public class DoubleUlp extends EvalFunc<Double>
Math.ulp(double)
.
Given a single data atom it Returns the size of an ulp
of the argument.
value
- Double
.Double
register math.jar;
A = load 'mydata' using PigStorage() as ( float1 );
B = foreach A generate float1, math.ULP(float1);
Math.ulp(double)
,
EvalFunc.SchemaType
log, pigLogger, reporter, returnType
Constructor and Description |
---|
DoubleUlp() |
Modifier and Type | Method and Description |
---|---|
Double |
exec(Tuple input)
java level API
|
Schema |
outputSchema(Schema input)
Report the schema of the output of this UDF.
|
allowCompileTimeCalculation, finish, getArgToFuncMapping, getCacheFiles, getInputSchema, getLoadCaster, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, getSchemaType, getShipFiles, isAsynchronous, needEndOfAllInputProcessing, progress, setEndOfAllInput, setInputSchema, setPigLogger, setReporter, setUDFContextSignature, warn
public Double exec(Tuple input) throws IOException
exec
in class EvalFunc<Double>
input
- expects a single numeric valueoutput
- returns a single numeric value,
the size of an ulp of the argument.IOException
public Schema outputSchema(Schema input)
EvalFunc
The default implementation interprets the OutputSchema
annotation,
if one is present. Otherwise, it returns null
(no known output schema).
outputSchema
in class EvalFunc<Double>
input
- Schema of the inputCopyright © 2007-2017 The Apache Software Foundation