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Updated docs with fnd_owner adn set_p_adjcncy

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Salvatore Filippone
2019-12-12 17:37:31 +00:00
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<!--Converted with LaTeX2HTML 2018 (Released Feb 1, 2018) -->
<HTML>
<HEAD>
<TITLE>tril -- Return the lower triangle</TITLE>
<META NAME="description" CONTENT="tril -- Return the lower triangle">
<TITLE>clean_zeros -- Eliminate zero coefficients</TITLE>
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<H3><A NAME="SECTION000421500000000000000">
tril -- Return the lower triangle</A>
<H3><A NAME="SECTION000421200000000000000">
clean_zeros -- Eliminate zero coefficients</A>
</H3>
<PRE>
call a%tril(l,info[,&amp;
&amp; diag,imin,imax,jmin,jmax,rscale,cscale,u])
call a%clean_zeros(info)
</PRE>
<P>
Returns the lower triangular part of submatrix
<code>A(imin:imax,jmin:jmax)</code>, optionally rescaling row/col indices to
the range <code>1:imax-imin+1,1:jmax-jmin+1</code> and returing the
complementary upper triangle.
Eliminates zero coefficients in the input matrix. Note that depending
on the internal storage format, there may still be some amount of
zero padding in the output.
<P>
<DL>
<DT><STRONG>Type:</STRONG></DT>
<DD>Asynchronous.
@@ -76,32 +76,13 @@ A variable of type <code>psb_Tspmat_type</code>.
<BR>
Scope: <B>local</B>.
<BR></DD>
<DT><STRONG>diag</STRONG></DT>
<DD>Include diagonals up to this one; <code>diag=1</code> means the
first superdiagonal, <code>diag=-1</code> means the first subdiagonal.
Default 0.
</DD>
<DT><STRONG>imin,imax,jmin,jmax</STRONG></DT>
<DD>Minimum and maximum row and column indices.
<BR>
Type: optional.
</DD>
<DT><STRONG>rscale,cscale</STRONG></DT>
<DD>Whether to rescale row/column indices.
Type: optional.
</DD>
</DL>
<DL>
<DT><STRONG><B>On Return</B></STRONG></DT>
<DD>
</DD>
<DT><STRONG>l</STRONG></DT>
<DD>A copy of the lower triangle of <code>a</code>.
<BR>
A variable of type <code>psb_Tspmat_type</code>.
</DD>
<DT><STRONG>u</STRONG></DT>
<DD>(optional) A copy of the upper triangle of <code>a</code>.
<DT><STRONG>a</STRONG></DT>
<DD>The matrix <code>a</code> without zero coefficients.
<BR>
A variable of type <code>psb_Tspmat_type</code>.
</DD>