/// <summary>
/// Multiplies this matrix with another matrix and returns the result.
/// </summary>
/// <param name="other">The matrix to multiply with.</param>
/// <exception cref="ArgumentException">If <strong>this.Columns != other.Rows</strong>.</exception>
/// <exception cref="ArgumentNullException">If the other matrix is <see langword="null" />.</exception>
/// <returns>The result of multiplication.</returns>
public override Matrix <double> Multiply(Matrix <double> other)
{
if (other == null)
{
throw new ArgumentNullException("other");
}
if (ColumnCount != other.RowCount)
{
throw DimensionsDontMatch <ArgumentException>(this, other);
}
var result = other.CreateMatrix(RowCount, other.ColumnCount);
Multiply(other, result);
return(result);
}
/// <summary>
/// Multiplies this matrix with transpose of another matrix and returns the result.
/// </summary>
/// <param name="other">The matrix to multiply with.</param>
/// <exception cref="ArgumentException">If <strong>this.Columns != other.Rows</strong>.</exception>
/// <exception cref="ArgumentNullException">If the other matrix is <see langword="null" />.</exception>
/// <returns>The result of multiplication.</returns>
public override Matrix <double> TransposeAndMultiply(Matrix <double> other)
{
var otherDiagonal = other as DiagonalMatrix;
if (otherDiagonal == null)
{
return(base.TransposeAndMultiply(other));
}
if (ColumnCount != otherDiagonal.ColumnCount)
{
throw DimensionsDontMatch <ArgumentException>(this, otherDiagonal);
}
var result = other.CreateMatrix(RowCount, other.RowCount);
TransposeAndMultiply(other, result);
return(result);
}