Sums matrices and assign.

Perform addition of matrices and assign the result to matrix.

Perform standard linear algebra addition. Matrices must have the same CoefficientRing but can have different StorageFormat. The addition is optimized for each combination of StorageFormat.

Parameters

matrix	The first matrix.
other	The second matrix.

Returns

A reference to the modified matrix matrix containing the result.

Functions
Sparse_matrix &	operator+= (const Sparse_matrix &other)
	Matrices sum and assign: COLUMN += COLUMN or ROW += ROW.

Friends
template<typename _CT >
Sparse_matrix< _CT, COLUMN > &	operator+= (Sparse_matrix< _CT, COLUMN > &matrix, const Sparse_matrix< _CT, ROW > &other)
	Matrices sum and assign: COLUMN += ROW.
template<typename _CT >
Sparse_matrix< _CT, ROW > &	operator+= (Sparse_matrix< _CT, ROW > &matrix, const Sparse_matrix< _CT, COLUMN > &other)
	Matrices sum and assign: ROW += COLUMN.