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mm_mat_write -- Write a sparse matrix to a file in the MatrixMarket format


\begin{lstlisting} call mm_mat_write(a, mtitle, iret, iunit, filename) \end{lstlisting}

Type:
Asynchronous.
On Entry
a
the sparse matrix to be written.
Type:required.
Specified as: a structured data of type spdatapsb_Tspmat_type.
mtitle
Matrix title.
Type: required
A charachter variable holding a descriptive title for the matrix to be written to file.
filename
The name of the file to be written to.
Type:optional.
Specified as: a character variable containing a valid file name, or -, in which case the default output unit 6 (i.e. standard output in Unix jargon) is used. Default: -.
iunit
The Fortran file unit number.
Type:optional.
Specified as: an integer value. Only meaningful if filename is not -.

On Return
iret
Error code.
Type: required
An integer value; 0 means no error has been detected.