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Added entrywise inversion and documentation for vec-vec operation

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2019-11-21 13:56:22 +01:00
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<!--Converted with LaTeX2HTML 2018 (Released Feb 1, 2018) -->
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<TITLE>psb_glob_to_loc -- Global to local indices convertion</TITLE>
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<H2><A NAME="SECTION000717000000000000000">
psb_glob_to_loc -- Global to local indices
convertion</A>
<H2><A NAME="SECTION000714000000000000000">
psb_geasb -- Assembly a dense matrix</A>
</H2>
<P>
<PRE>
call psb_glob_to_loc(x, y, desc_a, info, iact,owned)
call psb_glob_to_loc(x, desc_a, info, iact,owned)
call psb_geasb(x, desc_a, info, mold)
</PRE>
<P>
<DL>
<DT><STRONG>Type:</STRONG></DT>
<DD>Asynchronous.
<DD>Synchronous.
</DD>
<DT><STRONG><B>On Entry</B></STRONG></DT>
<DD>
</DD>
<DT><STRONG>x</STRONG></DT>
<DD>An integer vector of indices to be converted.
<DT><STRONG>desc_a</STRONG></DT>
<DD>The communication descriptor.
<BR>
Scope: <B>local</B>
<BR>
Type: <B>required</B>
<BR>
Intent: <B>in, inout</B>.
Intent: <B>in</B>.
<BR>
Specified as: a rank one integer array.
Specified as: a variable of type descdata<TT>psb_desc_type</TT>.
<BR></DD>
<DT><STRONG>desc_a</STRONG></DT>
<DD>the communication descriptor.
<DT><STRONG>mold</STRONG></DT>
<DD>The desired dynamic type for the internal vector storage.
<BR>
Scope:<B>local</B>.
Scope: <B>local</B>.
<BR>
Type:<B>required</B>.
Type: <B>optional</B>.
<BR>
Intent: <B>in</B>.
<BR>
Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
</DD>
<DT><STRONG>iact</STRONG></DT>
<DD>specifies action to be taken in case of range errors.
Scope: <B>global</B>
<BR>
Type: <B>optional</B>
<BR>
Intent: <B>in</B>.
<BR>
Specified as: a character variable <code>I</code>gnore, <code>W</code>arning or
<code>A</code>bort, default <code>I</code>gnore.
</DD>
<DT><STRONG>owned</STRONG></DT>
<DD>Specfies valid range of input
Scope: <B>global</B>
<BR>
Type: <B>optional</B>
<BR>
Intent: <B>in</B>.
<BR>
If true, then only indices strictly owned by the current process are
considered valid, if false then halo indices are also
accepted. Default: false.
Specified as: an object of a class derived from vbasedata<TT>psb_T_base_vect_type</TT>; this is
only allowed when <SPAN CLASS="MATH"><IMG
WIDTH="13" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img20.png"
ALT="$x$"></SPAN> is of type vdata<TT>psb_T_vect_type</TT>.
</DD>
</DL>
@@ -120,43 +99,17 @@ accepted. Default: false.
<DD>
</DD>
<DT><STRONG>x</STRONG></DT>
<DD>If <SPAN CLASS="MATH"><IMG
WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img21.png"
ALT="$y$"></SPAN> is not present,
then <SPAN CLASS="MATH"><IMG
WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
SRC="img20.png"
ALT="$x$"></SPAN> is overwritten with the translated integer indices.
Scope: <B>global</B>
<DD>The dense matrix to be assembled.
<BR>
Scope: <B>local</B>
<BR>
Type: <B>required</B>
<BR>
Intent: <B>inout</B>.
<BR>
Specified as: a rank one integer array.
</DD>
<DT><STRONG>y</STRONG></DT>
<DD>If <SPAN CLASS="MATH"><IMG
WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img21.png"
ALT="$y$"></SPAN> is present,
then <SPAN CLASS="MATH"><IMG
WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img21.png"
ALT="$y$"></SPAN> is overwritten with the translated integer indices, and <SPAN CLASS="MATH"><IMG
WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
SRC="img20.png"
ALT="$x$"></SPAN>
is left unchanged.
Scope: <B>global</B>
<BR>
Type: <B>optional</B>
<BR>
Intent: <B>out</B>.
<BR>
Specified as: a rank one integer array.
</DD>
Specified as: a rank one or two array with the ALLOCATABLE or an
object of type vdata<TT>psb_T_vect_type</TT>, of type real, complex or integer.
<BR></DD>
<DT><STRONG>info</STRONG></DT>
<DD>Error code.
<BR>
@@ -169,45 +122,7 @@ Intent: <B>out</B>.
An integer value; 0 means no error has been detected.
</DD>
</DL>
<P>
<BIG CLASS="LARGE"><B>Notes</B></BIG>
<OL>
<LI>If an input index is out of range, then the corresponding output
index is set to a negative number;
</LI>
<LI>The default <code>I</code>gnore means that the negative output is the
only action taken on an out-of-range input.
</LI>
</OL>
<P>
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