Examples of java.math.BigInteger.shiftRight()

java.math.BigInteger.shiftRight()
Returns a BigInteger whose value is {@code (this >> n)}. Sign extension is performed. The shift distance, {@code n}, may be negative, in which case this method performs a left shift. (Computes floor(this / 2ⁿ).) @param n shift distance, in bits. @return {@code this >> n} @see #shiftLeft

            BigInteger tmpValue = fieldValue;
            byte[] tmp = new byte[byteCount];
            for (int i = byteCount-1; i >= 0; i--) 
            {
                tmp[i] = (byte) ((tmpValue.intValue() & 0x7f) | 0x80);
                tmpValue = tmpValue.shiftRight(7); 
            }
            tmp[byteCount-1] &= 0x7f;
            out.write(tmp);
        }

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        BigInteger[] si = new BigInteger[2];


        if (h == 2)
        {
            si[0] = dividend0.shiftRight(1);
            si[1] = dividend1.shiftRight(1).negate();
        }
        else if (h == 4)
        {
            si[0] = dividend0.shiftRight(2);
            si[1] = dividend1.shiftRight(2).negate();

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            si[1] = dividend1.shiftRight(1).negate();
        }
        else if (h == 4)
        {
            si[0] = dividend0.shiftRight(2);
            si[1] = dividend1.shiftRight(2).negate();
        }
        else
        {
            throw new IllegalArgumentException("h (Cofactor) must be 2 or 4");
        }

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            else
            {
                // mu == -1
                r0 = r1.subtract(r0.shiftRight(1));
            }
            r1 = t.shiftRight(1).negate();
            i++;
        }
        return u;
    }

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            {
                Z = Z.xor(V);
            }


            boolean lsb = V.testBit(0);
            V = V.shiftRight(1);
            if (lsb)
            {
                V = V.xor(R);
            }
        }

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        boolean remainder;
        if (left.compareTo(right) < 0)
        {
            BigInteger sum = left.add(right);
            remainder = sum.testBit(0);
            midpoint = sum.shiftRight(1);
        }
        else
        {
            BigInteger max = TWO.pow(sigbits);
            // wrapping case

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        {
            BigInteger max = TWO.pow(sigbits);
            // wrapping case
            BigInteger distance = max.add(right).subtract(left);
            remainder = distance.testBit(0);
            midpoint = distance.shiftRight(1).add(left).mod(max);
        }
        return new Pair<BigInteger, Boolean>(midpoint, remainder);
    }


    public static int compareUnsigned(byte[] bytes1, byte[] bytes2, int offset1, int offset2, int len1, int len2)

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        boolean remainder;
        if (left.compareTo(right) < 0)
        {
            BigInteger sum = left.add(right);
            remainder = sum.testBit(0);
            midpoint = sum.shiftRight(1);
        }
        else
        {
            BigInteger max = TWO.pow(sigbits);
            // wrapping case

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        {
            BigInteger max = TWO.pow(sigbits);
            // wrapping case
            BigInteger distance = max.add(right).subtract(left);
            remainder = distance.testBit(0);
            midpoint = distance.shiftRight(1).add(left).mod(max);
        }
        return new Pair<BigInteger, Boolean>(midpoint, remainder);
    }


    public static int compareUnsigned(byte[] bytes1, byte[] bytes2, int offset1, int offset2, int len1, int len2)

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        boolean remainder;
        if (left.compareTo(right) < 0)
        {
            BigInteger sum = left.add(right);
            remainder = sum.testBit(0);
            midpoint = sum.shiftRight(1);
        }
        else
        {
            BigInteger max = TWO.pow(sigbits);
            // wrapping case

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