9.5 mm_mat_write — Write a sparse matrix to a file in the MatrixMarket format

Type:

Asynchronous.

On Entry

a

the sparse matrix to be written.
Type:required.
Specified as: a structured data of type psb_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.