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

        tup.set(0,   3.15d);   tup.set(1, 1); expected =  "3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.15d);   tup.set(1, 1); expected = "-3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.5d);    tup.set(1, 0); expected =  "4.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.5d);    tup.set(1, 0); expected = "-4.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   2.5d);    tup.set(1, 0); expected =  "2.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -2.5d);    tup.set(1, 0); expected = "-2.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());


        // Returns double given double; rounding mode is round-half-away-from-zero
        tup = TupleFactory.getInstance().newTuple(3);
        tup.set(2, 4); // java.math.RoundingMode.HALF_UP
        tup.set(0,   3.25000001d); tup.set(1, 1); expected =  "3.3";  dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());

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        tup.set(0,  -2.5d);    tup.set(1, 0); expected = "-2.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());


        // Returns double given double; rounding mode is round-half-away-from-zero
        tup = TupleFactory.getInstance().newTuple(3);
        tup.set(2, 4); // java.math.RoundingMode.HALF_UP
        tup.set(0,   3.25000001d); tup.set(1, 1); expected =  "3.3";  dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.25d);   tup.set(1, 1); expected =  "3.3";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.25d);   tup.set(1, 1); expected = "-3.3";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.15d);   tup.set(1, 1); expected =  "3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.15d);   tup.set(1, 1); expected = "-3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.5d);    tup.set(1, 0); expected =  "4.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());

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        // Returns double given double; rounding mode is round-half-away-from-zero
        tup = TupleFactory.getInstance().newTuple(3);
        tup.set(2, 4); // java.math.RoundingMode.HALF_UP
        tup.set(0,   3.25000001d); tup.set(1, 1); expected =  "3.3";  dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.25d);   tup.set(1, 1); expected =  "3.3";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.25d);   tup.set(1, 1); expected = "-3.3";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.15d);   tup.set(1, 1); expected =  "3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.15d);   tup.set(1, 1); expected = "-3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.5d);    tup.set(1, 0); expected =  "4.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.5d);    tup.set(1, 0); expected = "-4.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());

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        // Returns double given double; rounding mode is round-half-away-from-zero
        tup = TupleFactory.getInstance().newTuple(3);
        tup.set(2, 4); // java.math.RoundingMode.HALF_UP
        tup.set(0,   3.25000001d); tup.set(1, 1); expected =  "3.3";  dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.25d);   tup.set(1, 1); expected =  "3.3";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.25d);   tup.set(1, 1); expected = "-3.3";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.15d);   tup.set(1, 1); expected =  "3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.15d);   tup.set(1, 1); expected = "-3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.5d);    tup.set(1, 0); expected =  "4.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.5d);    tup.set(1, 0); expected = "-4.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   2.5d);    tup.set(1, 0); expected =  "3.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());

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        tup = TupleFactory.getInstance().newTuple(3);
        tup.set(2, 4); // java.math.RoundingMode.HALF_UP
        tup.set(0,   3.25000001d); tup.set(1, 1); expected =  "3.3";  dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.25d);   tup.set(1, 1); expected =  "3.3";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.25d);   tup.set(1, 1); expected = "-3.3";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.15d);   tup.set(1, 1); expected =  "3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.15d);   tup.set(1, 1); expected = "-3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.5d);    tup.set(1, 0); expected =  "4.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.5d);    tup.set(1, 0); expected = "-4.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   2.5d);    tup.set(1, 0); expected =  "3.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -2.5d);    tup.set(1, 0); expected = "-3.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());

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        tup.set(2, 4); // java.math.RoundingMode.HALF_UP
        tup.set(0,   3.25000001d); tup.set(1, 1); expected =  "3.3";  dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.25d);   tup.set(1, 1); expected =  "3.3";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.25d);   tup.set(1, 1); expected = "-3.3";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.15d);   tup.set(1, 1); expected =  "3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.15d);   tup.set(1, 1); expected = "-3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.5d);    tup.set(1, 0); expected =  "4.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.5d);    tup.set(1, 0); expected = "-4.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   2.5d);    tup.set(1, 0); expected =  "3.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -2.5d);    tup.set(1, 0); expected = "-3.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
    }

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        tup.set(0,   3.25000001d); tup.set(1, 1); expected =  "3.3";  dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.25d);   tup.set(1, 1); expected =  "3.3";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.25d);   tup.set(1, 1); expected = "-3.3";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.15d);   tup.set(1, 1); expected =  "3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.15d);   tup.set(1, 1); expected = "-3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.5d);    tup.set(1, 0); expected =  "4.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.5d);    tup.set(1, 0); expected = "-4.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   2.5d);    tup.set(1, 0); expected =  "3.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -2.5d);    tup.set(1, 0); expected = "-3.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
    }

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        tup.set(0,   3.25d);   tup.set(1, 1); expected =  "3.3";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.25d);   tup.set(1, 1); expected = "-3.3";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.15d);   tup.set(1, 1); expected =  "3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.15d);   tup.set(1, 1); expected = "-3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.5d);    tup.set(1, 0); expected =  "4.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.5d);    tup.set(1, 0); expected = "-4.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   2.5d);    tup.set(1, 0); expected =  "3.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -2.5d);    tup.set(1, 0); expected = "-3.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
    }


    @Test

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        tup.set(0,  -3.25d);   tup.set(1, 1); expected = "-3.3";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.15d);   tup.set(1, 1); expected =  "3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.15d);   tup.set(1, 1); expected = "-3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.5d);    tup.set(1, 0); expected =  "4.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.5d);    tup.set(1, 0); expected = "-4.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   2.5d);    tup.set(1, 0); expected =  "3.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -2.5d);    tup.set(1, 0); expected = "-3.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
    }


    @Test
    public void testStringFuncs() throws Exception {

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        tup.set(0,   3.15d);   tup.set(1, 1); expected =  "3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.15d);   tup.set(1, 1); expected = "-3.2";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   3.5d);    tup.set(1, 0); expected =  "4.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -3.5d);    tup.set(1, 0); expected = "-4.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,   2.5d);    tup.set(1, 0); expected =  "3.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
        tup.set(0,  -2.5d);    tup.set(1, 0); expected = "-3.0";      dbl_out = rounder.exec(tup); assertEquals(expected, dbl_out.toString());
    }


    @Test
    public void testStringFuncs() throws Exception {
        // Since String functions are trivial we add test on per case basis

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