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Java BigInteger.and方法代码示例

本文整理汇总了Java中java.math.BigInteger.and方法的典型用法代码示例。如果您正苦于以下问题：Java BigInteger.and方法的具体用法？Java BigInteger.and怎么用？Java BigInteger.and使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类java.math.BigInteger的用法示例。


在下文中一共展示了BigInteger.and方法的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: execute

import java.math.BigInteger; //导入方法依赖的package包/类
@Override
public void execute(EVMState state, Opcode opcode) throws EVMException {
    EVMStack stack = state.getStack();
    TraceableWord traceableWord0 = stack.pop();
    TraceableWord traceableWord1 = stack.pop();

    TraceTree trace1 = traceableWord0.getTrace();
    TraceTree trace2 = traceableWord1.getTrace();

    BigInteger element0 = new BigInteger(traceableWord0.getBytes());
    BigInteger element1 = new BigInteger(traceableWord1.getBytes());
    BigInteger result = element0.and(element1);
    TraceableWord traceableWord = new TraceableWord(result.toByteArray());
    TraceTree traceTree = buildTraceTree(opcode, traceableWord, Lists.of(traceableWord0, traceableWord1));
    traceTree.addChild(trace1);
    traceTree.addChild(trace2);
    traceableWord.setTrace(traceTree);

    stack.push(traceableWord);
}
开发者ID:fergarrui，项目名称:ethereum-bytecode-analyzer，代码行数:21，代码来源:And.java

示例2: calculateRange

import java.math.BigInteger; //导入方法依赖的package包/类
private void calculateRange(int prefix) throws UnknownHostException {

        ByteBuffer maskBuffer;
        int prefixSize;
        if (baseAddress.getAddress().length == 4) {
            maskBuffer = ByteBuffer.allocate(4).putInt(-1);
            prefixSize = 4;
        } else {
            maskBuffer = ByteBuffer.allocate(16).putLong(-1L).putLong(-1L);
            prefixSize = 16;
        }

        BigInteger mask = (new BigInteger(1, maskBuffer.array())).not().shiftRight(prefix);

        BigInteger ipVal = new BigInteger(1, baseAddress.getAddress());

        BigInteger lowIp = ipVal.and(mask);
        BigInteger hiIp = lowIp.add(mask.not());

        byte[] lowIpArr = modifyArray(lowIp.toByteArray(), prefixSize);
        byte[] hiIpArr = modifyArray(hiIp.toByteArray(), prefixSize);

        lowAddress = InetAddress.getByAddress(lowIpArr);
        highAddress = InetAddress.getByAddress(hiIpArr);
    }
开发者ID:Comcast，项目名称:redirector，代码行数:26，代码来源:IpAddress.java

示例3: getIpRangeMin

import java.math.BigInteger; //导入方法依赖的package包/类
private static IpAddress getIpRangeMin(IpAddress ipAddress, int maskLength) {
    BigInteger ip = ipAddress.toBigInteger();
    BigInteger subnetMask = new BigInteger(
            1,
            new byte[]{-1, -1, -1, -1})
            .shiftRight(maskLength)
            .xor(new BigInteger(1, new byte[]{-1, -1, -1, -1}));

    BigInteger networkAddress = ip.and(subnetMask);

    if (ipAddress instanceof Ipv4Address) {
        return Ipv4Address.gain(networkAddress.intValue());
    } else if (ipAddress instanceof Ipv6Address) {
        throw new UnsupportedAddressTypeException();
    } else {
        throw new IllegalArgumentException("Address acquisition failure");
    }
}
开发者ID:openNaEF，项目名称:openNaEF，代码行数:19，代码来源:InventoryGetIpAddressListState.java

示例4: transform

import java.math.BigInteger; //导入方法依赖的package包/类
public String transform(PropertyValue value, String result) {
	double floatValue;
	
	if (value.getLSB() != null) {
		BigInteger val = parse(value, result);
		
		if (!value.mask().equals(BigInteger.ZERO))
			val = val.and(value.mask()); 
		
		if (!value.shift().equals(0))
			val = val.shiftRight(value.shift());
		
		if (value.getSigned() && val.bitLength()==(value.size()*4)) {
			BigInteger complement = new BigInteger(new String(new char[value.size()]).replace("\0", "F"),16);
			val = val.subtract(complement);
		}
		
		if (!objectCache.getTransformData()) {
			int intValue = val.intValue();
			return String.valueOf(intValue);
		}
		
		floatValue = val.doubleValue();
	} else {
		floatValue = Float.parseFloat(result);
	}
	
	if (!value.base().equals(0))
		floatValue = Math.pow(value.base(), floatValue);
	floatValue = floatValue * value.scale();
	floatValue = floatValue + value.offset();
	
	if (value.getType().toLowerCase().equals("f") || value.getType().toLowerCase().equals("float"))
		return String.valueOf(floatValue);
	return String.valueOf(Math.round(floatValue));
}
开发者ID:edgexfoundry，项目名称:device-modbus，代码行数:37，代码来源:ObjectTransform.java

示例5: hammingDistance

import java.math.BigInteger; //导入方法依赖的package包/类
public int hammingDistance(SimHash other) {
    BigInteger m = new BigInteger("1").shiftLeft(this.hashbits).subtract(
            new BigInteger("1"));
    BigInteger x = this.strSimHash.xor(other.strSimHash).and(m);
    int tot = 0;
    while (x.signum() != 0) {
        tot += 1;
        x = x.and(x.subtract(new BigInteger("1")));
    }
    return tot;
}
开发者ID:weiboad，项目名称:fiery，代码行数:12，代码来源:SimHash.java

示例6: calculate

import java.math.BigInteger; //导入方法依赖的package包/类
private void calculate() throws UnknownHostException {

        ByteBuffer maskBuffer;
        int targetSize;
        if (inetAddress.getAddress().length == 4) {
            maskBuffer =
                    ByteBuffer
                            .allocate(4)
                            .putInt(-1);
            targetSize = 4;
        } else {
            maskBuffer = ByteBuffer.allocate(16)
                    .putLong(-1L)
                    .putLong(-1L);
            targetSize = 16;
        }

        BigInteger mask = (new BigInteger(1, maskBuffer.array())).not().shiftRight(prefixLength);

        ByteBuffer buffer = ByteBuffer.wrap(inetAddress.getAddress());
        BigInteger ipVal = new BigInteger(1, buffer.array());

        BigInteger startIp = ipVal.and(mask);
        BigInteger endIp = startIp.add(mask.not());

        byte[] startIpArr = toBytes(startIp.toByteArray(), targetSize);
        byte[] endIpArr = toBytes(endIp.toByteArray(), targetSize);

        this.startAddress = InetAddress.getByAddress(startIpArr);
        this.endAddress = InetAddress.getByAddress(endIpArr);

    }
开发者ID:kamax-io，项目名称:mxisd，代码行数:33，代码来源:CIDRUtils.java

示例7: write

import java.math.BigInteger; //导入方法依赖的package包/类
private static void write(BinaryStream stream, BigInteger v) {
    _assert(v);
    v = v.and(UNSIGNED_LONG_MAX_VALUE);
    BigInteger i = BigInteger.valueOf(-128);
    BigInteger BIX7F = BigInteger.valueOf(0x7f);
    BigInteger BIX80 = BigInteger.valueOf(0x80);
    while (!v.and(i).equals(BigInteger.ZERO)) {
        stream.putByte(v.and(BIX7F).or(BIX80).byteValue());
        v = v.shiftRight(7);
    }

    stream.putByte(v.byteValue());
}
开发者ID:FrontierDevs，项目名称:Jenisys3，代码行数:14，代码来源:VarInt.java

示例8: calculate

import java.math.BigInteger; //导入方法依赖的package包/类
private void calculate(String cidr) throws UnknownHostException {
    int index = cidr.indexOf(CIDR_RANGE_TOKEN);
    String addressPart = cidr.substring(0, index);
    String networkPart = cidr.substring(index + 1);

    inetAddress = InetAddress.getByName(addressPart);
    prefixLength = Integer.parseInt(networkPart);
    ByteBuffer maskBuffer;
    int targetSize;
    if (inetAddress.getAddress().length == IPV4_BYTES) {
        maskBuffer = ByteBuffer.allocate(IPV4_BYTES).putInt(-1);
        targetSize = IPV4_BYTES;
    } else {
        maskBuffer = ByteBuffer.allocate(IPV6_BYTES).putLong(-1L);
        targetSize = IPV6_BYTES;
    }

    BigInteger mask = (new BigInteger(1, maskBuffer.array())).not().shiftRight(prefixLength);

    ByteBuffer buffer = ByteBuffer.wrap(inetAddress.getAddress());
    BigInteger ipValue = new BigInteger(1, buffer.array());

    BigInteger startIp = ipValue.and(mask);
    BigInteger endIp = startIp.add(mask.not());

    byte[] startIpBytes = toBytes(startIp.toByteArray(), targetSize);
    byte[] endIpBytes = toBytes(endIp.toByteArray(), targetSize);

    startAddress = InetAddress.getByAddress(startIpBytes);
    endAddress = InetAddress.getByAddress(endIpBytes);
}
开发者ID:Comcast，项目名称:redirector，代码行数:32，代码来源:CIDR.java

示例9: montgomeryMultiply

import java.math.BigInteger; //导入方法依赖的package包/类
BigInteger montgomeryMultiply(BigInteger a, BigInteger b, BigInteger N,
        int len, BigInteger n_prime)
        throws Throwable {
    BigInteger T = a.multiply(b);
    BigInteger R = BigInteger.ONE.shiftLeft(len*32);
    BigInteger mask = R.subtract(BigInteger.ONE);
    BigInteger m = (T.and(mask)).multiply(n_prime);
    m = m.and(mask); // i.e. m.mod(R)
    T = T.add(m.multiply(N));
    T = T.shiftRight(len*32); // i.e. T.divide(R)
    if (T.compareTo(N) > 0) {
        T = T.subtract(N);
    }
    return T;
}
开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:16，代码来源:MontgomeryMultiplyTest.java

示例10: valInt

import java.math.BigInteger; //导入方法依赖的package包/类
@Override
public BigInteger valInt() {
    if (args.get(0).isNullValue()) {
        nullValue = true; /* purecov: inspected */
        return BigInteger.ZERO; /* purecov: inspected */
    }
    if (args.get(1).isNullValue()) {
        nullValue = true;
        return BigInteger.ZERO;
    }
    nullValue = false;
    BigInteger arg1 = args.get(0).valInt();
    BigInteger arg2 = args.get(1).valInt();
    return arg1.and(arg2);
}
开发者ID:actiontech，项目名称:dble，代码行数:16，代码来源:ItemFuncBitAnd.java

示例11: transform

import java.math.BigInteger; //导入方法依赖的package包/类
public String transform(PropertyValue value, String result) {
  double floatValue;
  if (value.getType().toLowerCase().equals("s")
      || value.getType().toLowerCase().equals("string")) {
    return result;
  }

  if (value.getLSB() != null) {
    BigInteger val = parse(value, result);

    if (!value.mask().equals(BigInteger.ZERO)) {
      val = val.and(value.mask());
    }

    if (!value.shift().equals(0)) {
      val = val.shiftRight(value.shift());
    }

    if (value.getSigned() && val.bitLength() == (value.size() * 4)) {
      BigInteger complement =
          new BigInteger(new String(new char[value.size()]).replace("\0", "F"), 16);
      val = val.subtract(complement);
    }

    if (!objectCache.getTransformData()) {
      int intValue = val.intValue();
      return String.valueOf(intValue);
    }

    floatValue = val.doubleValue();
  } else {
    floatValue = Float.parseFloat(result);
  }

  if (!value.base().equals(0)) {
    floatValue = Math.pow(value.base(), floatValue);
  }

  floatValue = floatValue * value.scale();
  floatValue = floatValue + value.offset();

  if (value.getType().toLowerCase().equals("f")
      || value.getType().toLowerCase().equals("float")) {
    return String.valueOf(floatValue);
  }

  return String.valueOf(Math.round(floatValue));
}
开发者ID:mgjeong，项目名称:device-opcua-java，代码行数:49，代码来源:ObjectTransform.java

示例12: and

import java.math.BigInteger; //导入方法依赖的package包/类
public static BigInteger and( BigInteger a, BigInteger b ) {
   return a.and( b );
}
开发者ID:parabuild-ci，项目名称:parabuild-ci，代码行数:4，代码来源:Math.java

示例13: transform

import java.math.BigInteger; //导入方法依赖的package包/类
public String transform(PropertyValue value, String result) {
  double floatValue;

  // Do not perform transforms on non-numeric fields
  if (nonNumeric(value)) {
    return result;
  }

  if (value.getLSB() != null) {
    BigInteger val = parse(value, result);

    if (!value.mask().equals(BigInteger.ZERO)) {
      val = val.and(value.mask());
    }

    if (!value.shift().equals(0)) {
      val = val.shiftRight(value.shift());
    }

    if (value.getSigned() && val.bitLength() == (value.size() * 4)) {
      BigInteger complement =
          new BigInteger(new String(new char[value.size()]).replace("\0", "F"), 16);
      val = val.subtract(complement);
    }

    if (!objectCache.getTransformData()) {
      int intValue = val.intValue();
      return String.valueOf(intValue);
    }

    floatValue = val.doubleValue();
  } else {
    floatValue = Float.parseFloat(result);
  }

  if (!value.base().equals(0)) {
    floatValue = Math.pow(value.base(), floatValue);
  }

  floatValue = floatValue * value.scale();
  floatValue = floatValue + value.offset();

  if (value.getType().toLowerCase().equals("f")
      || value.getType().toLowerCase().equals("float")) {
    return String.valueOf(floatValue);
  }

  return String.valueOf(Math.round(floatValue));
}
开发者ID:edgexfoundry，项目名称:device-mqtt，代码行数:50，代码来源:ObjectTransform.java

示例14: checkDifficultyTransitions

import java.math.BigInteger; //导入方法依赖的package包/类
@Override
public void checkDifficultyTransitions(final StoredBlock storedPrev, final Block nextBlock,
	final BlockStore blockStore) throws VerificationException, BlockStoreException {
    final Block prev = storedPrev.getHeader();

    // Is this supposed to be a difficulty transition point?
    if (!isDifficultyTransitionPoint(storedPrev.getHeight())) {

        // No ... so check the difficulty didn't actually change.
        if (nextBlock.getDifficultyTarget() != prev.getDifficultyTarget())
            throw new VerificationException("Unexpected change in difficulty at height " + storedPrev.getHeight() +
                    ": " + Long.toHexString(nextBlock.getDifficultyTarget()) + " vs " +
                    Long.toHexString(prev.getDifficultyTarget()));
        return;
    }

    // We need to find a block far back in the chain. It's OK that this is expensive because it only occurs every
    // two weeks after the initial block chain download.
    final Stopwatch watch = Stopwatch.createStarted();
    Sha256Hash hash = prev.getHash();
    StoredBlock cursor = null;
    final int interval = this.getInterval();
    for (int i = 0; i < interval; i++) {
        cursor = blockStore.get(hash);
        if (cursor == null) {
            // This should never happen. If it does, it means we are following an incorrect or busted chain.
            throw new VerificationException(
                    "Difficulty transition point but we did not find a way back to the last transition point. Not found: " + hash);
        }
        hash = cursor.getHeader().getPrevBlockHash();
    }
    checkState(cursor != null && isDifficultyTransitionPoint(cursor.getHeight() - 1),
            "Didn't arrive at a transition point.");
    watch.stop();
    if (watch.elapsed(TimeUnit.MILLISECONDS) > 50)
        log.info("Difficulty transition traversal took {}", watch);

    Block blockIntervalAgo = cursor.getHeader();
    int timespan = (int) (prev.getTimeSeconds() - blockIntervalAgo.getTimeSeconds());
    // Limit the adjustment step.
    final int targetTimespan = this.getTargetTimespan();
    if (timespan < targetTimespan / 4)
        timespan = targetTimespan / 4;
    if (timespan > targetTimespan * 4)
        timespan = targetTimespan * 4;

    BigInteger newTarget = Utils.decodeCompactBits(prev.getDifficultyTarget());
    newTarget = newTarget.multiply(BigInteger.valueOf(timespan));
    newTarget = newTarget.divide(BigInteger.valueOf(targetTimespan));

    if (newTarget.compareTo(this.getMaxTarget()) > 0) {
        log.info("Difficulty hit proof of work limit: {}", newTarget.toString(16));
        newTarget = this.getMaxTarget();
    }

    int accuracyBytes = (int) (nextBlock.getDifficultyTarget() >>> 24) - 3;
    long receivedTargetCompact = nextBlock.getDifficultyTarget();

    // The calculated difficulty is to a higher precision than received, so reduce here.
    BigInteger mask = BigInteger.valueOf(0xFFFFFFL).shiftLeft(accuracyBytes * 8);
    newTarget = newTarget.and(mask);
    long newTargetCompact = Utils.encodeCompactBits(newTarget);

    if (newTargetCompact != receivedTargetCompact)
        throw new VerificationException("Network provided difficulty bits do not match what was calculated: " +
                Long.toHexString(newTargetCompact) + " vs " + Long.toHexString(receivedTargetCompact));
}
开发者ID:guodroid，项目名称:okwallet，代码行数:68，代码来源:AbstractBitcoinNetParams.java

示例15: transform

import java.math.BigInteger; //导入方法依赖的package包/类
public String transform(PropertyValue value, String result) {
  double floatValue;

  if (value.getLSB() != null) {
    BigInteger val = parse(value, result);

    if (!value.mask().equals(BigInteger.ZERO)) {
      val = val.and(value.mask());
    }

    if (!value.shift().equals(0)) {
      val = val.shiftRight(value.shift());
    }

    if (value.getSigned() && val.bitLength() == (value.size() * 4)) {
      BigInteger complement =
          new BigInteger(new String(new char[value.size()]).replace("\0", "F"), 16);
      val = val.subtract(complement);
    }

    if (!objectCache.getTransformData()) {
      int intValue = val.intValue();
      return String.valueOf(intValue);
    }

    floatValue = val.doubleValue();
  } else {
    floatValue = Float.parseFloat(result);
  }

  if (!value.base().equals(0)) {
    floatValue = Math.pow(value.base(), floatValue);
  }

  floatValue = floatValue * value.scale();
  floatValue = floatValue + value.offset();

  if (value.getType().toLowerCase().equals("f")
      || value.getType().toLowerCase().equals("float")) {
    return String.valueOf(floatValue);
  }

  return String.valueOf(Math.round(floatValue));
}
开发者ID:edgexfoundry，项目名称:device-bluetooth，代码行数:45，代码来源:ObjectTransform.java


注：本文中的java.math.BigInteger.and方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。