java.math.BigInteger.add()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.add()方法的一些代码示例，展示了BigInteger.add()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.add()方法的具体详情如下：
包路径：java.math.BigInteger
类名称：BigInteger
方法名：add

BigInteger.add介绍

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

代码示例

代码示例来源：origin: google/guava

@Override
BigInteger offset(BigInteger origin, long distance) {
 checkNonnegative(distance, "distance");
 return origin.add(BigInteger.valueOf(distance));
}

代码示例来源：origin: stackoverflow.com

BigInteger reallyBig = new BigInteger("1234567890123456890");
BigInteger notSoBig = new BigInteger("2743561234");
reallyBig = reallyBig.add(notSoBig);

代码示例来源：origin: Sable/soot

/** Factorial */
public static BigInteger fact(BigInteger n_) {
 BigInteger result = BigInteger.ONE;
 for (BigInteger i = BigInteger.ONE; i.compareTo(n_) <= 0; i = i.add(BigInteger.ONE)) {
  result = result.multiply(i);
 }
 return result;
}

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: google/guava

checkNonNegative("x", x);
if (fitsInLong(x)) {
 return BigInteger.valueOf(LongMath.sqrt(x.longValue(), mode));
  return sqrtFloorIsExact ? sqrtFloor : sqrtFloor.add(BigInteger.ONE);
 case HALF_DOWN:
 case HALF_UP:
 case HALF_EVEN:
  BigInteger halfSquare = sqrtFloor.pow(2).add(sqrtFloor);
  return (halfSquare.compareTo(x) >= 0) ? sqrtFloor : sqrtFloor.add(BigInteger.ONE);
 default:
  throw new AssertionError();

代码示例来源：origin: apache/hive

public static BigInteger fastBigIntegerValueUnscaled(
  int fastSignum, long fast0, long fast1, long fast2) {
 if (fastSignum == 0) {
  return BigInteger.ZERO;
 }
 BigInteger result;
 if (fast2 == 0) {
  if (fast1 == 0) {
   result =
     BigInteger.valueOf(fast0);
  } else {
   result =
     BigInteger.valueOf(fast0).add(
       BigInteger.valueOf(fast1).multiply(BIG_INTEGER_LONGWORD_MULTIPLIER));
  }
 } else {
  result =
    BigInteger.valueOf(fast0).add(
      BigInteger.valueOf(fast1).multiply(BIG_INTEGER_LONGWORD_MULTIPLIER)).add(
        BigInteger.valueOf(fast2).multiply(BIG_INTEGER_LONGWORD_MULTIPLIER_2X));
 }
 return (fastSignum == 1 ? result : result.negate());
}

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: 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: robovm/robovm

digestBI = new BigInteger(1, msgDigest.digest());
  k = new BigInteger(1, randomBytes);
  if (k.compareTo(q) != -1) {
    continue;
  r = g.modPow(k, p).mod(q);
  if (r.signum() == 0) {
    continue;
  s = k.modInverse(q).multiply(digestBI.add(x.multiply(r)).mod(q))
      .mod(q);

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: prestodb/presto

@Test
public void testGetRingFraction()
{
  assertEquals(tokenRing.getTokenCountInRange("0", "1"), ONE);
  assertEquals(tokenRing.getTokenCountInRange("0", "200"), 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"), BigInteger.valueOf(2).pow(127).add(ONE));
  assertEquals(tokenRing.getTokenCountInRange("1", "0"), BigInteger.valueOf(2).pow(127));
}

代码示例来源：origin: google/guava

@GwtIncompatible // TODO
public void testSqrtHalfUp() {
 for (BigInteger x : POSITIVE_BIGINTEGER_CANDIDATES) {
  BigInteger result = BigIntegerMath.sqrt(x, HALF_UP);
  BigInteger plusHalfSquared = result.pow(2).add(result).shiftLeft(2).add(ONE);
  BigInteger x4 = x.shiftLeft(2);
  // sqrt(x) < result + 0.5, so 4 * x < (result + 0.5)^2 * 4
  // (result + 0.5)^2 * 4 = (result^2 + result)*4 + 1
  assertTrue(x4.compareTo(plusHalfSquared) < 0);
  BigInteger minusHalfSquared = result.pow(2).subtract(result).shiftLeft(2).add(ONE);
  // sqrt(x) > result - 0.5, so 4 * x > (result - 0.5)^2 * 4
  // (result - 0.5)^2 * 4 = (result^2 - result)*4 + 1
  assertTrue(result.equals(ZERO) || x4.compareTo(minusHalfSquared) >= 0);
 }
}

代码示例来源：origin: kiegroup/optaplanner

@Override
public BigInteger next() {
  if (upcoming.compareTo(to) >= 0) {
    throw new NoSuchElementException();
  }
  BigInteger next = upcoming;
  upcoming = upcoming.add(incrementUnit);
  return next;
}

代码示例来源：origin: SeanDragon/protools

/**
 * 判断生成的公钥是否合法
 *
 * @param publicKey
 * @return
 */
private boolean checkPublicKey(ECPoint publicKey) {
  if (!publicKey.isInfinity()) {
    BigInteger x = publicKey.getXCoord().toBigInteger();
    BigInteger y = publicKey.getYCoord().toBigInteger();
    if (between(x, new BigInteger("0"), p) && between(y, new BigInteger("0"), p)) {
      BigInteger xResult = x.pow(3).add(a.multiply(x)).add(b).mod(p);
      BigInteger yResult = y.pow(2).mod(p);
      return yResult.equals(xResult) && publicKey.multiply(n).isInfinity();
    }
  }
  return false;
}

代码示例来源：origin: i2p/i2p.i2p

private static ECPoint doublePoint(ECPoint r, EllipticCurve curve) {
  if (r.equals(ECPoint.POINT_INFINITY)) 
    return r;
  BigInteger slope = (r.getAffineX().pow(2)).multiply(THREE);
  slope = slope.add(curve.getA());
  BigInteger prime = ((ECFieldFp) curve.getField()).getP();
  // use NBI modInverse();
  BigInteger tmp = r.getAffineY().multiply(TWO);
  tmp = new NativeBigInteger(tmp);
  slope = slope.multiply(tmp.modInverse(prime));
  BigInteger xOut = slope.pow(2).subtract(r.getAffineX().multiply(TWO)).mod(prime);
  BigInteger yOut = (r.getAffineY().negate()).add(slope.multiply(r.getAffineX().subtract(xOut))).mod(prime);
  ECPoint out = new ECPoint(xOut, yOut);
  return out;
}

代码示例来源：origin: ethereum/ethereumj

void testAddMod(String v1, String v2, String v3) {
  DataWord dv1 = DataWord.of(Hex.decode(v1));
  DataWord dv2 = DataWord.of(Hex.decode(v2));
  DataWord dv3 = DataWord.of(Hex.decode(v3));
  BigInteger bv1 = new BigInteger(v1, 16);
  BigInteger bv2 = new BigInteger(v2, 16);
  BigInteger bv3 = new BigInteger(v3, 16);
  DataWord actual = dv1.addmod(dv2, dv3);
  BigInteger br = bv1.add(bv2).mod(bv3);
  assertEquals(actual.value(), br);
}

代码示例来源：origin: checkstyle/checkstyle

/** Leaves try. */
private void leaveMultiplyingConditional() {
  currentRangeValue = currentRangeValue.add(BigInteger.ONE)
      .multiply(popValue().getRangeValue().add(BigInteger.ONE));
}

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: 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);
}

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