Examples of org.apache.pig.piggybank.evaluation.math.SCALB.exec()

Package org.apache.pig.piggybank.evaluation.math

Class org.apache.pig.piggybank.evaluation.math.SCALB

Examples of org.apache.pig.piggybank.evaluation.math.SCALB.exec()

org.apache.pig.piggybank.evaluation.math.SCALB.exec()
java level API @param input expects a tuple containing two numeric DataAtom value @param output returns a single numeric DataAtom value, which is fistArgument × pow(2,secondArgument) rounded as if performed by a single correctly rounded floating-point multiply to a member of the double value set.

          EvalFunc<DataAtom> SCALB = new SCALB();
          Tuple tup = new Tuple(2);
          tup.setField(0, 1);
          tup.setField(1,2);
          DataAtom output = new DataAtom();
          SCALB.exec(tup, output);
          double expected = Math.scalb(1,2);
          double actual = (new Double(output.strval())).doubleValue();
          assertEquals(actual, expected, delta);
      }

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