com.yahoo.tensor

Class IndexedTensor.EqualSizeSingleDimensionIndexes

java.lang.Object

com.yahoo.tensor.IndexedTensor.Indexes

com.yahoo.tensor.IndexedTensor.EqualSizeSingleDimensionIndexes

Enclosing class:

IndexedTensor

private static final class IndexedTensor.EqualSizeSingleDimensionIndexes
extends IndexedTensor.Indexes

In this case we only need to keep track of one index

Field Summary

Fields

Modifier and Type	Field and Description
private long	currentValueIndex Maintain this directly as an optimization for 1-d iteration
private int	iterateDimension
private long	size
private long	step The iteration step in the value index space

Fields inherited from class com.yahoo.tensor.IndexedTensor.Indexes

indexes

Constructor Summary

Constructors

Modifier	Constructor and Description
private	EqualSizeSingleDimensionIndexes(DimensionSizes sizes, int iterateDimension, long[] initialIndexes, long size)

Method Summary

Modifier and Type	Method and Description
void	next() Advances this to the next cell in the standard indexed tensor cell order.
long	size() Returns the number of values this will iterate over - i.e the product if the iterating dimension sizes
(package private) long	toIterationValueIndex()
(package private) long	toSourceValueIndex()

Methods inherited from class com.yahoo.tensor.IndexedTensor.Indexes

dimensionSizes, indexesCopy, indexesForReading, of, toList, toString

Methods inherited from class java.lang.Object

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

Field Detail

size

private final long size

iterateDimension

private final int iterateDimension

currentValueIndex

private long currentValueIndex

Maintain this directly as an optimization for 1-d iteration

step

private final long step

The iteration step in the value index space

Constructor Detail

EqualSizeSingleDimensionIndexes

private EqualSizeSingleDimensionIndexes(DimensionSizes sizes,
                                        int iterateDimension,
                                        long[] initialIndexes,
                                        long size)

Method Detail

size

public long size()

Returns the number of values this will iterate over - i.e the product if the iterating dimension sizes

Specified by:

size in class IndexedTensor.Indexes

next

public void next()

Advances this to the next cell in the standard indexed tensor cell order. The first call to this will put it at the first position.

Specified by:

next in class IndexedTensor.Indexes

Throws:

RuntimeException - if this is called more times than its size

toSourceValueIndex

long toSourceValueIndex()

Overrides:

toSourceValueIndex in class IndexedTensor.Indexes

toIterationValueIndex

long toIterationValueIndex()

Overrides:

toIterationValueIndex in class IndexedTensor.Indexes