com.yahoo.tensor

Class IndexedTensor.SingleDimensionIndexes

java.lang.Object

com.yahoo.tensor.IndexedTensor.Indexes

com.yahoo.tensor.IndexedTensor.SingleDimensionIndexes

Enclosing class:

IndexedTensor

private static final class IndexedTensor.SingleDimensionIndexes
extends IndexedTensor.Indexes

In this case we can keep track of indexes using a step instead of using the more elaborate computation

Field Summary

Fields

Modifier and Type	Field and Description
private int	currentIterationValueIndex Maintain this directly as an optimization for 1-d iteration
private int	currentSourceValueIndex Maintain this directly as an optimization for 1-d iteration
private int	iterateDimension
private int	iterationStep The iteration step in the value index space
private int	size
private int	sourceStep 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	SingleDimensionIndexes(DimensionSizes sourceSizes, DimensionSizes iterateSizes, int iterateDimension, int[] initialIndexes, int size)

Method Summary

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

iterateDimension

private final int iterateDimension

currentSourceValueIndex

private int currentSourceValueIndex

Maintain this directly as an optimization for 1-d iteration

currentIterationValueIndex

private int currentIterationValueIndex

Maintain this directly as an optimization for 1-d iteration

sourceStep

private final int sourceStep

The iteration step in the value index space

iterationStep

private final int iterationStep

The iteration step in the value index space

Constructor Detail

SingleDimensionIndexes

private SingleDimensionIndexes(DimensionSizes sourceSizes,
                               DimensionSizes iterateSizes,
                               int iterateDimension,
                               int[] initialIndexes,
                               int size)

Method Detail

size

public int 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

int toSourceValueIndex()

Overrides:

toSourceValueIndex in class IndexedTensor.Indexes

toIterationValueIndex

int toIterationValueIndex()

Overrides:

toIterationValueIndex in class IndexedTensor.Indexes