Package org.apfloat.spi

Interface Factor3NTTStepStrategy

All Known Implementing Classes:

DoubleFactor3NTTStepStrategy, FloatFactor3NTTStepStrategy, IntAparapiFactor3NTTStepStrategy, IntFactor3NTTStepStrategy, LongAparapiFactor3NTTStepStrategy, LongFactor3NTTStepStrategy

public interface Factor3NTTStepStrategy

Steps for the factor-3 NTT.

Since:

1.7.0

Version:

1.7.0

Author:

Mikko Tommila

Method Summary

Modifier and Type	Method	Description
long	getMaxTransformLength()	Get the maximum transform length.
void	transformColumns(DataStorage dataStorage0, DataStorage dataStorage1, DataStorage dataStorage2, long startColumn, long columns, long power2length, long length, boolean isInverse, int modulus)	Transform the columns of a matrix using a 3-point transform.

Method Details

transformColumns

void transformColumns(DataStorage dataStorage0,
 DataStorage dataStorage1,
 DataStorage dataStorage2,
 long startColumn,
 long columns,
 long power2length,
 long length,
 boolean isInverse,
 int modulus)
               throws ApfloatRuntimeException

Transform the columns of a matrix using a 3-point transform.

Parameters:

dataStorage0 - The data of the first column.

dataStorage1 - The data of the second column.

dataStorage2 - The data of the third column.

startColumn - The starting element index in the data storages to transform.

columns - How many columns to transform.

power2length - Length of the column transform.

length - Length of total transform (three times the length of one column).

isInverse - true if an inverse transform is performed, false if a forward transform is performed.

modulus - Index of the modulus.

Throws:

ApfloatRuntimeException

getMaxTransformLength

long getMaxTransformLength()

Get the maximum transform length.

Returns:

The maximum transform length.