Package java.math

Examples of java.math.BigInteger.bitCount()

47
48
49
50
51
52
53
54
55
56
57
  }

  // slow version used for testing
  static long gcd(long l1, long l2) {
    final BigInteger gcd = BigInteger.valueOf(l1).gcd(BigInteger.valueOf(l2));
    assert gcd.bitCount() <= 64;
    return gcd.longValue();
  }

  public void testGCD() {
    final int iters = atLeast(100);
View Full Code Here
81
82
83
84
85
86
87
88
89
90
91
        @Override
        public int hashCode()
        {
            byte[] bytes = name.toString().getBytes();
            BigInteger bigInt = new BigInteger(bytes);
            int val = bigInt.bitCount()+bigInt.intValue();
            return val+idx;
        }

        @Override
        public String toString()
View Full Code Here
34
35
36
37
38
39
40
41
42
43
44
     * bitCount() of zero.
     */
    @Test
    public void testBitCountZero() {
        BigInteger aNumber = new BigInteger("0");
        assertEquals(0, aNumber.bitCount());
    }

    /**
     * bitCount() of a negative number.
     */
 
View Full Code Here
43
44
45
46
47
48
49
50
51
52
53
     * bitCount() of a negative number.
     */
    @Test
    public void testBitCountNeg() {
        BigInteger aNumber = new BigInteger("-12378634756382937873487638746283767238657872368748726875");
        assertEquals(87, aNumber.bitCount());
    }

    /**
     * bitCount() of a negative number.
     */
 
View Full Code Here
52
53
54
55
56
57
58
59
60
61
62
     * bitCount() of a negative number.
     */
    @Test
    public void testBitCountPos() {
        BigInteger aNumber = new BigInteger("12378634756343564757582937873487638746283767238657872368748726875");
        assertEquals(107, aNumber.bitCount());
    }

    /**
     * bitLength() of zero.
     */
 
View Full Code Here
60
61
62
63
64
65
66
67
68
69
70
            }

            if (paramValue instanceof BigDecimal) {
                BigDecimal decimal = (BigDecimal) paramValue;
                BigInteger bigInt = decimal.setScale(0,  BigDecimal.ROUND_HALF_UP).toBigInteger();
                return bigInt.bitCount();
            }
            Long val = SQLEvalVisitorUtils.castToLong(paramValue);
            return Long.bitCount(val);
        }
       
View Full Code Here
18
19
20
21
22
23
24
25
26
27
28
    bb.put((byte)0xff).put((byte)0xff).put((byte)0xff).put((byte)0xff);
    bb.position(0);
    bb.limit(8);
    BigInteger bi = Unsigned.getUnsignedLong(bb);
    BigInteger uLongMax = new BigInteger(ULONG_MAX);
    for (int i = 0; i < uLongMax.bitCount(); ++i) {
        TestCase.assertTrue("Bit: " + i + " should be: " + uLongMax.testBit(i),
                uLongMax.testBit(i) == bi.testBit(i));
    }
    TestCase.assertEquals(ULONG_MAX, bi.toString());
View Full Code Here
33
34
35
36
37
38
39
40
41
42
43
    bb.put((byte)0x00);
    bb.position(0);
    bb.limit(10);
    bi = Unsigned.getUnsignedLong(bb, 1);
    uLongMax = new BigInteger(ULONG_MAX);
    for (int i = 0; i < uLongMax.bitCount(); ++i) {
        TestCase.assertTrue("Bit: " + i + " should be: " + uLongMax.testBit(i),
                uLongMax.testBit(i) == bi.testBit(i));
    }
    TestCase.assertEquals(ULONG_MAX, bi.toString());
  }
View Full Code Here
TOP
Copyright © 2018 www.massapi.com. All rights reserved.
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.