本文整理了Java中java.math.BigInteger.getLowestSetBit()方法的一些代码示例，展示了BigInteger.getLowestSetBit()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。BigInteger.getLowestSetBit()方法的具体详情如下：
包路径：java.math.BigInteger
类名称：BigInteger
方法名：getLowestSetBit

BigInteger.getLowestSetBit介绍

[英]Returns the position of the lowest set bit in the two's complement representation of this BigInteger. If all bits are zero (this==0) then -1 is returned as result.

Implementation Note: Usage of this method is not recommended as the current implementation is not efficient.
[中]返回此BigInteger的两个补码表示形式中最低设置位的位置。如果所有位都为零（此==0），则返回-1作为结果。
实施说明：不建议使用此方法，因为当前的实施效率不高。

代码示例

代码示例来源：origin: google/guava

/** Returns {@code true} if {@code x} represents a power of two. */
public static boolean isPowerOfTwo(BigInteger x) {
 checkNotNull(x);
 return x.signum() > 0 && x.getLowestSetBit() == x.bitLength() - 1;
}

代码示例来源：origin: google/j2objc

/** Returns {@code true} if {@code x} represents a power of two. */
public static boolean isPowerOfTwo(BigInteger x) {
 checkNotNull(x);
 return x.signum() > 0 && x.getLowestSetBit() == x.bitLength() - 1;
}

代码示例来源：origin: prestodb/presto

/** Returns {@code true} if {@code x} represents a power of two. */
public static boolean isPowerOfTwo(BigInteger x) {
 checkNotNull(x);
 return x.signum() > 0 && x.getLowestSetBit() == x.bitLength() - 1;
}

代码示例来源：origin: wildfly/wildfly

/** Returns {@code true} if {@code x} represents a power of two. */
public static boolean isPowerOfTwo(BigInteger x) {
 checkNotNull(x);
 return x.signum() > 0 && x.getLowestSetBit() == x.bitLength() - 1;
}

代码示例来源：origin: google/guava

(twiceSignifFloor & 1) != 0 && ((signifFloor & 1) != 0 || absX.getLowestSetBit() < shift);
long signifRounded = increment ? signifFloor + 1 : signifFloor;
long bits = (long) (exponent + EXPONENT_BIAS) << SIGNIFICAND_BITS;

代码示例来源：origin: prestodb/presto

(twiceSignifFloor & 1) != 0 && ((signifFloor & 1) != 0 || absX.getLowestSetBit() < shift);
long signifRounded = increment ? signifFloor + 1 : signifFloor;
long bits = (long) ((exponent + EXPONENT_BIAS)) << SIGNIFICAND_BITS;

代码示例来源：origin: google/j2objc

(twiceSignifFloor & 1) != 0 && ((signifFloor & 1) != 0 || absX.getLowestSetBit() < shift);
long signifRounded = increment ? signifFloor + 1 : signifFloor;
long bits = (long) ((exponent + EXPONENT_BIAS)) << SIGNIFICAND_BITS;

代码示例来源：origin: wildfly/wildfly

(twiceSignifFloor & 1) != 0 && ((signifFloor & 1) != 0 || absX.getLowestSetBit() < shift);
long signifRounded = increment ? signifFloor + 1 : signifFloor;
long bits = (long) ((exponent + EXPONENT_BIAS)) << SIGNIFICAND_BITS;

代码示例来源：origin: robovm/robovm

exponent -= 2;
lowestSetBit = mantissa.getLowestSetBit();
discardedSize = mantissa.bitLength() - 54;
if (discardedSize > 0) {// (n > 54)

代码示例来源：origin: robovm/robovm

q = q.divide(gcd);
k = q.getLowestSetBit();
q = q.shiftRight(k);

代码示例来源：origin: robovm/robovm

ks[i] = rpTmp.getLowestSetBit();
rpTmp = rpTmp.clearBit(ks[i]);

代码示例来源：origin: robovm/robovm

/**
 * Returns this {@code BigDecimal} as a big integer instance if it has no
 * fractional part. If this {@code BigDecimal} has a fractional part, i.e.
 * if rounding would be necessary, an {@code ArithmeticException} is thrown.
 *
 * @return this {@code BigDecimal} as a big integer value.
 * @throws ArithmeticException
 *             if rounding is necessary.
 */
public BigInteger toBigIntegerExact() {
  if ((scale == 0) || (isZero())) {
    return getUnscaledValue();
  } else if (scale < 0) {
    return getUnscaledValue().multiply(Multiplication.powerOf10(-(long)scale));
  } else {// (scale > 0)
    BigInteger[] integerAndFraction;
    // An optimization before do a heavy division
    if ((scale > approxPrecision()) || (scale > getUnscaledValue().getLowestSetBit())) {
      throw new ArithmeticException("Rounding necessary");
    }
    integerAndFraction = getUnscaledValue().divideAndRemainder(Multiplication.powerOf10(scale));
    if (integerAndFraction[1].signum() != 0) {
      // It exists a non-zero fractional part
      throw new ArithmeticException("Rounding necessary");
    }
    return integerAndFraction[0];
  }
}

代码示例来源：origin: stackoverflow.com

int twos = denominator.getLowestSetBit();

代码示例来源：origin: org.freemarker/freemarker

&& (bitLength <= MAX_FLOAT_OR_INT_LOG_2
      || bitLength == MAX_FLOAT_OR_INT_LOG_2 + 1
        && biNum.getLowestSetBit() >= MAX_FLOAT_OR_INT_LOG_2)) {
  return new BigIntegerOrFloat(biNum);
} else if ((typeFlags & TypeFlags.DOUBLE) != 0
    && (bitLength <= MAX_DOUBLE_OR_LONG_LOG_2
      || bitLength == MAX_DOUBLE_OR_LONG_LOG_2 + 1
        && biNum.getLowestSetBit() >= MAX_DOUBLE_OR_LONG_LOG_2)) {
  return new BigIntegerOrDouble(biNum);
} else {

代码示例来源：origin: org.sonatype.sisu/sisu-guava

/**
 * Returns {@code true} if {@code x} represents a power of two.
 */
public static boolean isPowerOfTwo(BigInteger x) {
 checkNotNull(x);
 return x.signum() > 0 && x.getLowestSetBit() == x.bitLength() - 1;
}

代码示例来源：origin: com.ning.billing/killbill-osgi-bundles-jruby

/**
 * Returns {@code true} if {@code x} represents a power of two.
 */
public static boolean isPowerOfTwo(BigInteger x) {
 checkNotNull(x);
 return x.signum() > 0 && x.getLowestSetBit() == x.bitLength() - 1;
}

代码示例来源：origin: org.kill-bill.billing/killbill-platform-osgi-bundles-logger

/** Returns {@code true} if {@code x} represents a power of two. */
public static boolean isPowerOfTwo(BigInteger x) {
 checkNotNull(x);
 return x.signum() > 0 && x.getLowestSetBit() == x.bitLength() - 1;
}

代码示例来源：origin: com.atlassian.guava/guava

/**
 * Returns {@code true} if {@code x} represents a power of two.
 */
public static boolean isPowerOfTwo(BigInteger x) {
 checkNotNull(x);
 return x.signum() > 0 && x.getLowestSetBit() == x.bitLength() - 1;
}

代码示例来源：origin: com.alibaba.citrus.tool/antx-autoexpand

@Override
  protected boolean isPowerOfTwo(Object value) {
    BigInteger bintValue = (BigInteger) value;
    int bitIndex = bintValue.getLowestSetBit();
    if (bitIndex < 0) {
      return false;
    }
    return bintValue.clearBit(bitIndex).equals(BigInteger.ZERO);
  }
};

代码示例来源：origin: apache/jena

@Override
public NodeValue exec(NodeValue x)
{
  if ( ! x.isInteger() )
    throw new ExprEvalException("evenInteger: Not an intger: "+x) ;
  int i = x.getInteger().getLowestSetBit() ;
  
  boolean b = (i == -1) || ( i != 0 ) ;  
  
  return NodeValue.makeNodeBoolean( b ) ;
}