/// <summary>
/// Solves the matrix equation AX = B, where A is the coefficient matrix (this matrix), B is the solution matrix and X is the unknown matrix.
/// </summary>
/// <param name="input">The solution matrix <c>B</c>.</param>
/// <param name="result">The result matrix <c>X</c></param>
/// <param name="solver">The iterative solver to use.</param>
/// <param name="iterator">The iterator to use to control when to stop iterating.</param>
/// <param name="preconditioner">The preconditioner to use for approximations.</param>
public IterationStatus TrySolveIterative(Matrix <T> input, Matrix <T> result, IIterativeSolver <T> solver, Iterator <T> iterator = null, IPreconditioner <T> preconditioner = null)
{
if (RowCount != input.RowCount || input.RowCount != result.RowCount || input.ColumnCount != result.ColumnCount)
{
throw DimensionsDontMatch <ArgumentException>(this, input, result);
}
if (iterator == null)
{
iterator = new Iterator <T>(Build.IterativeSolverStopCriteria());
}
if (preconditioner == null)
{
preconditioner = new UnitPreconditioner <T>();
}
for (var column = 0; column < input.ColumnCount; column++)
{
var solution = Vector <T> .Build.Dense(RowCount);
solver.Solve(this, input.Column(column), solution, iterator, preconditioner);
foreach (var element in solution.EnumerateNonZeroIndexed())
{
result.At(element.Item1, column, element.Item2);
}
}
return(iterator.Status);
}
