Package java.math

Examples of java.math.BigInteger.shiftLeft()

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        BigInteger big = BigInteger.ZERO;
        for (int i = 0; i < str.length(); i++)
        {
            int charpos = 16 * (sigchars - (i + 1));
            BigInteger charbig = BigInteger.valueOf(str.charAt(i) & 0xFFFF);
            big = big.or(charbig.shiftLeft(charpos));
        }
        return big;
    }

    /**
 
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        BigInteger big = BigInteger.ZERO;
        for (int i = 0; i < str.length(); i++)
        {
            int charpos = 16 * (sigchars - (i + 1));
            BigInteger charbig = BigInteger.valueOf(str.charAt(i) & 0xFFFF);
            big = big.or(charbig.shiftLeft(charpos));
        }
        return big;
    }

    /**
 
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        BigInteger big = BigInteger.ZERO;
        for (int i = 0; i < str.length(); i++)
        {
            int charpos = 16 * (sigchars - (i + 1));
            BigInteger charbig = BigInteger.valueOf(str.charAt(i) & 0xFFFF);
            big = big.or(charbig.shiftLeft(charpos));
        }
        return big;
    }

    /**
 
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        BigInteger big = BigInteger.ZERO;
        for (int i = 0; i < str.length(); i++)
        {
            int charpos = 16 * (sigchars - (i + 1));
            BigInteger charbig = BigInteger.valueOf(str.charAt(i) & 0xFFFF);
            big = big.or(charbig.shiftLeft(charpos));
        }
        return big;
    }

    /**
 
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      operator = exprAst.getChild(i-1).getTokenValue();
      rhs = exprAst.getChild(i);

      if (operator.equals("<<")) {
        //todo: limit to UINT64_MAX?
        result = result.shiftLeft(evalToInt(rhs).intValue()).and(UINT64_MAX);
      } else if (operator.equals(">>")) {
        result = result.shiftRight(evalToInt(rhs).intValue());
      } else {
        throw new EvaluationException("Unknown shift operator '" + operator + "'");
      }
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        BigInteger big = BigInteger.ZERO;
        for (int i = 0; i < str.length(); i++)
        {
            int charpos = 16 * (sigchars - (i + 1));
            BigInteger charbig = BigInteger.valueOf(str.charAt(i) & 0xFFFF);
            big = big.or(charbig.shiftLeft(charpos));
        }
        return big;
    }

    /**
 
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                if (k.testBit(j))
                {
                    Qh = Ql.multiply(Q).mod(p);
                    Uh = Uh.multiply(Vh).mod(p);
                    Vl = Vh.multiply(Vl).subtract(P.multiply(Ql)).mod(p);
                    Vh = Vh.multiply(Vh).subtract(Qh.shiftLeft(1)).mod(p);
                }
                else
                {
                    Qh = Ql;
                    Uh = Uh.multiply(Vl).subtract(Ql).mod(p);
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        BigInteger big = BigInteger.ZERO;
        for (int i = 0; i < str.length(); i++)
        {
            int charpos = 16 * (sigchars - (i + 1));
            BigInteger charbig = BigInteger.valueOf(str.charAt(i) & 0xFFFF);
            big = big.or(charbig.shiftLeft(charpos));
        }
        return big;
    }

    /**
 
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      {
         BigInteger bi = BigInteger.valueOf(0);
         byte[] address = java.net.InetAddress.getLocalHost().getAddress();
         for (int i = 0; i < 4; i++)
         {
            bi = bi.shiftLeft(8);
            bi = bi.add(BigInteger.valueOf(address[i]));
         }
         bi = bi.shiftLeft(32);
         int code = System.identityHashCode(new Object());
         bi = bi.add(BigInteger.valueOf(code));
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         for (int i = 0; i < 4; i++)
         {
            bi = bi.shiftLeft(8);
            bi = bi.add(BigInteger.valueOf(address[i]));
         }
         bi = bi.shiftLeft(32);
         int code = System.identityHashCode(new Object());
         bi = bi.add(BigInteger.valueOf(code));
         byte[] bytes = bi.toByteArray();
         StringBuffer buffer = new StringBuffer();
         char[] chars = "0123456789ABCDEF".toCharArray();
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