/// <summary>
/// Adds the <see cref="DiagonalMatrix{T}"/> and the <see cref="DiagonalMatrix{T}"/>.
/// </summary>
/// <typeparam name="T">Type of matrices elements.</typeparam>
/// <param name="firstMatrix">The first matrix to add.</param>
/// <param name="secondMatrix">The second matrix to add.</param>
/// <returns>The matrix of added matrices elements.</returns>
public static DiagonalMatrix <T> Add <T>(this DiagonalMatrix <T> firstMatrix, DiagonalMatrix <T> secondMatrix)
{
CheckMatrix <T>(firstMatrix, secondMatrix);
T[,] resultArray = new T[firstMatrix.Order, secondMatrix.Order];
for (int i = 0; i < firstMatrix.Order; i++)
{
resultArray[i, i] = (dynamic)firstMatrix[i, i] + (dynamic)secondMatrix[i, i];
}
return(new DiagonalMatrix <T>(resultArray));
}
/// <summary>
/// Adds the <see cref="SquareMatrix{T}"/> and the <see cref="DiagonalMatrix{T}"/>.
/// </summary>
/// <typeparam name="T">Type of matrices elements.</typeparam>
/// <param name="firstMatrix">The first matrix to add.</param>
/// <param name="secondMatrix">The second matrix to add.</param>
/// <returns>The matrix of added matrices elements.</returns>
public static SquareMatrix <T> Add <T>(this SquareMatrix <T> firstMatrix, DiagonalMatrix <T> secondMatrix)
{
return(new SquareMatrix <T>(AddMatrix <T>(firstMatrix, secondMatrix)));
}
/// <summary>
/// Adds the <see cref="DiagonalMatrix{T}"/> and the <see cref="SquareMatrix{T}"/>.
/// </summary>
/// <typeparam name="T">Type of matrices elements.</typeparam>
/// <param name="firstMatrix">The first matrix to add.</param>
/// <param name="secondMatrix">The second matrix to add.</param>
/// <returns>The matrix of added matrices elements.</returns>
public static SquareMatrix <T> Add <T>(this DiagonalMatrix <T> firstMatrix, SquareMatrix <T> secondMatrix) => Add(secondMatrix, firstMatrix);