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mm_mat_read -- Read a sparse matrix from a file in the MatrixMarket format

call mm_mat_read(a, iret, iunit, filename)

Type:
Asynchronous.
On Entry
filename
The name of the file to be read.
Type:optional.
Specified as: a character variable containing a valid file name, or -, in which case the default input unit 5 (i.e. standard input 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
a
the sparse matrix read from file.
Type:required.
Specified as: a structured data of type spdatapsb_Tspmat_type.
iret
Error code.
Type: required
An integer value; 0 means no error has been detected.