Examples of org.apache.pig.builtin.ROUND_TO.exec()

org.apache.pig.builtin.ROUND_TO.exec()
java level API @param input expects a numeric value to round, a number of digits to keep, and an optional rounding mode. @return output returns a single numeric value, the number with only those digits retained

        String           expected;


        // Returns double given double
        tup = TupleFactory.getInstance().newTuple(2);
        tup.set(0,1234.1789d); tup.set(1, 8); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 4); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 2); expected = "1234.18";   dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 1); expected = "1234.2";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 0); expected = "1234.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-1); expected = "1230.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-3); expected = "1000.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());

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        // Returns double given double
        tup = TupleFactory.getInstance().newTuple(2);
        tup.set(0,1234.1789d); tup.set(1, 8); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 4); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 2); expected = "1234.18";   dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 1); expected = "1234.2";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 0); expected = "1234.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-1); expected = "1230.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-3); expected = "1000.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-4); expected = "0.0";       dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());

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        // Returns double given double
        tup = TupleFactory.getInstance().newTuple(2);
        tup.set(0,1234.1789d); tup.set(1, 8); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 4); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 2); expected = "1234.18";   dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 1); expected = "1234.2";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 0); expected = "1234.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-1); expected = "1230.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-3); expected = "1000.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-4); expected = "0.0";       dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-5); expected = "0.0";       dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());

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        tup = TupleFactory.getInstance().newTuple(2);
        tup.set(0,1234.1789d); tup.set(1, 8); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 4); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 2); expected = "1234.18";   dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 1); expected = "1234.2";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 0); expected = "1234.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-1); expected = "1230.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-3); expected = "1000.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-4); expected = "0.0";       dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-5); expected = "0.0";       dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());

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        tup.set(0,1234.1789d); tup.set(1, 8); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 4); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 2); expected = "1234.18";   dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 1); expected = "1234.2";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 0); expected = "1234.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-1); expected = "1230.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-3); expected = "1000.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-4); expected = "0.0";       dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-5); expected = "0.0";       dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());


        // default rounding mode is round-half-to-even

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        Tuple            tup;
        String           expected;


        // Returns double given double
        tup = TupleFactory.getInstance().newTuple(2);
        tup.set(0,1234.1789d); tup.set(1, 8); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 4); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 2); expected = "1234.18";   dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 1); expected = "1234.2";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 0); expected = "1234.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-1); expected = "1230.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());

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        String           expected;


        // Returns double given double
        tup = TupleFactory.getInstance().newTuple(2);
        tup.set(0,1234.1789d); tup.set(1, 8); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 4); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 2); expected = "1234.18";   dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 1); expected = "1234.2";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 0); expected = "1234.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-1); expected = "1230.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-3); expected = "1000.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());

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        // Returns double given double
        tup = TupleFactory.getInstance().newTuple(2);
        tup.set(0,1234.1789d); tup.set(1, 8); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 4); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 2); expected = "1234.18";   dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 1); expected = "1234.2";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 0); expected = "1234.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-1); expected = "1230.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-3); expected = "1000.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-4); expected = "0.0";       dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());

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        // Returns double given double
        tup = TupleFactory.getInstance().newTuple(2);
        tup.set(0,1234.1789d); tup.set(1, 8); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 4); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 2); expected = "1234.18";   dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 1); expected = "1234.2";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 0); expected = "1234.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-1); expected = "1230.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-3); expected = "1000.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-4); expected = "0.0";       dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-5); expected = "0.0";       dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());

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        tup = TupleFactory.getInstance().newTuple(2);
        tup.set(0,1234.1789d); tup.set(1, 8); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 4); expected = "1234.1789"; dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 2); expected = "1234.18";   dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 1); expected = "1234.2";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1, 0); expected = "1234.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-1); expected = "1230.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-3); expected = "1000.0";    dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-4); expected = "0.0";       dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,1234.1789d); tup.set(1,-5); expected = "0.0";       dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());

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