# Conversion to and from Dense Matrices

The following functions convert between sparse matrices and normal (dense-representation) matrices.

## `Matrix(A): MtrxSprs -> Mtrx`

Given a sparse matrix $A$, return the normal (dense-representation) matrix equal to $A$. This function should only be used if the size of $A$ is reasonably small since otherwise the amount of memory needed to represent the dense-representation matrix may be huge. Printing the result of this operation is a convenient way to display $A$ as a normal (dense) matrix if $A$ is small.

## `SparseMatrix(A): Mtrx -> MtrxSprs`

Given a normal (dense-representation) matrix $A$, return the sparse matrix equal to $A$. Note that if there is a fast algorithm available for the sparse matrix type, there is no need to convert a dense-representation matrix to the sparse matrix type first and then to use that algorithm, since Magma does this automatically.