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HREF="node110.html">Error handling</A>
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<B> <A NAME="tex2html1617"
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HREF="node1.html">Contents</A></B>
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<!--End of Navigation Panel-->
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<H1><A NAME="SECTION000100000000000000000"></A>
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<A NAME="sec:util"></A>
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<BR>
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Utilities
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</H1>
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<P>
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We have some utitlities available for input and output of
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sparsematrices; the interfaces to these routines are available in the
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module <code>psb_util_mod</code>.
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<P>
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ifstarsubroutinesubroutinehb_readRead a sparse matrix from a file in the
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Harwell-Boeing format
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<P>
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<BR>
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<IMG
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WIDTH="461" HEIGHT="16" ALIGN="BOTTOM" BORDER="0"
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SRC="img149.png"
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ALT="\begin{lstlisting}
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call hb_read(a, iret, iunit, filename, b, mtitle)
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\end{lstlisting}">
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<BR>
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<P>
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<DL>
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<DT><STRONG>Type:</STRONG></DT>
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<DD>Asynchronous.
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</DD>
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<DT><STRONG><B>On Entry </B></STRONG></DT>
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<DD>
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</DD>
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<DT><STRONG>filename</STRONG></DT>
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<DD>The name of the file to be read.
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<BR>
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Type:<B>optional</B>.
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<BR>
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Specified as: a character variable containing a valid file name, or
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<code>-</code>, in which case the default input unit 5 (i.e. standard input
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in Unix jargon) is used. Default: <code>-</code>.
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</DD>
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<DT><STRONG>iunit</STRONG></DT>
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<DD>The Fortran file unit number.
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<BR>
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Type:<B>optional</B>.
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<BR>
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Specified as: an integer value. Only meaningful if filename is not <code>-</code>.
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</DD>
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</DL>
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<P>
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<DL>
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<DT><STRONG><B>On Return</B></STRONG></DT>
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<DD>
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</DD>
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<DT><STRONG>a</STRONG></DT>
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<DD>the sparse matrix read from file.
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<BR>
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Type:<B>required</B>.
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<BR>
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Specified as: a structured data of type spdata<TT>psb_Tspmat_type</TT>.
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</DD>
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<DT><STRONG>b</STRONG></DT>
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<DD>Rigth hand side(s).
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<BR>
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Type: <B>Optional</B>
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<BR>
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An array of type real or complex, rank 2 and having the ALLOCATABLE
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attribute; will be allocated and filled in if the input file contains
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a right hand side, otherwise will be left in the UNALLOCATED state.
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</DD>
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<DT><STRONG>mtitle</STRONG></DT>
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<DD>Matrix title.
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<BR>
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Type: <B>Optional</B>
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<BR>
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A charachter variable of length 72 holding a copy of the
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matrix title as specified by the Harwell-Boeing format and contained
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in the input file.
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</DD>
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<DT><STRONG>iret</STRONG></DT>
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<DD>Error code.
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<BR>
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Type: <B>required</B>
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<BR>
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An integer value; 0 means no error has been detected.
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</DD>
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</DL>
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<P>
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ifstarsubroutinesubroutinehb_writeWrite a sparse matrix to a file
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in the Harwell-Boeing format
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<P>
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<BR>
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<IMG
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WIDTH="538" HEIGHT="16" ALIGN="BOTTOM" BORDER="0"
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SRC="img150.png"
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ALT="\begin{lstlisting}
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call hb_write(a, iret, iunit, filename, key, rhs, mtitle)
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\end{lstlisting}">
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<BR>
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<P>
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<DL>
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<DT><STRONG>Type:</STRONG></DT>
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<DD>Asynchronous.
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</DD>
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<DT><STRONG><B>On Entry </B></STRONG></DT>
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<DD>
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</DD>
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<DT><STRONG>a</STRONG></DT>
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<DD>the sparse matrix to be written.
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<BR>
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Type:<B>required</B>.
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<BR>
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Specified as: a structured data of type spdata<TT>psb_Tspmat_type</TT>.
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</DD>
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<DT><STRONG>b</STRONG></DT>
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<DD>Rigth hand side.
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<BR>
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Type: <B>Optional</B>
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<BR>
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An array of type real or complex, rank 1 and having the ALLOCATABLE
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attribute; will be allocated and filled in if the input file contains
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a right hand side.
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</DD>
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<DT><STRONG>filename</STRONG></DT>
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<DD>The name of the file to be written to.
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<BR>
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Type:<B>optional</B>.
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<BR>
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Specified as: a character variable containing a valid file name, or
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<code>-</code>, in which case the default output unit 6 (i.e. standard output
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in Unix jargon) is used. Default: <code>-</code>.
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</DD>
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<DT><STRONG>iunit</STRONG></DT>
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<DD>The Fortran file unit number.
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<BR>
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Type:<B>optional</B>.
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<BR>
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Specified as: an integer value. Only meaningful if filename is not <code>-</code>.
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</DD>
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<DT><STRONG>key</STRONG></DT>
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<DD>Matrix key.
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<BR>
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Type: <B>Optional</B>
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<BR>
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A charachter variable of length 8 holding the
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matrix key as specified by the Harwell-Boeing format and to be
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written to file.
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</DD>
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<DT><STRONG>mtitle</STRONG></DT>
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<DD>Matrix title.
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<BR>
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Type: <B>Optional</B>
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<BR>
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A charachter variable of length 72 holding the
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matrix title as specified by the Harwell-Boeing format and to be
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written to file.
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</DD>
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</DL>
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<P>
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<DL>
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<DT><STRONG><B>On Return</B></STRONG></DT>
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<DD>
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</DD>
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<DT><STRONG>iret</STRONG></DT>
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<DD>Error code.
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<BR>
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Type: <B>required</B>
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<BR>
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An integer value; 0 means no error has been detected.
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</DD>
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</DL>
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<P>
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ifstarsubroutinesubroutinemm_mat_readRead a sparse matrix from a
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file in the MatrixMarket format
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<P>
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<BR>
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<IMG
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WIDTH="394" HEIGHT="16" ALIGN="BOTTOM" BORDER="0"
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SRC="img151.png"
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ALT="\begin{lstlisting}
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call mm_mat_read(a, iret, iunit, filename)
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\end{lstlisting}">
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<BR>
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<P>
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<DL>
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<DT><STRONG>Type:</STRONG></DT>
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<DD>Asynchronous.
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</DD>
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<DT><STRONG><B>On Entry </B></STRONG></DT>
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<DD>
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</DD>
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<DT><STRONG>filename</STRONG></DT>
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<DD>The name of the file to be read.
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<BR>
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Type:<B>optional</B>.
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<BR>
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|
Specified as: a character variable containing a valid file name, or
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|
<code>-</code>, in which case the default input unit 5 (i.e. standard input
|
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|
in Unix jargon) is used. Default: <code>-</code>.
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|
</DD>
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<DT><STRONG>iunit</STRONG></DT>
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<DD>The Fortran file unit number.
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<BR>
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|
Type:<B>optional</B>.
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<BR>
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|
Specified as: an integer value. Only meaningful if filename is not <code>-</code>.
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</DD>
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</DL>
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<P>
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<DL>
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<DT><STRONG><B>On Return</B></STRONG></DT>
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<DD>
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</DD>
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<DT><STRONG>a</STRONG></DT>
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<DD>the sparse matrix read from file.
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<BR>
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Type:<B>required</B>.
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<BR>
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|
Specified as: a structured data of type spdata<TT>psb_Tspmat_type</TT>.
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</DD>
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<DT><STRONG>iret</STRONG></DT>
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<DD>Error code.
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<BR>
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Type: <B>required</B>
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<BR>
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An integer value; 0 means no error has been detected.
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</DD>
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</DL>
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<P>
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ifstarsubroutinesubroutinemm_vet_readRead a dense vector from a
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file in the MatrixMarket format
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<BR>
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<IMG
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WIDTH="394" HEIGHT="16" ALIGN="BOTTOM" BORDER="0"
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SRC="img152.png"
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ALT="\begin{lstlisting}
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call mm_vet_read(b, iret, iunit, filename)
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\end{lstlisting}">
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<BR>
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<P>
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<DL>
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<DT><STRONG>Type:</STRONG></DT>
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|
<DD>Asynchronous.
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</DD>
|
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<DT><STRONG><B>On Entry </B></STRONG></DT>
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<DD>
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|
</DD>
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<DT><STRONG>filename</STRONG></DT>
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<DD>The name of the file to be read.
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<BR>
|
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|
Type:<B>optional</B>.
|
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|
<BR>
|
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|
Specified as: a character variable containing a valid file name, or
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|
<code>-</code>, in which case the default input unit 5 (i.e. standard input
|
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|
in Unix jargon) is used. Default: <code>-</code>.
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|
</DD>
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<DT><STRONG>iunit</STRONG></DT>
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<DD>The Fortran file unit number.
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<BR>
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Type:<B>optional</B>.
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<BR>
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Specified as: an integer value. Only meaningful if filename is not <code>-</code>.
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</DD>
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</DL>
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<P>
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<DL>
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<DT><STRONG><B>On Return</B></STRONG></DT>
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<DD>
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</DD>
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<DT><STRONG>b</STRONG></DT>
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<DD>Rigth hand side(s).
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<BR>
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Type: <B>required</B>
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<BR>
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An array of type real or complex, rank 2 and having the ALLOCATABLE
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attribute; will be allocated and filled in if the input file contains
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a right hand side, otherwise will be left in the UNALLOCATED state.
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</DD>
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<DT><STRONG>iret</STRONG></DT>
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<DD>Error code.
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<BR>
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Type: <B>required</B>
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<BR>
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An integer value; 0 means no error has been detected.
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</DD>
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</DL>
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<P>
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ifstarsubroutinesubroutinemm_mat_writeWrite a sparse matrix to a
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file in the MatrixMarket format
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<BR>
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<IMG
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WIDTH="480" HEIGHT="16" ALIGN="BOTTOM" BORDER="0"
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SRC="img153.png"
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ALT="\begin{lstlisting}
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call mm_mat_write(a, mtitle, iret, iunit, filename)
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\end{lstlisting}">
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<BR>
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<DL>
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<DT><STRONG>Type:</STRONG></DT>
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<DD>Asynchronous.
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</DD>
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<DT><STRONG><B>On Entry </B></STRONG></DT>
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<DD>
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</DD>
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<DT><STRONG>a</STRONG></DT>
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<DD>the sparse matrix to be written.
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<BR>
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Type:<B>required</B>.
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<BR>
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Specified as: a structured data of type spdata<TT>psb_Tspmat_type</TT>.
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</DD>
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<DT><STRONG>mtitle</STRONG></DT>
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<DD>Matrix title.
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<BR>
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Type: <B>required</B>
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<BR>
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A charachter variable holding a descriptive title for the matrix to be
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written to file.
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</DD>
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<DT><STRONG>filename</STRONG></DT>
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<DD>The name of the file to be written to.
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<BR>
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Type:<B>optional</B>.
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<BR>
|
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|
Specified as: a character variable containing a valid file name, or
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<code>-</code>, in which case the default output unit 6 (i.e. standard output
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|
in Unix jargon) is used. Default: <code>-</code>.
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|
</DD>
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<DT><STRONG>iunit</STRONG></DT>
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|
<DD>The Fortran file unit number.
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|
<BR>
|
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|
|
Type:<B>optional</B>.
|
|
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|
|
<BR>
|
|
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|
|
Specified as: an integer value. Only meaningful if filename is not <code>-</code>.
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|
</DD>
|
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</DL>
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<P>
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<DL>
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|
<DT><STRONG><B>On Return</B></STRONG></DT>
|
|
|
|
|
<DD>
|
|
|
|
|
</DD>
|
|
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|
<DT><STRONG>iret</STRONG></DT>
|
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|
|
<DD>Error code.
|
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|
|
<BR>
|
|
|
|
|
Type: <B>required</B>
|
|
|
|
|
<BR>
|
|
|
|
|
An integer value; 0 means no error has been detected.
|
|
|
|
|
</DD>
|
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</DL>
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<P>
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