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Added entrywise inversion and documentation for vec-vec operation

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cirdans-home
2019-11-21 13:56:22 +01:00
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<!--Converted with LaTeX2HTML 2018 (Released Feb 1, 2018) -->
<HTML>
<HEAD>
<TITLE>psb_is_owned -- </TITLE>
<META NAME="description" CONTENT="psb_is_owned -- ">
<TITLE>psb_gelp -- Applies a left permutation to a dense matrix</TITLE>
<META NAME="description" CONTENT="psb_gelp -- Applies a left permutation to a dense matrix">
<META NAME="keywords" CONTENT="userhtml">
<META NAME="resource-type" CONTENT="document">
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@@ -16,45 +16,46 @@
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<!--End of Navigation Panel-->
<H2><A NAME="SECTION000719000000000000000">
psb_is_owned -- </A>
<H2><A NAME="SECTION000716000000000000000">
psb_gelp -- Applies a left permutation to a dense
matrix</A>
</H2>
<P>
<PRE>
call psb_is_owned(x, desc_a)
call psb_gelp(trans, iperm, x, info)
</PRE>
<P>
@@ -65,8 +66,14 @@ call psb_is_owned(x, desc_a)
<DT><STRONG><B>On Entry</B></STRONG></DT>
<DD>
</DD>
<DT><STRONG>x</STRONG></DT>
<DD>Integer index.
<DT><STRONG>trans</STRONG></DT>
<DD>A character that specifies whether to permute <SPAN CLASS="MATH"><IMG
WIDTH="16" HEIGHT="15" ALIGN="BOTTOM" BORDER="0"
SRC="img1.png"
ALT="$A$"></SPAN> or <SPAN CLASS="MATH"><IMG
WIDTH="26" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
SRC="img125.png"
ALT="$A^T$"></SPAN>.
<BR>
Scope: <B>local</B>
<BR>
@@ -74,19 +81,36 @@ Type: <B>required</B>
<BR>
Intent: <B>in</B>.
<BR>
Specified as: a scalar integer.
Specified as: a single character with value 'N' for <SPAN CLASS="MATH"><IMG
WIDTH="16" HEIGHT="15" ALIGN="BOTTOM" BORDER="0"
SRC="img1.png"
ALT="$A$"></SPAN> or 'T' for <SPAN CLASS="MATH"><IMG
WIDTH="26" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
SRC="img125.png"
ALT="$A^T$"></SPAN>.
<BR></DD>
<DT><STRONG>desc_a</STRONG></DT>
<DD>the communication descriptor.
<DT><STRONG>iperm</STRONG></DT>
<DD>An integer array containing permutation information.
<BR>
Scope:<B>local</B>.
Scope: <B>local</B>
<BR>
Type:<B>required</B>.
Type: <B>required</B>
<BR>
Intent: <B>in</B>.
<BR>
Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
</DD>
Specified as: an integer one-dimensional array.
<BR></DD>
<DT><STRONG>x</STRONG></DT>
<DD>The dense matrix to be permuted.
<BR>
Scope: <B>local</B>
<BR>
Type: <B>required</B>
<BR>
Intent: <B>inout</B>.
<BR>
Specified as: a one or two dimensional array.
<BR></DD>
</DL>
<P>
@@ -94,30 +118,19 @@ Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
<DT><STRONG><B>On Return</B></STRONG></DT>
<DD>
</DD>
<DT><STRONG>Function value</STRONG></DT>
<DD>A logical mask which is true if
<SPAN CLASS="MATH"><IMG
WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
SRC="img20.png"
ALT="$x$"></SPAN> is owned by the current process
<DT><STRONG>info</STRONG></DT>
<DD>Error code.
<BR>
Scope: <B>local</B>
<BR>
Type: <B>required</B>
Type: <B>required</B>
<BR>
Intent: <B>out</B>.
<BR></DD>
<BR>
An integer value; 0 means no error has been detected.
</DD>
</DL>
<P>
<BIG CLASS="LARGE"><B>Notes</B></BIG>
<OL>
<LI>This routine returns a <code>.true.</code> value for an index
that is strictly owned by the current process, excluding the halo
indices
</LI>
</OL>
<P>
<BR><HR>