Examples with FuncLnLongToDouble org.apache.hadoop.hive.ql.exec.vector.expressions.gen.FuncLnLongToDouble used on opensource projects

Example 1 with FuncLnLongToDouble

use of org.apache.hadoop.hive.ql.exec.vector.expressions.gen.FuncLnLongToDouble in project hive by apache.

the class TestVectorMathFunctions method testVectorLn.

@Test
public void testVectorLn() {
    // test double->double version
    VectorizedRowBatch b = getVectorizedRowBatchDoubleInDoubleOut();
    DoubleColumnVector resultV = (DoubleColumnVector) b.cols[1];
    b.cols[0].noNulls = true;
    VectorExpression expr = new FuncLnDoubleToDouble(0, 1);
    expr.evaluate(b);
    Assert.assertEquals(Math.log(0.5), resultV.vector[4]);
    // test long->double version
    b = getVectorizedRowBatchLongInDoubleOut();
    resultV = (DoubleColumnVector) b.cols[1];
    b.cols[0].noNulls = true;
    expr = new FuncLnLongToDouble(0, 1);
    expr.evaluate(b);
    Assert.assertEquals(Math.log(2), resultV.vector[4]);
}