org.apache.pig.piggybank.evaluation.math

Class POW

java.lang.Object

org.apache.pig.EvalFunc<java.lang.Double>

org.apache.pig.piggybank.evaluation.math.Base

org.apache.pig.piggybank.evaluation.math.DoubleDoubleBase

org.apache.pig.piggybank.evaluation.math.POW

public class POW
extends DoubleDoubleBase

math.POW implements a binding to the Java function Math.pow(double,double). Given a tuple with two data atom it Returns the the value of the first argument raised to the power of the second argument.

Parameters:

value - Tuple containing two Double.

Return Value:

Double

Return Schema:

POW_inputSchema

Example:

register math.jar;
A = load 'mydata' using PigStorage() as ( float1 );
B = foreach A generate float1, math.POW(float1);

Author:

ajay garg

See Also:

Math.pow(double,double),

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.pig.EvalFunc

EvalFunc.SchemaType

Field Summary

Fields inherited from class org.apache.pig.EvalFunc

log, pigLogger, reporter, returnType

Constructor Summary

Constructors

Constructor and Description
POW()

Method Summary

Methods inherited from class org.apache.pig.piggybank.evaluation.math.DoubleDoubleBase

exec, getArgToFuncMapping

Methods inherited from class org.apache.pig.piggybank.evaluation.math.Base

outputSchema

Methods inherited from class org.apache.pig.EvalFunc

allowCompileTimeCalculation, finish, getCacheFiles, getInputSchema, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, getSchemaType, getShipFiles, isAsynchronous, progress, setInputSchema, setPigLogger, setReporter, setUDFContextSignature, warn

Methods inherited from class java.lang.Object

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

Constructor Detail

POW

public POW()