java.math.BigInteger.longValue()方法的使用及代码示例

x33g5p2x  于2022-01-16 转载在 其他  
字(7.8k)|赞(0)|评价(0)|浏览(270)

本文整理了Java中java.math.BigInteger.longValue()方法的一些代码示例，展示了BigInteger.longValue()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.longValue()方法的具体详情如下：
包路径：java.math.BigInteger
类名称：BigInteger
方法名：longValue

BigInteger.longValue介绍

[英]Returns this BigInteger as a long value. If this is too big to be represented as a long, then this % pow(2, 64) is returned.
[中]将此BigInteger作为长值返回。如果该值太大，无法表示为long，则返回该%pow（2，64）。

代码示例

代码示例来源：origin: spring-projects/spring-framework

public AlternativeJdkIdGenerator() {
  SecureRandom secureRandom = new SecureRandom();
  byte[] seed = new byte[8];
  secureRandom.nextBytes(seed);
  this.random = new Random(new BigInteger(seed).longValue());
}

代码示例来源：origin: ethereum/ethereumj

private byte getRealV(BigInteger bv) {
  if (bv.bitLength() > 31) return 0; // chainId is limited to 31 bits, longer are not valid for now
  long v = bv.longValue();
  if (v == LOWER_REAL_V || v == (LOWER_REAL_V + 1)) return (byte) v;
  byte realV = LOWER_REAL_V;
  int inc = 0;
  if ((int) v % 2 == 0) inc = 1;
  return (byte) (realV + inc);
}

代码示例来源：origin: apache/flink

@Override
protected long vertexCount() {
  BigInteger vertexCount = BigInteger.ONE;
  for (Dimension dimension : dimensions) {
    vertexCount = vertexCount.multiply(BigInteger.valueOf(dimension.size));
  }
  if (vertexCount.compareTo(BigInteger.valueOf(Long.MAX_VALUE)) > 0) {
    throw new ProgramParametrizationException("Number of vertices in grid graph '" + vertexCount +
      "' is greater than Long.MAX_VALUE.");
  }
  return vertexCount.longValue();
}

代码示例来源：origin: redisson/redisson

BigInteger n = new BigInteger(_cleanedTextValue);
if (len == 19 && n.bitLength() <= 63) {
  _numberLong = n.longValue();
  _numTypesValid = NR_LONG;
  return;

代码示例来源：origin: org.apache.poi/poi

/**
 * Converts a {@link Date} into a filetime.
 *
 * @param date The date to be converted
 * @return The filetime
 *
 * @see #filetimeToDate(long)
 */
public static long dateToFileTime(final Date date) {
  return BigInteger.valueOf(date.getTime()).subtract(EPOCH_DIFF).multiply(NANO_100).longValue();
}

代码示例来源：origin: ethereum/ethereumj

BigInteger txGasLimit = new BigInteger(1, tx.getGasLimit());
BigInteger curBlockGasLimit = new BigInteger(1, currentBlock.getGasLimit());
boolean cumulativeGasReached = txGasLimit.add(BigInteger.valueOf(gasUsedInTheBlock)).compareTo(curBlockGasLimit) > 0;
if (cumulativeGasReached) {
  execError(String.format("Too much gas used in this block: Require: %s Got: %s", new BigInteger(1, currentBlock.getGasLimit()).longValue() - toBI(tx.getGasLimit()).longValue(), toBI(tx.getGasLimit()).longValue()));
if (txGasLimit.compareTo(BigInteger.valueOf(basicTxCost)) < 0) {

代码示例来源：origin: org.apache.ant/ant

private static long parseBinaryBigInteger(final byte[] buffer,
                     final int offset,
                     final int length,
                     final boolean negative) {
  final byte[] remainder = new byte[length - 1];
  System.arraycopy(buffer, offset + 1, remainder, 0, length - 1);
  BigInteger val = new BigInteger(remainder);
  if (negative) {
    // 2's complement
    val = val.add(BigInteger.valueOf(-1)).not();
  }
  if (val.bitLength() > 63) {
    throw new IllegalArgumentException(String.format(
        "At offset %d, %d byte binary number exceeds maximum signed long value",
        offset, length));
  }
  return negative ? -val.longValue() : val.longValue();
}

代码示例来源：origin: square/wire

@Override public Long fromJson(JsonReader reader) throws IOException {
 BigInteger bigInteger = new BigInteger(reader.nextString());
 return bigInteger.compareTo(maxLong) > 0
   ? bigInteger.subtract(power64).longValue()
   : bigInteger.longValue();
}

代码示例来源：origin: ethereum/ethereumj

BigInteger max = BigInteger.valueOf(2).pow(255);
byte[] target = BigIntegers.asUnsignedByteArray(32,
    max.divide(new BigInteger(1, difficulty)));
    (new BigInteger(1, newBlock.getGasLimit()).longValue() * (1024 - 1) + (newBlock.getGasUsed() * 6 / 5)) / 1024);
newBlock.getHeader().setGasLimit(BigInteger.valueOf(newGasLimit).toByteArray());
    System.out.println("mining: " + new BigInteger(1, testNonce));

代码示例来源：origin: google/guava

private static long saturatedCast(BigInteger big) {
 if (big.compareTo(MAX_LONG) > 0) {
  return Long.MAX_VALUE;
 }
 if (big.compareTo(MIN_LONG) < 0) {
  return Long.MIN_VALUE;
 }
 return big.longValue();
}

代码示例来源：origin: robovm/robovm

if(scaledDivisor.bitLength() < 63) { // 63 in order to avoid out of long after *2
  long rem = remainder.longValue();
  long divisor = scaledDivisor.longValue();
  compRem = longCompareTo(Math.abs(rem) * 2,Math.abs(divisor));
  compRem = remainder.abs().shiftLeftOneBit().compareTo(scaledDivisor.abs());
  compRem = roundingBehavior(quotient.testBit(0) ? 1 : 0,
      sign * (5 + compRem), roundingMode);
  if(quotient.bitLength() < 63) {
    return valueOf(quotient.longValue() + compRem,scale);
  quotient = quotient.add(BigInteger.valueOf(compRem));
  return new BigDecimal(quotient, scale);

代码示例来源：origin: ethereum/ethereumj

public long getCumulativeGasLong() {
  return new BigInteger(1, cumulativeGas).longValue();
}

代码示例来源：origin: google/guava

checkNonNegative("x", x);
if (fitsInLong(x)) {
 return BigInteger.valueOf(LongMath.sqrt(x.longValue(), mode));
  return (halfSquare.compareTo(x) >= 0) ? sqrtFloor : sqrtFloor.add(BigInteger.ONE);
 default:
  throw new AssertionError();

代码示例来源：origin: osmandapp/Osmand

BigInteger bigValue = new BigInteger(numberText, radix);
if (negative) {
 bigValue = bigValue.negate();
  if (bigValue.bitLength() > 31) {
   throw new NumberFormatException(
    "Number out of range for 32-bit signed integer: " + text);
  if (bigValue.bitLength() > 32) {
   throw new NumberFormatException(
    "Number out of range for 32-bit unsigned integer: " + text);
  if (bigValue.bitLength() > 63) {
   throw new NumberFormatException(
    "Number out of range for 64-bit signed integer: " + text);
result = bigValue.longValue();

代码示例来源：origin: debezium/debezium

private static LocalDateTime nanosToLocalDateTimeUTC(long epocNanos) {
  // the pg plugin stores date/time info as microseconds since epoch
  BigInteger epochMicrosBigInt = BigInteger.valueOf(epocNanos);
  BigInteger[] secondsAndNanos = epochMicrosBigInt.divideAndRemainder(BigInteger.valueOf(TimeUnit.SECONDS.toNanos(1)));
  return LocalDateTime.ofInstant(Instant.ofEpochSecond(secondsAndNanos[0].longValue(), secondsAndNanos[1].longValue()),
                  ZoneOffset.UTC);
}

代码示例来源：origin: org.apache.commons/commons-compress

private static long parseBinaryBigInteger(final byte[] buffer,
                     final int offset,
                     final int length,
                     final boolean negative) {
  final byte[] remainder = new byte[length - 1];
  System.arraycopy(buffer, offset + 1, remainder, 0, length - 1);
  BigInteger val = new BigInteger(remainder);
  if (negative) {
    // 2's complement
    val = val.add(BigInteger.valueOf(-1)).not();
  }
  if (val.bitLength() > 63) {
    throw new IllegalArgumentException("At offset " + offset + ", "
                      + length + " byte binary number"
                      + " exceeds maximum signed long"
                      + " value");
  }
  return negative ? -val.longValue() : val.longValue();
}

代码示例来源：origin: apache/incubator-shardingsphere

/**
   * Get exactly number value and type.
   * 
   * @param value string to be converted
   * @param radix radix
   * @return exactly number value and type
   */
  public static Number getExactlyNumber(final String value, final int radix) {
    BigInteger result = new BigInteger(value, radix);
    if (result.compareTo(new BigInteger(String.valueOf(Integer.MIN_VALUE))) >= 0 && result.compareTo(new BigInteger(String.valueOf(Integer.MAX_VALUE))) <= 0) {
      return result.intValue();
    }
    if (result.compareTo(new BigInteger(String.valueOf(Long.MIN_VALUE))) >= 0 && result.compareTo(new BigInteger(String.valueOf(Long.MAX_VALUE))) <= 0) {
      return result.longValue();
    }
    return result;
  }
}

代码示例来源：origin: hierynomus/sshj

public T putUInt64(BigInteger uint64) {
  if (uint64.compareTo(MAX_UINT64_VALUE) > 0 ||
      uint64.compareTo(BigInteger.ZERO) < 0) {
    throw new IllegalArgumentException("Invalid value: " + uint64);
  }
  return putUInt64Unchecked(uint64.longValue());
}

代码示例来源：origin: robovm/robovm

private void setUnscaledValue(BigInteger unscaledValue) {
  this.intVal = unscaledValue;
  this.bitLength = unscaledValue.bitLength();
  if(this.bitLength < 64) {
    this.smallValue = unscaledValue.longValue();
  }
}

代码示例来源：origin: robovm/robovm

compRem = quotAndRem[1].shiftLeftOneBit().compareTo(powerOfTen);
      BigInteger.valueOf((compRem * (compRem + 3)) / 2 + 1));
  exponent -= 2;
discardedSize = mantissa.bitLength() - 54;
if (discardedSize > 0) {// (n > 54)
  bits = mantissa.shiftRight(discardedSize).longValue();
  tempBits = bits;
  bits = mantissa.longValue() << -discardedSize;
  tempBits = bits;

内容来源于网络，如有侵权，请联系作者删除！

BigInteger

相关文章

    查看更多

    热门标签

    更多
    JavaquerypythonNode开发语言requestUtil数据库Table后端算法LoggerMessageElementParser

    最新文章

    更多

    BigInteger类方法

    • 蜀ICP备2022004421号-2 NULL123 https://www.null123.com © All rights reserved
    • 本站内容来源互联网,如果侵犯您的权益请联系我们删除, 联系方式：448109455@qq.com