/**
* Gets the fraction as a <tt>double</tt>. This calculates the fraction as the numerator divided
* by denominator.
*
* @return the fraction as a <tt>double</tt>
* @see java.lang.Number#doubleValue()
*/
@Override
public double doubleValue() {
double result = numerator.doubleValue() / denominator.doubleValue();
if (Double.isNaN(result)) {
// Numerator and/or denominator must be out of range:
// Calculate how far to shift them to put them in range.
int shift = Math.max(numerator.bitLength(), denominator.bitLength()) - Double.MAX_EXPONENT;
result =
numerator.shiftRight(shift).doubleValue() / denominator.shiftRight(shift).doubleValue();
}
return result;
}
@Override
public double getDoubleValue() {
double result = wholePartValue.doubleValue();
if (radix == 16) {
result += fractionPartValue.doubleValue() * Math.pow(2, -4 * fractionLength);
result *= Math.pow(2, exponentValue.doubleValue());
} else if (radix == 10) {
result += fractionPartValue.doubleValue() * Math.pow(10, -fractionLength);
result *= Math.pow(10, exponentValue.doubleValue());
} else {
throw new RuntimeException("Only know base 10 and 16");
}
return result;
}
public Number compute(Number d1, Number d2) {
BigInteger b1 = (BigInteger) d1;
BigInteger b2 = (BigInteger) d2;
if (b2.doubleValue() == 0) {
return null;
}
return b1.divide(b2);
}
public Number compute(Number d1, Number d2) {
BigInteger s1 = convOne.coerceBoxedBigInt(d1);
BigInteger s2 = convTwo.coerceBoxedBigInt(d2);
if (s2.doubleValue() == 0) {
return null;
}
return s1.divide(s2);
}
public static Transaction create(String source, BigInteger bet, Double chance, Double payout)
throws Exception {
BigInteger chaSupply = Util.chaSupplyForBetting();
if (source.equals("")) throw new Exception("Please specify a source address.");
if (!(bet.compareTo(BigInteger.ZERO) > 0)) throw new Exception("Please bet more than zero.");
if (!(chance > 0.0 && chance < 100.0))
throw new Exception("Please specify a chance between 0 and 100.");
if (!(payout > 1.0)) throw new Exception("Please specify a payout greater than 1.");
if (!(Util.roundOff(chance, 6)
== Util.roundOff(100.0 / (payout / (1.0 - Config.houseEdge)), 6)))
throw new Exception("Please specify a chance and payout that are congruent.");
if (!(bet.compareTo(Util.getBalance(source, "CHA")) <= 0))
throw new Exception("Please specify a bet that is smaller than your CHA balance.");
if (!((payout - 1.0) * bet.doubleValue() < chaSupply.doubleValue() * Config.maxProfit))
throw new Exception(
"Please specify a bet with a payout less than the maximum percentage of the house bankroll you can win.");
Blocks blocks = Blocks.getInstance();
ByteBuffer byteBuffer = ByteBuffer.allocate(length + 4);
byteBuffer.putInt(0, id);
byteBuffer.putLong(0 + 4, bet.longValue());
byteBuffer.putDouble(8 + 4, chance);
byteBuffer.putDouble(16 + 4, payout);
List<Byte> dataArrayList = Util.toByteArrayList(byteBuffer.array());
dataArrayList.addAll(0, Util.toByteArrayList(Config.prefix.getBytes()));
byte[] data = Util.toByteArray(dataArrayList);
String dataString = "";
try {
dataString = new String(data, "ISO-8859-1");
} catch (UnsupportedEncodingException e) {
}
Transaction tx =
blocks.transaction(
source, "", BigInteger.ZERO, BigInteger.valueOf(Config.minFee), dataString);
return tx;
}
/**
* Increments value in each column. If the value is bounded type (e.g. short) it will cycle the
* values.
*/
private void generateRow() {
List<Object> newRow = new ArrayList<Object>(types.size());
String incrementedString = incrementString(staticStringValue, rowNumber);
for (Class<?> type : types) {
if (type.equals(Integer.class)) {
newRow.add(rowNumber.intValue());
} else if (type.equals(java.lang.Short.class)) {
newRow.add(rowNumber.shortValue());
} else if (type.equals(java.lang.Long.class)) {
newRow.add(rowNumber.longValue());
} else if (type.equals(java.lang.Float.class)) {
newRow.add(rowNumber.floatValue() / 10);
} else if (type.equals(java.lang.Double.class)) {
newRow.add(rowNumber.doubleValue() / 10);
} else if (type.equals(java.lang.Character.class)) {
newRow.add((char) ((((rowNumber.byteValue() & 0xff) + 2) % 26) + 97));
} else if (type.equals(java.lang.Byte.class)) {
newRow.add(rowNumber.byteValue());
} else if (type.equals(java.lang.Boolean.class)) {
newRow.add(rowNumber.intValue() % 2 != 0);
} else if (type.equals(java.math.BigInteger.class)) {
newRow.add(rowNumber);
} else if (type.equals(java.math.BigDecimal.class)) {
newRow.add(new BigDecimal(rowNumber, 1));
} else if (type.equals(java.sql.Date.class)) {
newRow.add(new Date(DAY_SECONDS * 1000 * (rowNumber.intValue() % DATE_PERIOD)));
} else if (type.equals(java.sql.Time.class)) {
newRow.add(new Time((rowNumber.intValue() % DAY_SECONDS) * 1000));
} else if (type.equals(java.sql.Timestamp.class)) {
newRow.add(new Timestamp(rowNumber.longValue()));
} else if (type.equals(TypeFacility.RUNTIME_TYPES.CLOB)) {
newRow.add(
this.config.getTypeFacility().convertToRuntimeType(incrementedString.toCharArray()));
} else if (type.equals(TypeFacility.RUNTIME_TYPES.BLOB)
|| type.equals(TypeFacility.RUNTIME_TYPES.VARBINARY)) {
newRow.add(
this.config.getTypeFacility().convertToRuntimeType(incrementedString.getBytes()));
} else {
newRow.add(incrementedString);
}
}
row = newRow;
}
protected void convertNumberToDouble() throws IOException, JsonParseException {
/* 05-Aug-2008, tatus: Important note: this MUST start with
* more accurate representations, since we don't know which
* value is the original one (others get generated when
* requested)
*/
if ((_numTypesValid & NR_BIGDECIMAL) != 0) {
_numberDouble = _numberBigDecimal.doubleValue();
} else if ((_numTypesValid & NR_BIGINT) != 0) {
_numberDouble = _numberBigInt.doubleValue();
} else if ((_numTypesValid & NR_LONG) != 0) {
_numberDouble = (double) _numberLong;
} else if ((_numTypesValid & NR_INT) != 0) {
_numberDouble = (double) _numberInt;
} else {
_throwInternal(); // should never get here
}
_numTypesValid |= NR_DOUBLE;
}
/**
* Type converts values to other classes. For example an Integer can be converted to a Long.
*
* @param <T> Data Type.
* @param value The value to be converted.
* @param to The class to be converted to. Must be one of the Java types corresponding to the
* DataTypes.
* @return The converted value.
* @throws TypeMismatchException Thrown desired class is incompatible with the source class.
* @throws OverflowException Thrown only on narrowing value conversions, e.g from a BigInteger to
* an Integer.
*/
@Nullable
public static <T> T convert(Object value, Class<?> to)
throws TypeMismatchException, OverflowException {
final Object result;
if (value == null || value.getClass() == to) {
result = value;
} else {
final Class<?> from = value.getClass();
try {
if (from == Integer.class) { // Integer -> ...
if (to == Long.class) {
result = new Long(((Number) value).longValue());
} else if (to == BigInteger.class) {
result = BigInteger.valueOf(((Number) value).intValue());
} else if (to == Float.class) {
result = new Float(((Number) value).floatValue());
} else if (to == Double.class) {
result = new Double(((Number) value).doubleValue());
} else if (to == BigDecimal.class) {
// Use intValue() to avoid precision errors
result = new BigDecimal(((Number) value).intValue());
} else {
throw new TypeMismatchException(value.getClass(), to);
}
} else if (from == Long.class) { // Long -> ...
if (to == Integer.class) {
final long l = ((Long) value).longValue();
if (l < Integer.MIN_VALUE || l > Integer.MAX_VALUE) {
throw new OverflowException((Number) value, to);
}
result = new Integer((int) l);
} else if (to == BigInteger.class) {
result = BigInteger.valueOf(((Number) value).longValue());
} else if (to == Float.class) {
result = new Float(((Number) value).floatValue());
} else if (to == Double.class) {
result = new Double(((Number) value).doubleValue());
} else if (to == BigDecimal.class) {
// Use longValue() to avoid precision errors
result = new BigDecimal(((Number) value).longValue());
} else {
throw new TypeMismatchException(value.getClass(), to);
}
} else if (from == BigInteger.class) { // BigInteger -> ...
final BigInteger bi = (BigInteger) value;
if (to == Integer.class) {
result = new Integer(bi.intValueExact());
} else if (to == Long.class) {
result = new Long(bi.longValueExact());
} else if (to == Float.class) {
final float f1 = bi.floatValue();
if (f1 == Float.NEGATIVE_INFINITY || f1 == Float.POSITIVE_INFINITY) {
throw new OverflowException(bi, to);
}
result = new Float(f1);
} else if (to == Double.class) {
final double d = bi.doubleValue();
if (d == Double.NEGATIVE_INFINITY || d == Double.POSITIVE_INFINITY) {
throw new OverflowException(bi, to);
}
result = new Double(d);
} else if (to == BigDecimal.class) {
result = new BigDecimal(bi);
} else {
throw new TypeMismatchException(value.getClass(), to);
}
} else if (from == Float.class) { // Float -> ...
final float fl = ((Float) value).floatValue();
if (to == Integer.class) {
if (fl < Integer.MIN_VALUE || fl > Integer.MAX_VALUE | fl % 1 > 0) {
throw new OverflowException((Number) value, to);
}
result = new Integer((int) fl);
} else if (to == Long.class) {
if (fl < Long.MIN_VALUE || fl > Long.MAX_VALUE | fl % 1 > 0) {
throw new OverflowException((Number) value, to);
}
result = new Long((long) fl);
} else if (to == BigInteger.class) {
if (fl % 1 > 0) {
throw new OverflowException((Number) value, to);
}
final BigDecimal bd = BigDecimal.valueOf(fl);
result = bd.toBigInteger();
} else if (to == Double.class) {
result = new Double(((Number) value).doubleValue());
} else if (to == BigDecimal.class) {
result = BigDecimal.valueOf(fl);
} else {
throw new TypeMismatchException(value.getClass(), to);
}
} else if (from == Double.class) { // Double -> ...
final double d = ((Double) value).doubleValue();
if (to == Integer.class) {
if (d < Integer.MIN_VALUE || d > Integer.MAX_VALUE || d % 1 > 0) {
throw new OverflowException((Number) value, to);
}
result = new Integer((int) d);
} else if (to == Long.class) { // OK
if (d < Long.MIN_VALUE || d > Long.MAX_VALUE || d % 1 > 0) {
throw new OverflowException((Number) value, to);
}
result = new Long((int) d);
} else if (to == BigInteger.class) { // OK
if (d % 1 > 0) {
throw new OverflowException((Number) value, to);
}
final BigDecimal bd = BigDecimal.valueOf(d);
result = bd.toBigInteger();
} else if (to == Float.class) { // OK
if (d < -Float.MAX_VALUE || d > Float.MAX_VALUE) {
throw new OverflowException((Number) value, to);
}
result = new Float((float) d);
} else if (to == BigDecimal.class) { // OK
result = BigDecimal.valueOf(d);
} else {
throw new TypeMismatchException(value.getClass(), to);
}
} else if (from == BigDecimal.class) { // BigDecimal -> ...
final BigDecimal bd = (BigDecimal) value;
if (to == Integer.class) { // OK
result = new Integer(bd.intValueExact());
} else if (to == Long.class) { // OK
result = new Long(bd.longValueExact());
} else if (to == BigInteger.class) { // OK
// BigDecimal modulus
final BigDecimal remainder = bd.remainder(BigDecimal.ONE);
if (!remainder.equals(BigDecimal.ZERO)) {
throw new OverflowException(bd, to);
}
result = bd.toBigInteger();
} else if (to == Float.class) { // OK
if (bd.compareTo(BigDecimal_MIN_FLOAT) < 0 || bd.compareTo(BigDecimal_MAX_FLOAT) > 0) {
throw new OverflowException(bd, to);
}
result = new Float(bd.floatValue());
} else if (to == Double.class) { // OK
if (bd.compareTo(BigDecimal_MIN_DOUBLE) < 0
|| bd.compareTo(BigDecimal_MAX_DOUBLE) > 0) {
throw new OverflowException(bd, to);
}
result = new Double(bd.doubleValue());
} else {
throw new TypeMismatchException(value.getClass(), to);
}
} else {
throw new UnexpectedException("convert: " + from.getName());
}
} catch (final ArithmeticException e) {
// Thrown by intValueExact() etc.
throw new OverflowException((Number) value, to);
}
}
@SuppressWarnings("unchecked")
final T t = (T) result;
return t;
}
// TODO
public static double satoshiToBTC(BigInteger satoshis) {
return satoshis.doubleValue() / BTC.doubleValue();
}
/**
* Returns a <code>double</code> whose value is <tt>(this<sup>exponent</sup>)</tt>, returning the
* result in reduced form.
*
* @param exponent exponent to which this <code>BigFraction</code> is to be raised.
* @return <tt>this<sup>exponent</sup></tt>.
*/
public double pow(final double exponent) {
return Math.pow(numerator.doubleValue(), exponent)
/ Math.pow(denominator.doubleValue(), exponent);
}
/**
* Gets the fraction as a <tt>double</tt>. This calculates the fraction as the numerator divided
* by denominator.
*
* @return the fraction as a <tt>double</tt>
* @see java.lang.Number#doubleValue()
*/
@Override
public double doubleValue() {
return numerator.doubleValue() / denominator.doubleValue();
}
private void refreshVirtualNodes(Host host, LinkedList<ChordRoutingTable> deleted) {
if (host != null) {
for (AbstractChordRoutingTable rt :
((ChordNode) host.getOverlay(AbstractChordNode.class)).getVirtualNodes()) {
// check if this virtual node does not exist:
if (!virtualNodes.containsKey(((ChordRoutingTable) rt).getChordId())) {
// create node!
// TODO: this is quite sick hacked together!
NetID n =
new NetID() {
@Override
public long getTransmissionSize() {
return 0;
}
};
// create attributes
Map<String, Serializable> attributes = new LinkedHashMap<String, Serializable>();
attributes.put("ChordID", ((ChordRoutingTable) rt).getChordId());
// compute position on ring:
double div = 0.0;
BigInteger MAX_KEY_SIZE =
new BigInteger("1461501637330902918203684832716283019655932542975");
div =
((ChordRoutingTable) rt).getChordId().getValue().doubleValue()
/ MAX_KEY_SIZE.doubleValue();
float x = 0.5f + 0.4f * (float) Math.sin(2 * Math.PI * div);
float y = 0.5f + 0.4f * (float) Math.cos(2 * Math.PI * div);
// add virtual node to visualisation
getTranslator()
.overlayNodeAdded(n, "vNode", new PositionInfo(new Coords(x, y)), attributes);
virtualNodes.put(((ChordRoutingTable) rt).getChordId(), n);
// add edge from real node to virtual node:
EdgeHandle h =
this.addEdge(
rt.getMasterNode().getHost().getNetLayer().getNetID(),
n,
Color.BLUE,
"virtualNodeEdge");
virtualNodeEdges.put(((ChordRoutingTable) rt).getChordId(), h);
}
}
// remove thoses who have been deleted:
if (deleted != null) {
for (AbstractChordRoutingTable rt : deleted) {
if (virtualNodeEdges.containsKey(((ChordRoutingTable) rt).getChordId())) {
virtualNodeEdges.get(((ChordRoutingTable) rt).getChordId()).remove();
}
if (virtualNodes.containsKey(((ChordRoutingTable) rt).getChordId())) {
getTranslator()
.overlayNodeRemoved(virtualNodes.get(((ChordRoutingTable) rt).getChordId()));
}
}
}
}
}
@Override
public double doubleValue() {
return value.doubleValue();
}
public static void parse(Integer txIndex, List<Byte> message) {
Database db = Database.getInstance();
ResultSet rs =
db.executeQuery("select * from transactions where tx_index=" + txIndex.toString());
try {
if (rs.next()) {
String source = rs.getString("source");
String destination = rs.getString("destination");
BigInteger btcAmount = BigInteger.valueOf(rs.getLong("btc_amount"));
BigInteger fee = BigInteger.valueOf(rs.getLong("fee"));
Integer blockIndex = rs.getInt("block_index");
String txHash = rs.getString("tx_hash");
ResultSet rsCheck =
db.executeQuery("select * from bets where tx_index='" + txIndex.toString() + "'");
if (rsCheck.next()) return;
if (message.size() == length) {
ByteBuffer byteBuffer = ByteBuffer.allocate(length);
for (byte b : message) {
byteBuffer.put(b);
}
BigInteger bet = BigInteger.valueOf(byteBuffer.getLong(0));
Double chance = byteBuffer.getDouble(8);
Double payout = byteBuffer.getDouble(16);
Double houseEdge = Config.houseEdge;
// PROTOCOL CHANGE
Double oldHouseEdge = 0.02;
Boolean payoutChanceCongruent =
Util.roundOff(chance, 6) == Util.roundOff(100.0 / (payout / (1.0 - houseEdge)), 6)
|| Util.roundOff(chance, 6)
== Util.roundOff(100.0 / (payout / (1.0 - oldHouseEdge)), 6);
BigInteger chaSupply = Util.chaSupplyForBetting();
String validity = "invalid";
if (!source.equals("")
&& bet.compareTo(BigInteger.ZERO) > 0
&& chance > 0.0
&& chance < 100.0
&& payout > 1.0
&& payoutChanceCongruent) {
if (bet.compareTo(Util.getBalance(source, "CHA")) <= 0) {
if ((payout - 1.0) * bet.doubleValue() < chaSupply.doubleValue() * Config.maxProfit) {
validity = "valid";
Util.debit(source, "CHA", bet, "Debit bet amount", txHash, blockIndex);
}
}
}
db.executeUpdate(
"insert into bets(tx_index, tx_hash, block_index, source, bet, chance, payout, profit, cha_supply, validity) values('"
+ txIndex.toString()
+ "','"
+ txHash
+ "','"
+ blockIndex.toString()
+ "','"
+ source
+ "','"
+ bet.toString()
+ "','"
+ chance.toString()
+ "','"
+ payout.toString()
+ "','0','"
+ chaSupply.toString()
+ "','"
+ validity
+ "')");
}
}
} catch (SQLException e) {
}
}
public static double doubleDivFromLargeInteger_(int receiver, BigInteger argument) {
return (argument.doubleValue() / receiver);
}
@Specialization
public double atan2(double a, BigInteger b) {
return Math.atan2(a, b.doubleValue());
}
public double getDouble() {
if (isPosInfinity()) return Double.POSITIVE_INFINITY;
if (isNegInfinity()) return Double.NEGATIVE_INFINITY;
return m_value.doubleValue();
}
public static float floatDivFromLargeInteger_(int receiver, BigInteger argument) {
return (float) (argument.doubleValue() / receiver);
}
@Specialization
public double atan2(BigInteger a, double b) {
return Math.atan2(a.doubleValue(), b);
}
public static double LIntFloat(BigInteger x) {
return x.doubleValue();
}
public static void resolve() {
// resolve bets
logger.info("Resolving bets");
Database db = Database.getInstance();
ResultSet rs =
db.executeQuery(
"select block_time,blocks.block_index as block_index,tx_index,tx_hash,source,bet,payout,chance,cha_supply from bets,blocks where bets.block_index=blocks.block_index and bets.validity='valid' and bets.resolved IS NOT 'true';");
// if (true) return;
SimpleDateFormat dateFormatStandard = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss z");
SimpleDateFormat dateFormatDateTimeLotto = new SimpleDateFormat("MM/dd/yyyy HH:mm");
SimpleDateFormat dateFormatDateLotto = new SimpleDateFormat("dd/MM/yyyy");
SimpleDateFormat dateFormatHour = new SimpleDateFormat("HH");
SimpleDateFormat dateFormatMinute = new SimpleDateFormat("mm");
TimeZone newYork = TimeZone.getTimeZone("America/New_York");
TimeZone UTC = TimeZone.getTimeZone("UTC");
dateFormatStandard.setTimeZone(UTC);
dateFormatDateLotto.setTimeZone(newYork);
dateFormatDateTimeLotto.setTimeZone(newYork);
dateFormatHour.setTimeZone(newYork);
dateFormatMinute.setTimeZone(newYork);
try {
while (rs.next()) {
String source = rs.getString("source");
String txHash = rs.getString("tx_hash");
Integer txIndex = rs.getInt("tx_index");
Integer blockIndex = rs.getInt("block_index");
BigInteger bet = BigInteger.valueOf(rs.getLong("bet"));
Double payout = rs.getDouble("payout");
Double chance = rs.getDouble("chance");
BigInteger chaSupply = BigInteger.valueOf(rs.getLong("cha_supply"));
Date blockTime = new Date((long) rs.getLong("block_time") * 1000);
logger.info("Attempting to resolve bet " + txHash);
String lottoDate = dateFormatDateLotto.format(blockTime);
Integer hour = Integer.parseInt(dateFormatHour.format(blockTime));
Integer minute = Integer.parseInt(dateFormatMinute.format(blockTime));
if (hour >= 23 && minute >= 56) {
lottoDate = dateFormatDateLotto.format(addDays(blockTime, 1));
}
String lottoUrl =
"http://nylottery.ny.gov/wps/PA_NYSLNumberCruncher/NumbersServlet?game=quick&action=winningnumbers&startSearchDate="
+ lottoDate
+ "&endSearchDate=&pageNo=&last=&perPage=999&sort=";
String lottoPage = Util.getPage(lottoUrl);
logger.info("Getting lottery numbers " + lottoUrl);
try {
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
LottoResult lottoMap = objectMapper.readValue(lottoPage, LottoResult.class);
for (LottoDraw draw : lottoMap.draw) {
Date time = dateFormatDateTimeLotto.parse(draw.date);
if (time.after(blockTime)) {
logger.info("Found lottery numbers we can use to resolve bet");
BigInteger denominator =
combinations(BigInteger.valueOf(80), BigInteger.valueOf(20))
.subtract(BigInteger.ONE);
BigInteger n = BigInteger.ZERO;
BigInteger i = BigInteger.ONE;
for (BigInteger number : draw.numbersDrawn) {
n = n.add(combinations(number.subtract(BigInteger.ONE), i));
i = i.add(BigInteger.ONE);
}
Double rollA = n.doubleValue() / (denominator.doubleValue());
Double rollB =
(new BigInteger(txHash.substring(10, txHash.length()), 16))
.mod(BigInteger.valueOf(1000000000))
.doubleValue()
/ 1000000000.0;
Double roll = (rollA + rollB) % 1.0;
roll = roll * 100.0;
logger.info("Roll = " + roll.toString() + ", chance = " + chance.toString());
BigInteger profit = BigInteger.ZERO;
if (roll < chance) {
logger.info("The bet is a winner");
// win
profit =
new BigDecimal(
bet.doubleValue()
* (payout.doubleValue() - 1.0)
* chaSupply.doubleValue()
/ (chaSupply.doubleValue()
- bet.doubleValue() * payout.doubleValue()))
.toBigInteger();
BigInteger credit = profit.add(bet);
Util.credit(source, "CHA", credit, "Bet won", txHash, blockIndex);
} else {
logger.info("The bet is a loser");
// lose
profit = bet.multiply(BigInteger.valueOf(-1));
}
db.executeUpdate(
"update bets set profit='"
+ profit.toString()
+ "', rolla='"
+ (rollA * 100.0)
+ "', rollb='"
+ (rollB * 100.0)
+ "', roll='"
+ roll
+ "', resolved='true' where tx_index='"
+ txIndex
+ "';");
break;
}
}
} catch (Exception e) {
logger.error(e.toString());
}
}
} catch (SQLException e) {
logger.error(e.toString());
}
}
/**
* @param value the value to divide
* @param divisor the # to divide value by
* @return String null if value or divisor is null other the resulting double value as a string
*/
private String divide(BigInteger value, BigInteger divisor) {
if (divisor == null || value == null) return null;
if (divisor.longValue() == 0) return new String("0");
return Double.toString(value.doubleValue() / divisor.longValue());
}
public static List<BetInfo> getPending(String source) {
Database db = Database.getInstance();
ResultSet rs =
db.executeQuery(
"select * from transactions where block_index<0 and source='"
+ source
+ "' order by tx_index desc;");
List<BetInfo> bets = new ArrayList<BetInfo>();
Blocks blocks = Blocks.getInstance();
try {
while (rs.next()) {
String destination = rs.getString("destination");
BigInteger btcAmount = BigInteger.valueOf(rs.getLong("btc_amount"));
BigInteger fee = BigInteger.valueOf(rs.getLong("fee"));
Integer blockIndex = rs.getInt("block_index");
String txHash = rs.getString("tx_hash");
Integer txIndex = rs.getInt("tx_index");
String dataString = rs.getString("data");
ResultSet rsCheck =
db.executeQuery("select * from bets where tx_index='" + txIndex.toString() + "'");
if (!rsCheck.next()) {
List<Byte> messageType = blocks.getMessageTypeFromTransaction(dataString);
List<Byte> message = blocks.getMessageFromTransaction(dataString);
if (messageType.get(3) == Bet.id.byteValue() && message.size() == length) {
ByteBuffer byteBuffer = ByteBuffer.allocate(length);
for (byte b : message) {
byteBuffer.put(b);
}
BigInteger bet = BigInteger.valueOf(byteBuffer.getLong(0));
Double chance = byteBuffer.getDouble(8);
Double payout = byteBuffer.getDouble(16);
Double houseEdge = Config.houseEdge;
// PROTOCOL CHANGE
Double oldHouseEdge = 0.02;
Boolean payoutChanceCongruent =
Util.roundOff(chance, 6) == Util.roundOff(100.0 / (payout / (1.0 - houseEdge)), 6)
|| Util.roundOff(chance, 6)
== Util.roundOff(100.0 / (payout / (1.0 - oldHouseEdge)), 6);
BigInteger chaSupply = Util.chaSupplyForBetting();
String validity = "invalid";
if (!source.equals("")
&& bet.compareTo(BigInteger.ZERO) > 0
&& chance > 0.0
&& chance < 100.0
&& payout > 1.0
&& payoutChanceCongruent) {
if (bet.compareTo(Util.getBalance(source, "CHA")) <= 0) {
if ((payout - 1.0) * bet.doubleValue()
< chaSupply.doubleValue() * Config.maxProfit) {
BetInfo betInfo = new BetInfo();
betInfo.bet = bet;
betInfo.chance = chance;
betInfo.payout = payout;
betInfo.source = source;
betInfo.txHash = txHash;
bets.add(betInfo);
}
}
}
}
}
}
} catch (SQLException e) {
}
return bets;
}
public static BigDecimal sqrt(BigDecimal squarD, int scalar) {
// Static constants - perhaps initialize in class Vladimir!
BigDecimal TWO = new BigDecimal(2);
double SQRT_10 = 3.162277660168379332;
MathContext rootMC = new MathContext(scalar);
// General number and precision checking
int sign = squarD.signum();
if (sign == -1) throw new ArithmeticException("\nSquare root of a negative number: " + squarD);
else if (sign == 0) return squarD.round(rootMC);
int prec = rootMC.getPrecision(); // the requested precision
if (prec == 0)
throw new IllegalArgumentException("\nMost roots won't have infinite precision = 0");
// Initial precision is that of double numbers 2^63/2 ~ 4E18
int BITS = 62; // 63-1 an even number of number bits
int nInit = 16; // precision seems 16 to 18 digits
MathContext nMC = new MathContext(18, RoundingMode.HALF_UP);
// Iteration variables, for the square root x and the reciprocal v
BigDecimal x = null, e = null; // initial x: x0 ~ sqrt()
BigDecimal v = null, g = null; // initial v: v0 = 1/(2*x)
// Estimate the square root with the foremost 62 bits of squarD
BigInteger bi = squarD.unscaledValue(); // bi and scale are a tandem
int biLen = bi.bitLength();
int shift = Math.max(0, biLen - BITS + (biLen % 2 == 0 ? 0 : 1)); // even
// shift..
bi = bi.shiftRight(shift); // ..floors to 62 or 63 bit BigInteger
double root = Math.sqrt(bi.doubleValue());
BigDecimal halfBack = new BigDecimal(BigInteger.ONE.shiftLeft(shift / 2));
int scale = squarD.scale();
if (scale % 2 == 1) // add half scales of the root to odds..
root *= SQRT_10; // 5 -> 2, -5 -> -3 need half a scale more..
scale = (int) Math.floor(scale / 2.); // ..where 100 -> 10 shifts the
// scale
// Initial x - use double root - multiply by halfBack to unshift - set
// new scale
x = new BigDecimal(root, nMC);
x = x.multiply(halfBack, nMC); // x0 ~ sqrt()
if (scale != 0) x = x.movePointLeft(scale);
if (prec < nInit) // for prec 15 root x0 must surely be OK
return x.round(rootMC); // return small prec roots without
// iterations
// Initial v - the reciprocal
v = BigDecimal.ONE.divide(TWO.multiply(x), nMC); // v0 = 1/(2*x)
// Collect iteration precisions beforehand
ArrayList<Integer> nPrecs = new ArrayList<Integer>();
assert nInit > 3 : "Never ending loop!"; // assume nInit = 16 <= prec
// Let m be the exact digits precision in an earlier! loop
for (int m = prec + 1; m > nInit; m = m / 2 + (m > 100 ? 1 : 2)) nPrecs.add(m);
// The loop of "Square Root by Coupled Newton Iteration" for simpletons
for (int i = nPrecs.size() - 1; i > -1; i--) {
// Increase precision - next iteration supplies n exact digits
nMC =
new MathContext(
nPrecs.get(i), (i % 2 == 1) ? RoundingMode.HALF_UP : RoundingMode.HALF_DOWN);
// Next x // e = d - x^2
e = squarD.subtract(x.multiply(x, nMC), nMC);
if (i != 0) x = x.add(e.multiply(v, nMC)); // x += e*v ~ sqrt()
else {
x = x.add(e.multiply(v, rootMC), rootMC); // root x is ready!
break;
}
// Next v // g = 1 - 2*x*v
g = BigDecimal.ONE.subtract(TWO.multiply(x).multiply(v, nMC));
v = v.add(g.multiply(v, nMC)); // v += g*v ~ 1/2/sqrt()
}
return x; // return sqrt(squarD) with precision of rootMC
}