/// <summary>
/// Compute the sum of <c>this</c> and <c>m</c>.
/// </summary>
/// <param name="m">Matrix to be added.</param>
/// <returns><c>this + m</c>.</returns>
/// <exception cref="MatrixDimensionMismatchException"> if <c>m</c> is not the same
/// size as <c>this</c>.</exception>
public DiagonalMatrix add(DiagonalMatrix m)
{
// Safety check.
MatrixUtils.checkAdditionCompatible(this, m);
int dim = getRowDimension();
double[] outData = new double[dim];
for (int i = 0; i < dim; i++)
{
outData[i] = data[i] + m.data[i];
}
return(new DiagonalMatrix(outData, false));
}
/// <summary>
/// Subtract <c>m</c> from this matrix.
/// </summary>
/// <param name="m">Matrix to be subtracted.</param>
/// <returns><c>this</c> - <c>m</c>.</returns>
/// <exception cref="MatrixDimensionMismatchException"> if <c>m</c> is not the same
/// size as <c>this</c>.</exception>
public OpenMapRealMatrix subtract(OpenMapRealMatrix m)
{
MatrixUtils.checkAdditionCompatible(this, m);
OpenMapRealMatrix outp = new OpenMapRealMatrix(this);
for (OpenIntToDoubleHashMap.Iterator iterator = m.entries.iterator(); iterator.MoveNext();)
{
int row = iterator.Current.Key / columns;
int col = iterator.Current.Key - row * columns;
outp.setEntry(row, col, getEntry(row, col) - iterator.Current.Value);
}
return(outp);
}
/// <inheritdoc/>
public RealMatrix add(RealMatrix m)
{
MatrixUtils.checkAdditionCompatible(this, m);
int rowCount = getRowDimension();
int columnCount = getColumnDimension();
RealMatrix outp = createMatrix(rowCount, columnCount);
for (int row = 0; row < rowCount; ++row)
{
for (int col = 0; col < columnCount; ++col)
{
outp.setEntry(row, col, getEntry(row, col) + m.getEntry(row, col));
}
}
return(outp);
}
/// <summary>
/// Compute the sum of <c>this</c> and <c>m</c>.
/// </summary>
/// <param name="m">Matrix to be added.</param>
/// <returns><c>this + m</c>.</returns>
/// <exception cref="MatrixDimensionMismatchException"> if <c>m</c> is not the same
/// size as <c>this</c>.</exception>
public Array2DRowRealMatrix add(Array2DRowRealMatrix m)
{
// Safety check.
MatrixUtils.checkAdditionCompatible(this, m);
int rowCount = getRowDimension();
int columnCount = getColumnDimension();
double[][] outData = new double[rowCount][];
for (int row = 0; row < rowCount; row++)
{
double[] dataRow = data[row];
double[] mRow = m.data[row];
double[] outDataRow = outData[row];
for (int col = 0; col < columnCount; col++)
{
outDataRow[col] = dataRow[col] + mRow[col];
}
}
return(new Array2DRowRealMatrix(outData, false));
}
