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

x33g5p2x  于2022-01-16 转载在 其他  
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本文整理了Java中java.math.BigInteger.divide()方法的一些代码示例，展示了BigInteger.divide()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.divide()方法的具体详情如下：
包路径：java.math.BigInteger
类名称：BigInteger
方法名：divide

BigInteger.divide介绍

[英]Returns a BigInteger whose value is this / divisor.
[中]返回一个BigInteger，其值为this/除数。

代码示例

代码示例来源：origin: stackoverflow.com

static BigInteger binomial(final int N, final int K) {
  BigInteger ret = BigInteger.ONE;
  for (int k = 0; k < K; k++) {
    ret = ret.multiply(BigInteger.valueOf(N-k))
         .divide(BigInteger.valueOf(k+1));
  }
  return ret;
}

//...
System.out.println(binomial(133, 71));
// prints "555687036928510235891585199545206017600"

代码示例来源：origin: apache/hive

/**
 * Scale down a BigInteger by a power of 10 and round off if necessary using ROUND_HALF_UP.
 * @return The scaled and rounded BigInteger.
 */
private static BigInteger doBigIntegerScaleDown(BigInteger unscaledValue, int scaleDown) {
 BigInteger[] quotientAndRemainder = unscaledValue.divideAndRemainder(BigInteger.TEN.pow(scaleDown));
 BigInteger quotient = quotientAndRemainder[0];
 BigInteger round = quotientAndRemainder[1].divide(BigInteger.TEN.pow(scaleDown - 1));
 if (round.compareTo(BIG_INTEGER_FIVE) >= 0) {
  quotient = quotient.add(BigInteger.ONE);
 }
 return quotient;
}

代码示例来源：origin: commons-io/commons-io

String displaySize;
if (size.divide(ONE_EB_BI).compareTo(BigInteger.ZERO) > 0) {
  displaySize = String.valueOf(size.divide(ONE_EB_BI)) + " EB";
} else if (size.divide(ONE_PB_BI).compareTo(BigInteger.ZERO) > 0) {
  displaySize = String.valueOf(size.divide(ONE_PB_BI)) + " PB";
} else if (size.divide(ONE_TB_BI).compareTo(BigInteger.ZERO) > 0) {
  displaySize = String.valueOf(size.divide(ONE_TB_BI)) + " TB";
} else if (size.divide(ONE_GB_BI).compareTo(BigInteger.ZERO) > 0) {
  displaySize = String.valueOf(size.divide(ONE_GB_BI)) + " GB";
} else if (size.divide(ONE_MB_BI).compareTo(BigInteger.ZERO) > 0) {
  displaySize = String.valueOf(size.divide(ONE_MB_BI)) + " MB";
} else if (size.divide(ONE_KB_BI).compareTo(BigInteger.ZERO) > 0) {
  displaySize = String.valueOf(size.divide(ONE_KB_BI)) + " KB";
} else {
  displaySize = String.valueOf(size) + " bytes";

代码示例来源：origin: apache/hbase

/**
 * Divide 2 numbers in half (for split algorithm)
 *
 * @param a number #1
 * @param b number #2
 * @return the midpoint of the 2 numbers
 */
public BigInteger split2(BigInteger a, BigInteger b) {
 return a.add(b).divide(BigInteger.valueOf(2)).abs();
}

代码示例来源：origin: ethereum/ethereumj

public long mine(long fullSize, byte[][] dataset, byte[] blockHeaderTruncHash, long difficulty) {
  BigInteger target = valueOf(2).pow(256).divide(valueOf(difficulty));
  long nonce = new Random().nextLong();
  while(!Thread.currentThread().isInterrupted()) {
    nonce++;
    Pair<byte[], byte[]> pair = hashimotoFull(fullSize, dataset, blockHeaderTruncHash, longToBytes(nonce));
    BigInteger h = new BigInteger(1, pair.getRight() /* ?? */);
    if (h.compareTo(target) < 0) break;
  }
  return nonce;
}

代码示例来源：origin: google/guava

BigInteger sqrt1 = sqrt0.add(x.divide(sqrt0)).shiftRight(1);
if (sqrt0.equals(sqrt1)) {
 return sqrt0;
 sqrt1 = sqrt0.add(x.divide(sqrt0)).shiftRight(1);
} while (sqrt1.compareTo(sqrt0) < 0);
return sqrt0;

代码示例来源：origin: google/guava

int approxCmp = approxPow.compareTo(x);
  approxPow = approxPow.divide(BigInteger.TEN);
  approxCmp = approxPow.compareTo(x);
 } while (approxCmp > 0);
} else {
 BigInteger nextPow = BigInteger.TEN.multiply(approxPow);
 int nextCmp = nextPow.compareTo(x);
 while (nextCmp <= 0) {
  approxLog10++;
  approxPow = nextPow;
  approxCmp = nextCmp;
  nextPow = BigInteger.TEN.multiply(approxPow);
  nextCmp = nextPow.compareTo(x);
  BigInteger halfPowerSquared = floorPow.pow(2).multiply(BigInteger.TEN);
  return (x2.compareTo(halfPowerSquared) <= 0) ? floorLog : floorLog + 1;
 default:

代码示例来源：origin: ethereum/ethereumj

@Override
public BigInteger calcDifficulty(BlockHeader curBlock, BlockHeader parent) {
  BigInteger pd = parent.getDifficultyBI();
  BigInteger quotient = pd.divide(getConstants().getDIFFICULTY_BOUND_DIVISOR());
  BigInteger sign = getCalcDifficultyMultiplier(curBlock, parent);
  BigInteger fromParent = pd.add(quotient.multiply(sign));
  BigInteger difficulty = max(getConstants().getMINIMUM_DIFFICULTY(), fromParent);
  int explosion = getExplosion(curBlock, parent);
  if (explosion >= 0) {
    difficulty = max(getConstants().getMINIMUM_DIFFICULTY(), difficulty.add(BigInteger.ONE.shiftLeft(explosion)));
  }
  return difficulty;
}

代码示例来源：origin: prestodb/presto

@Test
public void testUnderflowAfterOverflow()
{
  addToState(state, TWO.pow(126));
  addToState(state, TWO.pow(126));
  addToState(state, TWO.pow(125));
  assertEquals(state.getOverflow(), 1);
  assertEquals(state.getLongDecimal(), unscaledDecimal(TWO.pow(125)));
  addToState(state, TWO.pow(126).negate());
  addToState(state, TWO.pow(126).negate());
  addToState(state, TWO.pow(126).negate());
  assertEquals(state.getOverflow(), 0);
  assertEquals(state.getLongDecimal(), unscaledDecimal(TWO.pow(125).negate()));
  assertEquals(average(state, TYPE), new BigDecimal(TWO.pow(125).negate().divide(BigInteger.valueOf(6))));
}

代码示例来源：origin: deeplearning4j/nd4j

/**
 * floor(): the nearest integer not greater than this.
 *
 * @return The integer rounded towards negative infinity.
 */
public BigInteger floor() {
  /* is already integer: return the numerator
   */
  if (b.compareTo(BigInteger.ONE) == 0) {
    return a;
  } else if (a.compareTo(BigInteger.ZERO) > 0) {
    return a.divide(b);
  } else {
    return a.divide(b).subtract(BigInteger.ONE);
  }
} /* Rational.floor */

代码示例来源：origin: apache/hive

bigInteger = bigInteger.multiply(BIG_INTEGER_TEN.pow(-scale));
scale = 0;
 bigInteger = bigInteger.divide(bigIntegerThrowAwayBelowRoundDigitDivisor);
  bigInteger = quotient.add(BigInteger.ONE);

代码示例来源：origin: kiegroup/optaplanner

@Override
public long getSize() {
  return to.subtract(from).divide(incrementUnit).longValue();
}

代码示例来源：origin: prestodb/presto

private void assertAddReturnOverflow(BigInteger left, BigInteger right)
{
  Slice result = unscaledDecimal();
  long overflow = addWithOverflow(unscaledDecimal(left), unscaledDecimal(right), result);
  BigInteger actual = unscaledDecimalToBigInteger(result);
  BigInteger expected = left.add(right).remainder(TWO.pow(UnscaledDecimal128Arithmetic.UNSCALED_DECIMAL_128_SLICE_LENGTH * 8 - 1));
  BigInteger expectedOverflow = left.add(right).divide(TWO.pow(UnscaledDecimal128Arithmetic.UNSCALED_DECIMAL_128_SLICE_LENGTH * 8 - 1));
  assertEquals(actual, expected);
  assertEquals(overflow, expectedOverflow.longValueExact());
}

代码示例来源：origin: robovm/robovm

/**
 * Returns this {@code BigDecimal} as a big integer instance. A fractional
 * part is discarded.
 *
 * @return this {@code BigDecimal} as a big integer instance.
 */
public BigInteger toBigInteger() {
  if ((scale == 0) || (isZero())) {
    return getUnscaledValue();
  } else if (scale < 0) {
    return getUnscaledValue().multiply(Multiplication.powerOf10(-(long)scale));
  } else {// (scale > 0)
    return getUnscaledValue().divide(Multiplication.powerOf10(scale));
  }
}

代码示例来源：origin: apache/activemq

private static String toHumanReadableSizeString(final BigInteger size) {
    String displaySize;

    final BigInteger ONE_KB_BI = BigInteger.valueOf(1024);
    final BigInteger ONE_MB_BI = ONE_KB_BI.multiply(ONE_KB_BI);
    final BigInteger ONE_GB_BI = ONE_KB_BI.multiply(ONE_MB_BI);

    if (size.divide(ONE_GB_BI).compareTo(BigInteger.ZERO) > 0) {
      displaySize = String.valueOf(size.divide(ONE_GB_BI)) + " GB";
    } else if (size.divide(ONE_MB_BI).compareTo(BigInteger.ZERO) > 0) {
      displaySize = String.valueOf(size.divide(ONE_MB_BI)) + " MB";
    } else if (size.divide(ONE_KB_BI).compareTo(BigInteger.ZERO) > 0) {
      displaySize = String.valueOf(size.divide(ONE_KB_BI)) + " KB";
    } else {
      displaySize = String.valueOf(size) + " bytes";
    }

    return displaySize;
  }
}

代码示例来源：origin: google/guava

return BigInteger.valueOf(LongMath.binomial(n, k));
     .multiply(BigInteger.valueOf(numeratorAccum))
     .divide(BigInteger.valueOf(denominatorAccum));
 numeratorAccum = p;
 denominatorAccum = q;
 .multiply(BigInteger.valueOf(numeratorAccum))
 .divide(BigInteger.valueOf(denominatorAccum));

代码示例来源：origin: ethereum/ethereumj

public static boolean isIn20PercentRange(BigInteger first, BigInteger second) {
  BigInteger five = BigInteger.valueOf(5);
  BigInteger limit = first.add(first.divide(five));
  return !isMoreThan(second, limit);
}

代码示例来源：origin: ethereum/ethereumj

public long mine(long fullSize, int[] dataset, byte[] blockHeaderTruncHash, long difficulty, long startNonce) {
  long nonce = startNonce;
  BigInteger target = valueOf(2).pow(256).divide(valueOf(difficulty));
  while (!Thread.currentThread().isInterrupted()) {
    nonce++;
    Pair<byte[], byte[]> pair = hashimotoFull(fullSize, dataset, blockHeaderTruncHash, longToBytes(nonce));
    BigInteger h = new BigInteger(1, pair.getRight() /* ?? */);
    if (h.compareTo(target) < 0) break;
  }
  return nonce;
}

代码示例来源：origin: prestodb/presto

BigInteger sqrt1 = sqrt0.add(x.divide(sqrt0)).shiftRight(1);
if (sqrt0.equals(sqrt1)) {
 return sqrt0;
 sqrt1 = sqrt0.add(x.divide(sqrt0)).shiftRight(1);
} while (sqrt1.compareTo(sqrt0) < 0);
return sqrt0;

代码示例来源：origin: prestodb/presto

int approxCmp = approxPow.compareTo(x);
  approxPow = approxPow.divide(BigInteger.TEN);
  approxCmp = approxPow.compareTo(x);
 } while (approxCmp > 0);
} else {
 BigInteger nextPow = BigInteger.TEN.multiply(approxPow);
 int nextCmp = nextPow.compareTo(x);
 while (nextCmp <= 0) {
  approxLog10++;
  approxPow = nextPow;
  approxCmp = nextCmp;
  nextPow = BigInteger.TEN.multiply(approxPow);
  nextCmp = nextPow.compareTo(x);
  BigInteger halfPowerSquared = floorPow.pow(2).multiply(BigInteger.TEN);
  return (x2.compareTo(halfPowerSquared) <= 0) ? floorLog : floorLog + 1;
 default:

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