Java Code Examples for java.math.BigInteger#flipBit()
The following examples show how to use
java.math.BigInteger#flipBit() .
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Example 1
Source File: BigIntegerDemoUnitTest.java From tutorials with MIT License | 6 votes |
@Test public void givenBigIntegers_whenPerformingBitManipulations_thenExpectedResult() { BigInteger i = new BigInteger("1018"); int bitCount = i.bitCount(); int bitLength = i.bitLength(); int getLowestSetBit = i.getLowestSetBit(); boolean testBit3 = i.testBit(3); BigInteger setBit12 = i.setBit(12); BigInteger flipBit0 = i.flipBit(0); BigInteger clearBit3 = i.clearBit(3); assertEquals(8, bitCount); assertEquals(10, bitLength); assertEquals(1, getLowestSetBit); assertEquals(true, testBit3); assertEquals(new BigInteger("5114"), setBit12); assertEquals(new BigInteger("1019"), flipBit0); assertEquals(new BigInteger("1010"), clearBit3); }
Example 2
Source File: BigIntegerOperateBitsTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * flipBit(0) in the negative number of length 1 * with all ones in bit representation. * the resulting number's length is 2. */ public void testFlipBitNegativeInside4() { String as = "-4294967295"; String res = "-4294967296"; int number = 0; BigInteger aNumber = new BigInteger(as); BigInteger result = aNumber.flipBit(number); assertEquals(res, result.toString()); }
Example 3
Source File: BigIntegerOperateBitsTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * flipBit(int n) outside a positive number */ public void testFlipBitPositiveOutside2() { byte aBytes[] = {1, -128, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26}; int aSign = 1; int number = 191; byte rBytes[] = {0, -128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -128, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26}; BigInteger aNumber = new BigInteger(aSign, aBytes); BigInteger result = aNumber.flipBit(number); 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()); }
Example 4
Source File: BigIntegerOperateBitsTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * flipBit(int n) outside a positive number */ public void testFlipBitPositiveOutside1() { byte aBytes[] = {1, -128, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26}; int aSign = 1; int number = 150; byte rBytes[] = {64, 0, 0, 0, 0, 0, 1, -128, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26}; BigInteger aNumber = new BigInteger(aSign, aBytes); BigInteger result = aNumber.flipBit(number); 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()); }
Example 5
Source File: BigIntegerOperateBitsTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * flipBit(int n) inside a positive number */ public void testFlipBitPositiveInside2() { byte aBytes[] = {1, -128, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26}; int aSign = 1; int number = 45; byte rBytes[] = {1, -128, 56, 100, -2, -76, 89, 13, 91, 3, -15, 35, 26}; BigInteger aNumber = new BigInteger(aSign, aBytes); BigInteger result = aNumber.flipBit(number); 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()); }
Example 6
Source File: BigIntegerOperateBitsTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * flipBit(int n) inside a positive number */ public void testFlipBitPositiveInside1() { byte aBytes[] = {1, -128, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26}; int aSign = 1; int number = 15; byte rBytes[] = {1, -128, 56, 100, -2, -76, 89, 45, 91, 3, -15, -93, 26}; BigInteger aNumber = new BigInteger(aSign, aBytes); BigInteger result = aNumber.flipBit(number); 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()); }
Example 7
Source File: BigIntegerOperateBitsTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * flipBit(int n) outside a negative number */ public void testFlipBitNegativeOutside2() { byte aBytes[] = {1, -128, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26}; int aSign = -1; int number = 191; byte rBytes[] = {-1, 127, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -2, 127, -57, -101, 1, 75, -90, -46, -92, -4, 14, -36, -26}; BigInteger aNumber = new BigInteger(aSign, aBytes); BigInteger result = aNumber.flipBit(number); 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()); }
Example 8
Source File: BigIntegerOperateBitsTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * flipBit(int n) outside a negative number */ public void testFlipBitNegativeOutside1() { byte aBytes[] = {1, -128, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26}; int aSign = -1; int number = 150; byte rBytes[] = {-65, -1, -1, -1, -1, -1, -2, 127, -57, -101, 1, 75, -90, -46, -92, -4, 14, -36, -26}; BigInteger aNumber = new BigInteger(aSign, aBytes); BigInteger result = aNumber.flipBit(number); 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()); }
Example 9
Source File: BigIntegerOperateBitsTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * flipBit(0) in the negative number of length 2 * with all ones in bit representation. * the resulting number's length is 3. */ public void testFlipBitNegativeInside5() { String as = "-18446744073709551615"; String res = "-18446744073709551616"; int number = 0; BigInteger aNumber = new BigInteger(as); BigInteger result = aNumber.flipBit(number); assertEquals(res, result.toString()); }
Example 10
Source File: BigIntegerOperateBitsTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * flipBit(int n) inside a negative number with all ones in bit representation */ public void testFlipBitNegativeInside3() { String as = "-18446744073709551615"; String res = "-18446744073709551611"; int number = 2; BigInteger aNumber = new BigInteger(as); BigInteger result = aNumber.flipBit(number); assertEquals(res, result.toString()); }
Example 11
Source File: BigIntegerOperateBitsTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * flipBit(int n) inside a negative number */ public void testFlipBitNegativeInside2() { byte aBytes[] = {1, -128, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26}; int aSign = -1; int number = 45; byte rBytes[] = {-2, 127, -57, -101, 1, 75, -90, -14, -92, -4, 14, -36, -26}; BigInteger aNumber = new BigInteger(aSign, aBytes); BigInteger result = aNumber.flipBit(number); 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()); }
Example 12
Source File: BigIntegerOperateBitsTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * flipBit(int n) inside a negative number */ public void testFlipBitNegativeInside1() { byte aBytes[] = {1, -128, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26}; int aSign = -1; int number = 15; byte rBytes[] = {-2, 127, -57, -101, 1, 75, -90, -46, -92, -4, 14, 92, -26}; BigInteger aNumber = new BigInteger(aSign, aBytes); BigInteger result = aNumber.flipBit(number); 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()); }
Example 13
Source File: BigIntegerOperateBitsTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * flipBit(int n) the leftmost bit in a positive number */ public void testFlipBitLeftmostPositive() { byte aBytes[] = {1, -128, 56, 100, -15, 35, 26}; int aSign = 1; int number = 48; byte rBytes[] = {0, -128, 56, 100, -15, 35, 26}; BigInteger aNumber = new BigInteger(aSign, aBytes); BigInteger result = aNumber.flipBit(number); 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()); }
Example 14
Source File: BigIntegerOperateBitsTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * flipBit(int n) the leftmost bit in a negative number */ public void testFlipBitLeftmostNegative() { byte aBytes[] = {1, -128, 56, 100, -15, 35, 26}; int aSign = -1; int number = 48; byte rBytes[] = {-1, 127, -57, -101, 14, -36, -26, 49}; BigInteger aNumber = new BigInteger(aSign, aBytes); BigInteger result = aNumber.flipBit(number); 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()); }
Example 15
Source File: BigIntegerOperateBitsTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * flipBit(int n) outside zero */ public void testFlipBitZeroOutside2() { byte aBytes[] = {0}; int aSign = 0; int number = 63; byte rBytes[] = {0, -128, 0, 0, 0, 0, 0, 0, 0}; BigInteger aNumber = new BigInteger(aSign, aBytes); BigInteger result = aNumber.flipBit(number); byte resBytes[] = new byte[rBytes.length]; resBytes = result.toByteArray(); for(int i = 0; i < resBytes.length; i++) { assertTrue("incorrect value", resBytes[i] == rBytes[i]); } assertEquals("incorrect sign", 1, result.signum()); }
Example 16
Source File: BigIntegerOperateBitsTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * flipBit(int n) outside zero */ public void testFlipBitZeroOutside1() { byte aBytes[] = {0}; int aSign = 0; int number = 62; byte rBytes[] = {64, 0, 0, 0, 0, 0, 0, 0}; BigInteger aNumber = new BigInteger(aSign, aBytes); BigInteger result = aNumber.flipBit(number); byte resBytes[] = new byte[rBytes.length]; resBytes = result.toByteArray(); for(int i = 0; i < resBytes.length; i++) { assertTrue("incorrect value", resBytes[i] == rBytes[i]); } assertEquals("incorrect sign", 1, result.signum()); }
Example 17
Source File: BigIntegerOperateBitsTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * flipBit(int n) zero */ public void testFlipBitZero() { byte aBytes[] = {0}; int aSign = 0; int number = 0; byte rBytes[] = {1}; BigInteger aNumber = new BigInteger(aSign, aBytes); BigInteger result = aNumber.flipBit(number); 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()); }
Example 18
Source File: BigIntegerOperateBitsTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * flipBit(int n) of a negative n */ public void testFlipBitException() { byte aBytes[] = {-1, -128, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26}; int aSign = 1; int number = -7; BigInteger aNumber = new BigInteger(aSign, aBytes); try { aNumber.flipBit(number); fail("ArithmeticException has not been caught"); } catch (ArithmeticException e) { } }
Example 19
Source File: BigIntegerTarget.java From AVM with MIT License | 4 votes |
@Callable public static BigInteger flipBit(BigInteger testValue, int num) { return testValue.flipBit(num); }
Example 20
Source File: BigIntegerMutatorTest.java From pitest with Apache License 2.0 | 4 votes |
@Override BigInteger apply(BigInteger left, BigInteger right) { return left.flipBit(right.intValue()); }