Example usage for java.math BigInteger add

Introduction

In this page you can find the example usage for java.math BigInteger add.

Prototype

BigInteger add(long val) 

Source Link

Document

Package private methods used by BigDecimal code to add a BigInteger with a long.

Usage

From source file:Main.java

public static BigInteger getZ(ArrayList<byte[]> c1, ArrayList<byte[]> c2, BigInteger p) {
    BigInteger z = BigInteger.ZERO;

    //TODO: make sure c1 and c2 are of the same size
    int size = c1.size();
    if (size > c2.size()) {
        size = c2.size();/*from w w  w.  ja v  a 2 s.  c  o m*/
    }

    for (int i = 0; i < size; i++) {
        BigInteger c1BI = new BigInteger(1, c1.get(i));
        BigInteger c2BI = new BigInteger(1, c2.get(i));
        BigInteger exp = new BigInteger(1, ByteBuffer.allocate(8).putLong((long) Math.pow(2, i)).array());

        z = z.add((c1BI.multiply(c2BI)).modPow(exp, p));
        Log.d("CeCk", "z calculation " + i + "/" + size + " round");
    }
    return z.mod(p);
}

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From source file:jp.co.ntts.vhut.util.Ipv4ConversionUtil.java

/**
 * ??IP??NW??????./*from  w w  w. ja  va 2s . com*/
 * @param bAddr IP?
 * @param bMask (?)
 * @return ??
 */
public static byte[] getNextNetworkAddressAsByte(byte[] bAddr, byte[] bMask) {
    BigInteger current = new BigInteger(getNetworkAddressAsByte(bAddr, bMask));
    BigInteger reversedMask = new BigInteger(byteXOR(bMask, getFullBytes()));
    return current.add(reversedMask).add(BigInteger.ONE).toByteArray();
}

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From source file:jp.co.ntts.vhut.util.Ipv4ConversionUtil.java

/**
 * IP(HEX)????./*from  w  ww .ja  v a  2 s  .  co  m*/
 * ????int????????????.
 * @param startIpaddr (HEX/)
 * @param endIpaddr (HEX/)
 * @return IP(HEX)??
 */
public static Set<String> getIpAddressSetBetween(String startIpaddr, String endIpaddr) {
    BigInteger startBI = new BigInteger(addrTobyte(startIpaddr));
    BigInteger endBI = new BigInteger(addrTobyte(endIpaddr));
    int length = (int) Math.min(endBI.subtract(startBI).longValue(), Integer.MAX_VALUE);

    Set<String> resultSet = new HashSet<String>();

    BigInteger currentBI = startBI;

    for (int i = 0; i <= length; i++) {
        resultSet.add(byteToAddr(currentBI.toByteArray()));
        currentBI = currentBI.add(BigInteger.ONE);
    }

    return resultSet;
}

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From source file:org.objectspace.rfid.elatec.ElatecRFID.java

public static String longToHex(long l) {
    BigInteger b = BigInteger.valueOf(l);
    if (b.signum() < 0)
        b = b.add(TWO_64);
    String str = b.toString(16);//from w  ww.j  a v a 2  s.co m
    if (str.length() == 16)
        str = str.substring(8);
    while (str.length() < 8)
        str = "0" + str;
    return str;
}

---

From source file:org.objectspace.rfid.elatec.ElatecRFID.java

public static String intToHex(int i) {
    BigInteger b = BigInteger.valueOf(i);
    if (b.signum() < 0)
        b = b.add(TWO_64);
    String str = b.toString(16);//from www.ja  va 2s.c o  m
    if (str.length() == 16)
        str = str.substring(12);
    while (str.length() < 4)
        str = "0" + str;
    return str;
}

---

From source file:com.bigdata.dastor.utils.FBUtilities.java

/**
 * Given two bit arrays represented as BigIntegers, containing the given
 * number of significant bits, calculate a midpoint.
 *
 * @param left The left point./* w  w w  .j  a  v a  2 s. com*/
 * @param right The right point.
 * @param sigbits The number of bits in the points that are significant.
 * @return A midpoint that will compare bitwise halfway between the params, and
 * a boolean representing whether a non-zero lsbit remainder was generated.
 */
public static Pair<BigInteger, Boolean> midpoint(BigInteger left, BigInteger right, int sigbits) {
    BigInteger midpoint;
    boolean remainder;
    if (left.compareTo(right) < 0) {
        BigInteger sum = left.add(right);
        remainder = sum.testBit(0);
        midpoint = sum.shiftRight(1);
    } else {
        BigInteger max = TWO.pow(sigbits);
        // wrapping case
        BigInteger distance = max.add(right).subtract(left);
        remainder = distance.testBit(0);
        midpoint = distance.shiftRight(1).add(left).mod(max);
    }
    return new Pair(midpoint, remainder);
}

---

From source file:org.apache.cassandra.utils.FBUtilities.java

/**
 * Given two bit arrays represented as BigIntegers, containing the given
 * number of significant bits, calculate a midpoint.
 *
 * @param left The left point.//from w w w .ja va  2s.com
 * @param right The right point.
 * @param sigbits The number of bits in the points that are significant.
 * @return A midpoint that will compare bitwise halfway between the params, and
 * a boolean representing whether a non-zero lsbit remainder was generated.
 */
public static Pair<BigInteger, Boolean> midpoint(BigInteger left, BigInteger right, int sigbits) {
    BigInteger midpoint;
    boolean remainder;
    if (left.compareTo(right) < 0) {
        BigInteger sum = left.add(right);
        remainder = sum.testBit(0);
        midpoint = sum.shiftRight(1);
    } else {
        BigInteger max = TWO.pow(sigbits);
        // wrapping case
        BigInteger distance = max.add(right).subtract(left);
        remainder = distance.testBit(0);
        midpoint = distance.shiftRight(1).add(left).mod(max);
    }
    return new Pair<BigInteger, Boolean>(midpoint, remainder);
}

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From source file:org.multibit.utils.CSMiscUtils.java

@Deprecated
public static BigInteger calcTotalRawCharge(CSAsset asset, BigInteger numRawUnits) {
    BigInteger interestCharge = calcRawPercentageCharge(asset, numRawUnits);
    BigInteger flatCharge = calcRawFlatCharge(asset);
    System.out.println(">>>>> raw flat charge = " + flatCharge);
    return interestCharge.add(flatCharge);
}

---

From source file:org.alfresco.mobile.android.api.network.NetworkHttpInvoker.java

private static Response invoke(UrlBuilder url, String method, String contentType,
        Map<String, List<String>> httpHeaders, Output writer, boolean forceOutput, BigInteger offset,
        BigInteger length, Map<String, String> params) {
    try {//from  ww w.  java 2  s. c  om
        // Log.d("URL", url.toString());

        // connect
        HttpURLConnection conn = (HttpURLConnection) (new URL(url.toString())).openConnection();
        conn.setRequestMethod(method);
        conn.setDoInput(true);
        conn.setDoOutput(writer != null || forceOutput);
        conn.setAllowUserInteraction(false);
        conn.setUseCaches(false);
        conn.setRequestProperty("User-Agent", ClientVersion.OPENCMIS_CLIENT);

        // set content type
        if (contentType != null) {
            conn.setRequestProperty("Content-Type", contentType);
        }
        // set other headers
        if (httpHeaders != null) {
            for (Map.Entry<String, List<String>> header : httpHeaders.entrySet()) {
                if (header.getValue() != null) {
                    for (String value : header.getValue()) {
                        conn.addRequestProperty(header.getKey(), value);
                    }
                }
            }
        }

        // range
        BigInteger tmpOffset = offset;
        if ((tmpOffset != null) || (length != null)) {
            StringBuilder sb = new StringBuilder("bytes=");

            if ((tmpOffset == null) || (tmpOffset.signum() == -1)) {
                tmpOffset = BigInteger.ZERO;
            }

            sb.append(tmpOffset.toString());
            sb.append("-");

            if ((length != null) && (length.signum() == 1)) {
                sb.append(tmpOffset.add(length.subtract(BigInteger.ONE)).toString());
            }

            conn.setRequestProperty("Range", sb.toString());
        }

        conn.setRequestProperty("Accept-Encoding", "gzip,deflate");

        // add url form parameters
        if (params != null) {
            DataOutputStream ostream = null;
            OutputStream os = null;
            try {
                os = conn.getOutputStream();
                ostream = new DataOutputStream(os);

                Set<String> parameters = params.keySet();
                StringBuffer buf = new StringBuffer();

                int paramCount = 0;
                for (String it : parameters) {
                    String parameterName = it;
                    String parameterValue = (String) params.get(parameterName);

                    if (parameterValue != null) {
                        parameterValue = URLEncoder.encode(parameterValue, "UTF-8");
                        if (paramCount > 0) {
                            buf.append("&");
                        }
                        buf.append(parameterName);
                        buf.append("=");
                        buf.append(parameterValue);
                        ++paramCount;
                    }
                }
                ostream.writeBytes(buf.toString());
            } finally {
                if (ostream != null) {
                    ostream.flush();
                    ostream.close();
                }
                IOUtils.closeStream(os);
            }
        }

        // send data

        if (writer != null) {
            // conn.setChunkedStreamingMode((64 * 1024) - 1);
            OutputStream connOut = null;
            connOut = conn.getOutputStream();
            OutputStream out = new BufferedOutputStream(connOut, BUFFER_SIZE);
            writer.write(out);
            out.flush();
        }

        // connect
        conn.connect();

        // get stream, if present
        int respCode = conn.getResponseCode();
        InputStream inputStream = null;
        if ((respCode == HttpStatus.SC_OK) || (respCode == HttpStatus.SC_CREATED)
                || (respCode == HttpStatus.SC_NON_AUTHORITATIVE_INFORMATION)
                || (respCode == HttpStatus.SC_PARTIAL_CONTENT)) {
            inputStream = conn.getInputStream();
        }

        // get the response
        return new Response(respCode, conn.getResponseMessage(), conn.getHeaderFields(), inputStream,
                conn.getErrorStream());
    } catch (Exception e) {
        throw new CmisConnectionException("Cannot access " + url + ": " + e.getMessage(), e);
    }
}

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From source file:com.wms.utils.DataUtil.java

public static BigInteger ipv6ToNumber(String addr) {
    int startIndex = addr.indexOf("::");

    if (startIndex != -1) {

        String firstStr = addr.substring(0, startIndex);
        String secondStr = addr.substring(startIndex + 2, addr.length());

        BigInteger first = ipv6ToNumber(firstStr);

        int x = countChar(addr, ':');
        int y = countChar(secondStr, ':');
        //first = first.shiftLeft(16 * (7 - x)).add(ipv6ToNumber(secondStr));
        first = first.shiftLeft(16 * (7 - x + y));
        first = first.add(ipv6ToNumber(secondStr));

        return first;
    }//  w  w  w  . j  a  v a  2  s  .  co m

    String[] strArr = addr.split(":");

    BigInteger retValue = BigInteger.valueOf(0);
    for (int i = 0; i < strArr.length; i++) {
        BigInteger bi = new BigInteger(strArr[i], 16);
        retValue = retValue.shiftLeft(16).add(bi);
    }
    return retValue;
}

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