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

x33g5p2x  于2022-01-16 转载在 其他  
字(9.3k)|赞(0)|评价(0)|浏览(290)

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

BigInteger.subtract介绍

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

代码示例

代码示例来源：origin: prestodb/presto

@Override
  public BigInteger getTokenCountInRange(String startToken, String endToken)
  {
    long start = Long.parseLong(startToken);
    long end = Long.parseLong(endToken);

    if (start == end) {
      if (start == MIN_TOKEN) {
        return TOTAL_TOKEN_COUNT;
      }
      else {
        return ZERO;
      }
    }

    BigInteger result = BigInteger.valueOf(end).subtract(BigInteger.valueOf(start));
    if (end <= start) {
      result = result.add(TOTAL_TOKEN_COUNT);
    }
    return result;
  }
}

代码示例来源：origin: stackoverflow.com

public static BigInteger factorial(BigInteger n) {
  BigInteger result = BigInteger.ONE;

  while (!n.equals(BigInteger.ZERO)) {
    result = result.multiply(n);
    n = n.subtract(BigInteger.ONE);
  }

  return result;
}

代码示例来源：origin: stackoverflow.com

for (BigInteger bi = BigInteger.valueOf(5);
     bi.compareTo(BigInteger.ZERO) > 0;
     bi = bi.subtract(BigInteger.ONE)) {
   System.out.println(bi);
 }
 // prints "5", "4", "3", "2", "1"

代码示例来源：origin: prestodb/presto

@Override
public BigInteger getTokenCountInRange(String startToken, String endToken)
{
  BigInteger start = new BigInteger(startToken);
  checkTokenBounds(start);
  BigInteger end = new BigInteger(endToken);
  checkTokenBounds(end);
  if (start.equals(end)) {
    if (start.equals(MIN_TOKEN)) {
      return TOTAL_TOKEN_COUNT;
    }
    else {
      return ZERO;
    }
  }
  BigInteger result = end.subtract(start);
  if (end.compareTo(start) <= 0) {
    result = result.add(TOTAL_TOKEN_COUNT);
  }
  return result;
}

代码示例来源：origin: web3j/web3j

BigInteger i = BigInteger.valueOf((long) recId / 2);
BigInteger x = sig.r.add(i.multiply(n));
if (x.compareTo(prime) >= 0) {
BigInteger e = new BigInteger(1, message);
BigInteger eInv = BigInteger.ZERO.subtract(e).mod(n);
BigInteger rInv = sig.r.modInverse(n);
BigInteger srInv = rInv.multiply(sig.s).mod(n);
BigInteger eInvrInv = rInv.multiply(eInv).mod(n);
ECPoint q = ECAlgorithms.sumOfTwoMultiplies(CURVE.getG(), eInvrInv, R, srInv);
return new BigInteger(1, Arrays.copyOfRange(qBytes, 1, qBytes.length));

代码示例来源：origin: aws-amplify/aws-sdk-android

messageDigest.reset();
messageDigest.update(A.toByteArray());
final BigInteger u = new BigInteger(1, messageDigest.digest(B.toByteArray()));
if (u.equals(BigInteger.ZERO)) {
  throw new CognitoInternalErrorException("Hash of A and B cannot be zero");
final BigInteger x = new BigInteger(1, messageDigest.digest(userIdHash));
final BigInteger s = (B.subtract(KK.multiply(GG.modPow(x, N)))
    .modPow(a.add(u.multiply(x)), N)).mod(N);

代码示例来源：origin: pholser/junit-quickcheck

@Override protected void primeSourceOfRandomness() {
  when(randomForParameterGenerator.nextBigInteger(min.add(TEN).subtract(min).bitLength()))
    .thenReturn(new BigInteger("6"));
  when(randomForParameterGenerator.nextBigInteger(min.add(TEN.pow(2)).subtract(min).bitLength()))
    .thenReturn(new BigInteger("35"));
  when(distro.sampleWithMean(1, randomForParameterGenerator)).thenReturn(0);
  when(distro.sampleWithMean(2, randomForParameterGenerator)).thenReturn(1);
}

代码示例来源：origin: prestodb/presto

@Test
public void testGetTokenCountInRange()
{
  assertEquals(tokenRing.getTokenCountInRange("0", "1"), ONE);
  assertEquals(tokenRing.getTokenCountInRange("-1", "1"), new BigInteger("2"));
  assertEquals(tokenRing.getTokenCountInRange("-100", "100"), new BigInteger("200"));
  assertEquals(tokenRing.getTokenCountInRange("0", "10"), new BigInteger("10"));
  assertEquals(tokenRing.getTokenCountInRange("1", "11"), new BigInteger("10"));
  assertEquals(tokenRing.getTokenCountInRange("0", "0"), ZERO);
  assertEquals(tokenRing.getTokenCountInRange("1", "1"), ZERO);
  assertEquals(tokenRing.getTokenCountInRange(Long.toString(Long.MIN_VALUE), Long.toString(Long.MIN_VALUE)), BigInteger.valueOf(2).pow(64).subtract(ONE));
  assertEquals(tokenRing.getTokenCountInRange("1", "0"), BigInteger.valueOf(2).pow(64).subtract(BigInteger.valueOf(2)));
}

代码示例来源：origin: stackoverflow.com

int nlen = n.bitLength();
BigInteger nm1 = n.subtract(BigInteger.ONE);
BigInteger r, s;
do {
  s = new BigInteger(nlen + 100, rnd);
  r = s.mod(n);
} while (s.subtract(r).add(nm1).bitLength() >= nlen + 100);
// result is in 'r'

代码示例来源：origin: oracle/helidon

@Override
public BigInteger apply(Config config) throws ConfigMappingException, MissingValueException {
  return (new BigInteger(config.asString().get())).subtract(BigInteger.ONE);
}

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: 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: i2p/i2p.i2p

protected byte[] engineSign() throws SignatureException {
  BigInteger elgp = key.getParams().getP();
  BigInteger pm1 = elgp.subtract(BigInteger.ONE);
  BigInteger elgg = key.getParams().getG();
  BigInteger x = ((ElGamalPrivateKey) key).getX();
  boolean ok;
  do {
    k = new BigInteger(2048, RandomSource.getInstance());
    ok = k.compareTo(pm1) == -1;
    ok = ok && k.compareTo(BigInteger.ONE) == 1;
    ok = ok && k.gcd(pm1).equals(BigInteger.ONE);
  } while (!ok);
  BigInteger kinv = k.modInverse(pm1);
  BigInteger h = new NativeBigInteger(1, data);
  BigInteger s = (kinv.multiply(h.subtract(x.multiply(r)))).mod(pm1);

代码示例来源：origin: hibernate/hibernate-orm

public IntegralDataTypeHolder subtract(long subtrahend) {
  checkInitialized();
  value = value.subtract( BigInteger.valueOf( subtrahend ) );
  return this;
}

代码示例来源：origin: plantuml/plantuml

public BigDecimal eval(List<? extends Number> parameters) {
    assertNotNull(parameters.get(0));
    /*
     * From The Java Programmers Guide To numerical Computing (Ronald Mak, 2003)
     */
    BigDecimal x = (BigDecimal) parameters.get(0);
    if (x.compareTo(BigDecimal.ZERO) == 0) {
      return new BigDecimal(0);
    }
    if (x.signum() < 0) {
      throw new ExpressionException("Argument to SQRT() function must not be negative");
    }
    BigInteger n = x.movePointRight(mc.getPrecision() << 1).toBigInteger();
    int bits = (n.bitLength() + 1) >> 1;
    BigInteger ix = n.shiftRight(bits);
    BigInteger ixPrev;
    BigInteger test;
    do {
      ixPrev = ix;
      ix = ix.add(n.divide(ix)).shiftRight(1);
      // Give other threads a chance to work;
      Thread.yield();
      test = ix.subtract(ixPrev).abs();
    } while (test.compareTo(BigInteger.ZERO) != 0 && test.compareTo(BigInteger.ONE) != 0);
    return new BigDecimal(ix, mc.getPrecision());
  }
});

代码示例来源：origin: apache/zeppelin

BigInteger base = new BigInteger("" + DICTIONARY.length);
int exponent = 1;
BigInteger remaining = new BigInteger(value.toString());
while (true) {
 BigInteger b = remaining.mod(a); // 119 % 16 = 7 | 112 % 256 = 112
 BigInteger c = base.pow(exponent - 1);
 BigInteger d = b.divide(c);
 remaining = remaining.subtract(b); // 119 - 7 = 112 | 112 - 112 = 0

代码示例来源：origin: prestodb/presto

private static BigInteger bigDecimalToBigintFloorSaturatedCast(BigDecimal bigDecimal, int resultPrecision, int resultScale)
{
  BigDecimal rescaledValue = bigDecimal.setScale(resultScale, FLOOR);
  BigInteger unscaledValue = rescaledValue.unscaledValue();
  BigInteger maxUnscaledValue = bigIntegerTenToNth(resultPrecision).subtract(ONE);
  if (unscaledValue.compareTo(maxUnscaledValue) > 0) {
    return maxUnscaledValue;
  }
  BigInteger minUnscaledValue = maxUnscaledValue.negate();
  if (unscaledValue.compareTo(minUnscaledValue) < 0) {
    return minUnscaledValue;
  }
  return unscaledValue;
}

代码示例来源：origin: prestodb/presto

@Override
public BigInteger visitArithmeticBinary(ArithmeticBinaryContext ctx)
{
  BigInteger left = visit(ctx.left);
  BigInteger right = visit(ctx.right);
  switch (ctx.operator.getType()) {
    case PLUS:
      return left.add(right);
    case MINUS:
      return left.subtract(right);
    case ASTERISK:
      return left.multiply(right);
    case SLASH:
      return left.divide(right);
    default:
      throw new IllegalStateException("Unsupported binary operator " + ctx.operator.getText());
  }
}

代码示例来源：origin: i2p/i2p.i2p

/**
 *  @param sigBytes ASN.1 R,S
 */
@Override
protected boolean engineVerify(byte[] sigBytes) throws SignatureException {
  BigInteger elgp = key.getParams().getP();
  BigInteger pm1 = elgp.subtract(BigInteger.ONE);
  BigInteger elgg = key.getParams().getG();
  BigInteger y = ((ElGamalPublicKey) key).getY();
  if (!(y instanceof NativeBigInteger))
    y = new NativeBigInteger(y);
  byte[] data = digest.digest();
  try {
    BigInteger[] rs = SigUtil.aSN1ToBigInteger(sigBytes, 256);
    BigInteger r = rs[0];
    BigInteger s = rs[1];
    if (r.signum() != 1 || s.signum() != 1 ||
      r.compareTo(elgp) != -1 || s.compareTo(pm1) != -1)
      return false;
    NativeBigInteger h = new NativeBigInteger(1, data);
    BigInteger modvalr = r.modPow(s, elgp);
    BigInteger modvaly = y.modPow(r, elgp);
    BigInteger modmulval = modvalr.multiply(modvaly).mod(elgp);
    BigInteger v = elgg.modPow(h, elgp);
    boolean ok = v.compareTo(modmulval) == 0;
    return ok;
  } catch (RuntimeException e) {
    throw new SignatureException("verify", e);
  }
}

代码示例来源：origin: checkstyle/checkstyle

/** Leaves else, default or case group tokens. */
private void leaveBranch() {
  final Values valuePair = popValue();
  final BigInteger basicRangeValue = valuePair.getRangeValue();
  final BigInteger expressionValue = valuePair.getExpressionValue();
  if (branchVisited && currentRangeValue.equals(BigInteger.ZERO)) {
    currentRangeValue = BigInteger.ONE;
  }
  currentRangeValue = currentRangeValue.subtract(BigInteger.ONE)
      .add(basicRangeValue)
      .add(expressionValue);
}

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