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package de.lmu.ifi.dbs.elki.utilities.datastructures.arraylike;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2015
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import de.lmu.ifi.dbs.elki.math.linearalgebra.Matrix;
/**
* Use a matrix as array, by flattening it into a sequence.
*
* @author Erich Schubert
*
* @apiviz.exclude
*/
class FlatMatrixAdapter implements NumberArrayAdapter<Double, Matrix> {
/**
* Constructor.
*
* Use the static instance from {@link ArrayLikeUtil}!
*/
protected FlatMatrixAdapter() {
super();
}
@Override
public int size(Matrix array) {
return array.getColumnDimensionality() * array.getRowDimensionality();
}
@Override
@Deprecated
public Double get(Matrix array, int off) throws IndexOutOfBoundsException {
return Double.valueOf(getDouble(array, off));
}
@Override
public double getDouble(Matrix array, int off) throws IndexOutOfBoundsException {
return array.get(off / array.getColumnDimensionality(), off % array.getColumnDimensionality());
}
@Override
public float getFloat(Matrix array, int off) throws IndexOutOfBoundsException {
return (float) getDouble(array, off);
}
@Override
public int getInteger(Matrix array, int off) throws IndexOutOfBoundsException {
return (int) getDouble(array, off);
}
@Override
public short getShort(Matrix array, int off) throws IndexOutOfBoundsException {
return (short) getDouble(array, off);
}
@Override
public long getLong(Matrix array, int off) throws IndexOutOfBoundsException {
return (long) getDouble(array, off);
}
@Override
public byte getByte(Matrix array, int off) throws IndexOutOfBoundsException {
return (byte) getDouble(array, off);
}
}
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