Adds a value to an element in the matrix.
int
specifying the row index of the element. int
specifying the column index of the element. double
specifying the value to be added to the iRow
-th and jColumn
-th element. A double
containing the updated value of the iRow
-th and jColumn
-th element, which equals its old value plus x.
SparseMatrix Class | Imsl.Math Namespace