |
| System.out.println("Testing BigInteger.pow"); |
| check("BigInteger.MIN_VALUE.pow(1)", |
| MIN_VALUE.pow(1), MIN_VALUE); |
| try { |
| BigInteger actual = BigInteger.valueOf(4).pow(Integer.MAX_VALUE); |
| throw new RuntimeException("BigInteger.valueOf(4).pow(Integer.MAX_VALUE).bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| } |
| |
| private static void testGcd() { |
| System.out.println("Testing BigInteger.gcd"); |
| check("BigInteger.MIN_VALUE.gcd(BigInteger.MIN_VALUE)", |
| MIN_VALUE.gcd(MIN_VALUE), MAX_VALUE); |
| check("BigInteger.MIN_VALUE.gcd(BigInteger.ZERO)", |
| MIN_VALUE.gcd(BigInteger.ZERO), MAX_VALUE); |
| check("BigInteger.ZERO.gcd(MIN_VALUE)", |
| BigInteger.ZERO.gcd(MIN_VALUE), MAX_VALUE); |
| } |
| |
| private static void testAbs() { |
| System.out.println("Testing BigInteger.abs"); |
| check("BigInteger.MIN_VALUE.abs()", |
| MIN_VALUE.abs(), MAX_VALUE); |
| check("BigInteger.MAX_VALUE.abs()", |
| MAX_VALUE.abs(), MAX_VALUE); |
| } |
| |
| private static void testNegate() { |
| System.out.println("Testing BigInteger.negate"); |
| check("BigInteger.MIN_VALUE.negate()", |
| MIN_VALUE.negate(), MAX_VALUE); |
| check("BigInteger.MAX_VALUE.negate()", |
| MAX_VALUE.negate(), MIN_VALUE); |
| } |
| |
| private static void testMod() { |
| System.out.println("Testing BigInteger.mod"); |
| check("BigInteger.MIN_VALUE.mod(BigInteger.MAX_VALUE)", |
| MIN_VALUE.mod(MAX_VALUE), BigInteger.ZERO); |
| check("BigInteger.MAX_VALUE.mod(BigInteger.MAX_VALUE)", |
| MIN_VALUE.mod(MAX_VALUE), BigInteger.ZERO); |
| } |
| |
| private static void testModPow() { |
| System.out.println("Testing BigInteger.modPow"); |
| BigInteger x = BigInteger.valueOf(3); |
| BigInteger m = BigInteger.valueOf(-4).subtract(MIN_VALUE); |
| check("BigInteger.valueOf(3).modPow(BigInteger.ONE, m)", |
| x.modPow(BigInteger.ONE, m), x); |
| } |
| |
| // slow test |
| private static void testModInverse() { |
| System.out.println("Testing BigInteger.modInverse"); |
| check("BigInteger.MIN_VALUE.modInverse(BigInteger.MAX_VALUE)", |
| MIN_VALUE.modInverse(MAX_VALUE), MAX_VALUE.subtract(BigInteger.ONE)); |
| } |
| |
| private static void testShiftLeft() { |
| System.out.println("Testing BigInteger.shiftLeft"); |
| try { |
| BigInteger actual = MIN_VALUE.shiftLeft(1); |
| throw new RuntimeException("BigInteger.MIN_VALUE.shiftLeft(1).bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| try { |
| BigInteger actual = MAX_VALUE.shiftLeft(1); |
| throw new RuntimeException("BigInteger.MAX_VALUE.shiftLeft(1).bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| } |
| |
| private static void testShiftRight() { |
| System.out.println("Testing BigInteger.shiftRight"); |
| try { |
| BigInteger actual = MIN_VALUE.shiftRight(-1); |
| throw new RuntimeException("BigInteger.MIN_VALUE.shiftRight(-1).bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| try { |
| BigInteger actual = MAX_VALUE.shiftRight(-1); |
| throw new RuntimeException("BigInteger.MAX_VALUE.shiftRight(-1).bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| } |
| |
| private static void testAnd() { |
| System.out.println("Testing BigInteger.and"); |
| check("BigInteger.MIN_VALUE.and(BigInteger.MIN_VALUE)", |
| MIN_VALUE.and(MIN_VALUE), MIN_VALUE); |
| check("BigInteger.MAX_VALUE.and(BigInteger.MAX_VALUE)", |
| MAX_VALUE.and(MAX_VALUE), MAX_VALUE); |
| check("BigInteger.MIN_VALUE.and(BigInteger.MAX_VALUE)", |
| MIN_VALUE.and(MAX_VALUE), BigInteger.ONE); |
| try { |
| BigInteger actual = MIN_VALUE.and(BigInteger.valueOf(-2)); |
| throw new RuntimeException("BigInteger.MIN_VALUE.and(-2)).bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| } |
| |
| private static void testOr() { |
| System.out.println("Testing BigInteger.or"); |
| check("BigInteger.MIN_VALUE.or(BigInteger.MIN_VALUE)", |
| MIN_VALUE.or(MIN_VALUE), MIN_VALUE); |
| check("BigInteger.MAX_VALUE.or(BigInteger.MAX_VALUE)", |
| MAX_VALUE.or(MAX_VALUE), MAX_VALUE); |
| check("BigInteger.MIN_VALUE.and(BigInteger.MAX_VALUE)", |
| MIN_VALUE.or(MAX_VALUE), BigInteger.valueOf(-1)); |
| } |
| |
| private static void testXor() { |
| System.out.println("Testing BigInteger.xor"); |
| check("BigInteger.MIN_VALUE.xor(BigInteger.MIN_VALUE)", |
| MIN_VALUE.xor(MIN_VALUE), BigInteger.ZERO); |
| check("BigInteger.MAX_VALUE.xor(BigInteger.MAX_VALUE)", |
| MAX_VALUE.xor(MAX_VALUE), BigInteger.ZERO); |
| check("BigInteger.MIN_VALUE.xor(BigInteger.MAX_VALUE)", |
| MIN_VALUE.xor(MAX_VALUE), BigInteger.valueOf(-2)); |
| try { |
| BigInteger actual = MIN_VALUE.xor(BigInteger.ONE); |
| throw new RuntimeException("BigInteger.MIN_VALUE.xor(BigInteger.ONE)).bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| } |
| |
| private static void testNot() { |
| System.out.println("Testing BigInteger.not"); |
| check("BigInteger.MIN_VALUE.not()", |
| MIN_VALUE.not(), MAX_VALUE.subtract(BigInteger.ONE)); |
| try { |
| BigInteger actual = MAX_VALUE.not(); |
| throw new RuntimeException("BigInteger.MAX_VALUE.not()).bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| } |
| |
| private static void testSetBit() { |
| System.out.println("Testing BigInteger.setBit"); |
| check("BigInteger.MIN_VALUE.setBit(" + Integer.MAX_VALUE + ")", |
| MIN_VALUE.setBit(Integer.MAX_VALUE), MIN_VALUE); |
| try { |
| BigInteger actual = MAX_VALUE.setBit(Integer.MAX_VALUE); |
| throw new RuntimeException("BigInteger.MAX_VALUE.setBit(" + Integer.MAX_VALUE + ").bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| } |
| |
| private static void testClearBit() { |
| System.out.println("Testing BigInteger.clearBit"); |
| check("BigInteger.MAX_VALUE.clearBit(" + Integer.MAX_VALUE + ")", |
| MAX_VALUE.clearBit(Integer.MAX_VALUE), MAX_VALUE); |
| try { |
| BigInteger actual = MIN_VALUE.clearBit(Integer.MAX_VALUE); |
| throw new RuntimeException("BigInteger.MIN_VALUE.clearBit(" + Integer.MAX_VALUE + ").bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| try { |
| BigInteger actual = MIN_VALUE.clearBit(0); |
| throw new RuntimeException("BigInteger.MIN_VALUE.clearBit(0).bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| } |
| |
| private static void testFlipBit() { |
| System.out.println("Testing BigInteger.flipBit"); |
| try { |
| BigInteger actual = MIN_VALUE.flipBit(Integer.MAX_VALUE); |
| throw new RuntimeException("BigInteger.MIN_VALUE.flipBit(" + Integer.MAX_VALUE + ").bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| try { |
| BigInteger actual = MIN_VALUE.flipBit(0); |
| throw new RuntimeException("BigInteger.MIN_VALUE.flipBit(0).bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| try { |
| BigInteger actual = MAX_VALUE.flipBit(Integer.MAX_VALUE); |
| throw new RuntimeException("BigInteger.MAX_VALUE.flipBit(" + Integer.MAX_VALUE + ").bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| } |
| |
| private static void testGetLowestSetBit() { |
| System.out.println("Testing BigInteger.getLowestSetBit"); |
| check("BigInteger.MIN_VALUE.getLowestSetBit()", |
| MIN_VALUE.getLowestSetBit(), 0); |
| check("BigInteger.MAX_VALUE.getLowestSetBit()", |
| MAX_VALUE.getLowestSetBit(), 0); |
| } |
| |
| private static void testBitLength() { |
| System.out.println("Testing BigInteger.bitLength"); |
| check("BigInteger.MIN_NEXT.bitLength()", |
| MIN_VALUE.bitLength(), Integer.MAX_VALUE); |
| check("BigInteger.MAX_VALUE.bitLength()", |
| MAX_VALUE.bitLength(), Integer.MAX_VALUE); |
| } |
| |
| private static void testBitCount() { |
| System.out.println("Testing BigInteger.bitCount"); |
| check("BigInteger.MIN_VALUE.bitCount()", |
| MIN_VALUE.bitCount(), Integer.MAX_VALUE - 1); |
| check("BigInteger.MAX_VALUE.bitCount()", |
| MAX_VALUE.bitCount(), Integer.MAX_VALUE); |
| } |
| |
| private static void testToString(String msg, int radix, BigInteger bi, int length, String startsWith, char c) { |
| String s = bi.toString(radix); |
| if (s.length() != length) { |
| throw new RuntimeException(msg + ".length=" + s.length()); |
| } |
| if (!s.startsWith(startsWith)) { |
| throw new RuntimeException(msg + "[0]=" + s.substring(0, startsWith.length())); |
| } |
| for (int i = startsWith.length(); i < s.length(); i++) { |
| if (s.charAt(i) != c) { |
| throw new RuntimeException(msg + "[" + i + "]='" + s.charAt(i) + "'"); |
| } |
| } |
| } |
| |
| private static void testToString() { |
| System.out.println("Testing BigInteger.toString"); |
| testToString("BigInteger.MIN_VALUE.toString(16)=", 16, |
| BigInteger.valueOf(-1).shiftLeft(Integer.MAX_VALUE - 1), |
| (1 << 29) + 1, "-4", '0'); |
| } |
| |
| private static void testToByteArrayWithConstructor(String msg, BigInteger bi, int length, byte msb, byte b, byte lsb) { |
| byte[] ba = bi.toByteArray(); |
| if (ba.length != length) { |
| throw new RuntimeException(msg + ".length=" + ba.length); |
| } |
| if (ba[0] != msb) { |
| throw new RuntimeException(msg + "[0]=" + ba[0]); |
| } |
| for (int i = 1; i < ba.length - 1; i++) { |
| if (ba[i] != b) { |
| throw new RuntimeException(msg + "[" + i + "]=" + ba[i]); |
| } |
| } |
| if (ba[ba.length - 1] != lsb) { |
| throw new RuntimeException(msg + "[" + (ba.length - 1) + "]=" + ba[ba.length - 1]); |
| } |
| BigInteger actual = new BigInteger(ba); |
| if (!actual.equals(bi)) { |
| throw new RuntimeException(msg + ".bitLength()=" + actual.bitLength()); |
| } |
| } |
| |
| private static void testToByteArrayWithConstructor() { |
| System.out.println("Testing BigInteger.toByteArray with constructor"); |
| testToByteArrayWithConstructor("BigInteger.MIN_VALUE.toByteArray()", |
| MIN_VALUE, (1 << 28), (byte) 0x80, (byte) 0x00, (byte) 0x01); |
| testToByteArrayWithConstructor("BigInteger.MAX_VALUE.toByteArray()", |
| MAX_VALUE, (1 << 28), (byte) 0x7f, (byte) 0xff, (byte) 0xff); |
| |
| byte[] ba = new byte[1 << 28]; |
| ba[0] = (byte) 0x80; |
| try { |
| BigInteger actual = new BigInteger(-1, ba); |
| throw new RuntimeException("new BigInteger(-1, ba).bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| try { |
| BigInteger actual = new BigInteger(1, ba); |
| throw new RuntimeException("new BigInteger(1, ba).bitLength()=" + actual.bitLength()); |
| } catch (ArithmeticException e) { |
| // expected |
| } |
| } |
| |
| private static void testIntValue() { |
| System.out.println("Testing BigInteger.intValue"); |
| check("BigInteger.MIN_VALUE.intValue()", |
| MIN_VALUE.intValue(), 1); |
| check("BigInteger.MAX_VALUE.floatValue()", |
| MAX_VALUE.intValue(), -1); |
| } |
| |
| private static void testLongValue() { |
| System.out.println("Testing BigInteger.longValue"); |
| check("BigInteger.MIN_VALUE.longValue()", |
| MIN_VALUE.longValue(), 1L); |
| check("BigInteger.MAX_VALUE.longValue()", |
| MAX_VALUE.longValue(), -1L); |
| } |
| |
| private static void testFloatValue() { |
| System.out.println("Testing BigInteger.floatValue, Bug 8021203"); |
| check("BigInteger.MIN_VALUE_.floatValue()", |
| MIN_VALUE.floatValue(), Float.NEGATIVE_INFINITY); |
| check("BigInteger.MAX_VALUE.floatValue()", |
| MAX_VALUE.floatValue(), Float.POSITIVE_INFINITY); |
| } |
| |
| private static void testDoubleValue() { |
| System.out.println("Testing BigInteger.doubleValue, Bug 8021203"); |
| check("BigInteger.MIN_VALUE.doubleValue()", |
| MIN_VALUE.doubleValue(), Double.NEGATIVE_INFINITY); |
| check("BigInteger.MAX_VALUE.doubleValue()", |
| MAX_VALUE.doubleValue(), Double.POSITIVE_INFINITY); |
| } |
| |
| private static void testSerialization(String msg, BigInteger bi) { |
| try { |
| ByteArrayOutputStream baOut = new ByteArrayOutputStream((1 << 28) + 1000); |
| ObjectOutputStream out = new ObjectOutputStream(baOut); |
| out.writeObject(bi); |
| out.close(); |
| out = null; |
| byte[] ba = baOut.toByteArray(); |
| baOut = null; |
| ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(ba)); |
| BigInteger actual = (BigInteger) in.readObject(); |
| if (!actual.equals(bi)) { |
| throw new RuntimeException(msg + ".bitLength()=" + actual.bitLength()); |
| } |
| } catch (IOException | ClassNotFoundException e) { |
| throw new RuntimeException(msg + " raised exception ", e); |
| } |
| } |
| |
| private static void testSerialization() { |
| System.out.println("Testing BigInteger serialization"); |
| testSerialization("BigInteger.MIN_VALUE.intValue()", |
| MIN_VALUE); |
| testSerialization("BigInteger.MAX_VALUE.floatValue()", |
| MAX_VALUE); |
| } |
| |
| private static void testLongValueExact() { |
| System.out.println("Testing BigInteger.longValueExact"); |
| try { |
| long actual = MIN_VALUE.longValueExact(); |
| throw new RuntimeException("BigInteger.MIN_VALUE.longValueExact()= " + actual); |
| } catch (ArithmeticException e) { |
| // excpected |
| } |
| try { |
| long actual = MAX_VALUE.longValueExact(); |
| throw new RuntimeException("BigInteger.MAX_VALUE.longValueExact()= " + actual); |
| } catch (ArithmeticException e) { |
| // excpected |
| } |
| } |
| |
| private static void testIntValueExact() { |
| System.out.println("Testing BigInteger.intValueExact"); |
| try { |
| long actual = MIN_VALUE.intValueExact(); |
| throw new RuntimeException("BigInteger.MIN_VALUE.intValueExact()= " + actual); |
| } catch (ArithmeticException e) { |
| // excpected |
| } |
| try { |
| long actual = MAX_VALUE.intValueExact(); |
| throw new RuntimeException("BigInteger.MAX_VALUE.intValueExact()= " + actual); |
| } catch (ArithmeticException e) { |
| // excpected |
| } |
| } |
| |
| private static void testShortValueExact() { |
| System.out.println("Testing BigInteger.shortValueExact"); |
| try { |
| long actual = MIN_VALUE.shortValueExact(); |
| throw new RuntimeException("BigInteger.MIN_VALUE.shortValueExact()= " + actual); |
| } catch (ArithmeticException e) { |
| // excpected |
| } |
| try { |
| long actual = MAX_VALUE.shortValueExact(); |
| throw new RuntimeException("BigInteger.MAX_VALUE.shortValueExact()= " + actual); |
| } catch (ArithmeticException e) { |
| // excpected |
| } |
| } |
| |
| private static void testByteValueExact() { |
| System.out.println("Testing BigInteger.byteValueExact"); |
| try { |
| long actual = MIN_VALUE.byteValueExact(); |
| throw new RuntimeException("BigInteger.MIN_VALUE.byteValueExact()= " + actual); |
| } catch (ArithmeticException e) { |
| // excpected |
| } |
| try { |
| long actual = MAX_VALUE.byteValueExact(); |
| throw new RuntimeException("BigInteger.MAX_VALUE.byteValueExact()= " + actual); |
| } catch (ArithmeticException e) { |
| // excpected |
| } |
| } |
| |
| public static void main(String... args) { |
| testOverflowInMakePositive(); |
| testBug8021204(); |
| testOverflowInBitSieve(); |
| testAdd(); |
| testSubtract(); |
| testMultiply(); |
| testDivide(); |
| testDivideAndRemainder(); |
| testBug9005933(); |
| testRemainder(); |
| testPow(); |
| testGcd(); |
| testAbs(); |
| testNegate(); |
| testMod(); |
| testModPow(); |
| // testModInverse(); |
| testShiftLeft(); |
| testShiftRight(); |
| testAnd(); |
| testOr(); |
| testXor(); |
| testNot(); |
| testSetBit(); |
| testClearBit(); |
| testFlipBit(); |
| testGetLowestSetBit(); |
| testBitLength(); |
| testBitCount(); |
| testToString(); |
| testToByteArrayWithConstructor(); |
| testIntValue(); |
| testLongValue(); |
| testFloatValue(); |
| testDoubleValue(); |
| testSerialization(); |
| testLongValueExact(); |
| testIntValueExact(); |
| testShortValueExact(); |
| testByteValueExact(); |
| } |
| } |
