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109 lines
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HREF="node25.html">Computational routines</A>
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HREF="node19.html">psb_cd_get_context Get communication context</A>
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HREF="node23.html">psb_sp_get_ncols Get</A>
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<H3><A NAME="SECTION00045500000000000000">
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psb_sp_get_nnzeros -- Get number of nonzero elements
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in a sparse matrix</A>
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</H3>
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<P>
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<PRE>
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nr = psb_sp_get_nnzeros(a)
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</PRE>
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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
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<BR>
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Scope: <B>local</B>
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<BR>
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Type: <B>required</B>
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<BR>
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Intent: <B>in</B>.
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<BR>
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Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
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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>Function value</STRONG></DT>
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<DD>The number of nonzero elements stored in sparse matrix <code>a</code>.
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</DD>
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</DL>
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<P>
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<B>Notes</B>
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<OL>
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<LI>The function value is specific to the storage format of matrix
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<code>a</code>; some storage formats employ padding, thus the returned
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value for the same matrix may be different for different storage choices.
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