org.apache.hadoop.hive.ql.udf

Class UDFLog2

java.lang.Object

org.apache.hadoop.hive.ql.exec.UDF

org.apache.hadoop.hive.ql.udf.UDFMath

org.apache.hadoop.hive.ql.udf.UDFLog2

public class UDFLog2
extends UDFMath

UDFLog2.

Constructor Summary

Constructors

Constructor and Description
UDFLog2()

Method Summary

Modifier and Type	Method and Description
protected DoubleWritable	doEvaluate(DoubleWritable a) Returns the logarithm of "a" with base 2.

Methods inherited from class org.apache.hadoop.hive.ql.udf.UDFMath

evaluate, evaluate

Methods inherited from class org.apache.hadoop.hive.ql.exec.UDF

getRequiredFiles, getRequiredJars, getResolver, setResolver

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

UDFLog2

public UDFLog2()

Method Detail

doEvaluate

protected DoubleWritable doEvaluate(DoubleWritable a)

Returns the logarithm of "a" with base 2.

Specified by:

doEvaluate in class UDFMath