You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
243 lines
8.5 KiB
HTML
243 lines
8.5 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
|
|
|
<!--Converted with LaTeX2HTML 2017.2 (Released Jan 23, 2017) -->
|
|
<HTML>
|
|
<HEAD>
|
|
<TITLE>Data Structures and Classes</TITLE>
|
|
<META NAME="description" CONTENT="Data Structures and Classes">
|
|
<META NAME="keywords" CONTENT="userhtml">
|
|
<META NAME="resource-type" CONTENT="document">
|
|
<META NAME="distribution" CONTENT="global">
|
|
|
|
<META NAME="Generator" CONTENT="LaTeX2HTML v2017.2">
|
|
<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">
|
|
|
|
<LINK REL="STYLESHEET" HREF="userhtml.css">
|
|
|
|
<LINK REL="next" HREF="node52.html">
|
|
<LINK REL="previous" HREF="node3.html">
|
|
<LINK REL="up" HREF="userhtml.html">
|
|
<LINK REL="next" HREF="node10.html">
|
|
</HEAD>
|
|
|
|
<BODY >
|
|
|
|
<DIV CLASS="navigation"><!--Navigation Panel-->
|
|
<A NAME="tex2html299"
|
|
HREF="node10.html">
|
|
<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A>
|
|
<A NAME="tex2html295"
|
|
HREF="userhtml.html">
|
|
<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A>
|
|
<A NAME="tex2html289"
|
|
HREF="node8.html">
|
|
<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A>
|
|
<A NAME="tex2html297"
|
|
HREF="node1.html">
|
|
<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A>
|
|
<BR>
|
|
<B> Next:</B> <A NAME="tex2html300"
|
|
HREF="node10.html">Descriptor data structure</A>
|
|
<B> Up:</B> <A NAME="tex2html296"
|
|
HREF="userhtml.html">userhtml</A>
|
|
<B> Previous:</B> <A NAME="tex2html290"
|
|
HREF="node8.html">Programming model</A>
|
|
<B> <A NAME="tex2html298"
|
|
HREF="node1.html">Contents</A></B>
|
|
<BR>
|
|
<BR></DIV>
|
|
<!--End of Navigation Panel-->
|
|
|
|
<H1><A NAME="SECTION00040000000000000000"></A>
|
|
<A NAME="sec:datastruct"></A>
|
|
<BR>
|
|
Data Structures and Classes
|
|
</H1>
|
|
|
|
<P>
|
|
In this chapter we illustrate the data structures used for definition of
|
|
routines interfaces. They include data structures for sparse matrices,
|
|
communication descriptors and preconditioners.
|
|
|
|
<P>
|
|
All the data types and the basic subroutine interfaces related to
|
|
descriptors and sparse matrices are defined in
|
|
the module <code>psb_base_mod</code>; this will have to be included by every
|
|
user subroutine that makes use of the library. The preconditioners are
|
|
defined in the module <code>psb_prec_mod</code>
|
|
|
|
<P>
|
|
Integer, real and complex data types are parametrized with a kind type
|
|
defined in the library as follows:
|
|
<DL>
|
|
<DT><STRONG>psb_spk_</STRONG></DT>
|
|
<DD>Kind parameter for short precision real and complex
|
|
data; corresponds to a <code>REAL</code> declaration and is
|
|
normally 4 bytes;
|
|
</DD>
|
|
<DT><STRONG>psb_dpk_</STRONG></DT>
|
|
<DD>Kind parameter for long precision real and complex
|
|
data; corresponds to a <code>DOUBLE PRECISION</code> declaration and is
|
|
normally 8 bytes;
|
|
</DD>
|
|
<DT><STRONG>psb_ipk_</STRONG></DT>
|
|
<DD>Kind parameter for integer data;
|
|
with default build options this is a 4 bytes integer, but there is
|
|
(highly) experimental support for 8-bytes integers;
|
|
</DD>
|
|
<DT><STRONG>psb_mpik_</STRONG></DT>
|
|
<DD>Kind parameter for 4-bytes integer data, as is
|
|
always used by MPI;
|
|
</DD>
|
|
<DT><STRONG>psb_long_int_k_</STRONG></DT>
|
|
<DD>Kind parameter for long (8 bytes) integers,
|
|
which are always used by the <code>sizeof</code> methods.
|
|
</DD>
|
|
</DL>
|
|
Together with the classes attributes we also discuss their
|
|
methods. Most methods detailed here only act on the local variable,
|
|
i.e. their action is purely local and asynchronous unless otherwise
|
|
stated.
|
|
The list of methods here is not completely exhaustive; many methods,
|
|
especially those that alter the contents of the various objects, are
|
|
usually not needed by the end-user, and therefore are described in the
|
|
developer's documentation.
|
|
|
|
<P>
|
|
<BR><HR>
|
|
<!--Table of Child-Links-->
|
|
<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
|
|
|
|
<UL CLASS="ChildLinks">
|
|
<LI><A NAME="tex2html301"
|
|
HREF="node10.html">Descriptor data structure</A>
|
|
<UL>
|
|
<LI><A NAME="tex2html302"
|
|
HREF="node11.html">Descriptor Methods</A>
|
|
<LI><A NAME="tex2html303"
|
|
HREF="node12.html">get_local_rows -- Get number of local rows</A>
|
|
<LI><A NAME="tex2html304"
|
|
HREF="node13.html">get_local_cols -- Get number of local cols</A>
|
|
<LI><A NAME="tex2html305"
|
|
HREF="node14.html">get_global_rows -- Get number of global rows</A>
|
|
<LI><A NAME="tex2html306"
|
|
HREF="node15.html">get_global_cols -- Get number of global cols</A>
|
|
<LI><A NAME="tex2html307"
|
|
HREF="node16.html">get_global_indices -- Get vector of global indices</A>
|
|
<LI><A NAME="tex2html308"
|
|
HREF="node17.html">get_context -- Get communication context</A>
|
|
<LI><A NAME="tex2html309"
|
|
HREF="node18.html">Clone -- clone current object</A>
|
|
<LI><A NAME="tex2html310"
|
|
HREF="node19.html">CNV -- convert internal storage format</A>
|
|
<LI><A NAME="tex2html311"
|
|
HREF="node20.html">psb_cd_get_large_threshold -- Get threshold for
|
|
index mapping switch</A>
|
|
<LI><A NAME="tex2html312"
|
|
HREF="node21.html">psb_cd_set_large_threshold -- Set threshold for
|
|
index mapping switch</A>
|
|
<LI><A NAME="tex2html313"
|
|
HREF="node22.html">Named Constants</A>
|
|
</UL>
|
|
<BR>
|
|
<LI><A NAME="tex2html314"
|
|
HREF="node23.html">Sparse Matrix class</A>
|
|
<UL>
|
|
<LI><A NAME="tex2html315"
|
|
HREF="node24.html">Sparse Matrix Methods</A>
|
|
<LI><A NAME="tex2html316"
|
|
HREF="node25.html">get_nrows -- Get number of rows in a sparse matrix</A>
|
|
<LI><A NAME="tex2html317"
|
|
HREF="node26.html">get_ncols -- Get number of columns in a sparse
|
|
matrix</A>
|
|
<LI><A NAME="tex2html318"
|
|
HREF="node27.html">get_nnzeros -- Get number of nonzero elements
|
|
in a sparse matrix</A>
|
|
<LI><A NAME="tex2html319"
|
|
HREF="node28.html">get_size -- Get maximum number of nonzero elements
|
|
in a sparse matrix</A>
|
|
<LI><A NAME="tex2html320"
|
|
HREF="node29.html">sizeof -- Get memory occupation in bytes
|
|
of a sparse matrix</A>
|
|
<LI><A NAME="tex2html321"
|
|
HREF="node30.html">get_fmt -- Short description of the dynamic type</A>
|
|
<LI><A NAME="tex2html322"
|
|
HREF="node31.html">is_bld, is_upd, is_asb -- Status check</A>
|
|
<LI><A NAME="tex2html323"
|
|
HREF="node32.html">is_lower, is_upper, is_triangle, is_unit --
|
|
Format check</A>
|
|
<LI><A NAME="tex2html324"
|
|
HREF="node33.html">cscnv -- Convert to a different storage format</A>
|
|
<LI><A NAME="tex2html325"
|
|
HREF="node34.html">csclip -- Reduce to a submatrix</A>
|
|
<LI><A NAME="tex2html326"
|
|
HREF="node35.html">clean_zeros -- Eliminate zero coefficients</A>
|
|
<LI><A NAME="tex2html327"
|
|
HREF="node36.html">get_diag -- Get main diagonal</A>
|
|
<LI><A NAME="tex2html328"
|
|
HREF="node37.html">clip_diag -- Cut out main diagonal</A>
|
|
<LI><A NAME="tex2html329"
|
|
HREF="node38.html">tril -- Return the lower triangle</A>
|
|
<LI><A NAME="tex2html330"
|
|
HREF="node39.html">triu -- Return the upper triangle</A>
|
|
<LI><A NAME="tex2html331"
|
|
HREF="node40.html">psb_set_mat_default -- Set default storage format</A>
|
|
<LI><A NAME="tex2html332"
|
|
HREF="node41.html">clone -- Clone current object</A>
|
|
<LI><A NAME="tex2html333"
|
|
HREF="node42.html">Named Constants</A>
|
|
</UL>
|
|
<BR>
|
|
<LI><A NAME="tex2html334"
|
|
HREF="node43.html">Dense Vector Data Structure</A>
|
|
<UL>
|
|
<LI><A NAME="tex2html335"
|
|
HREF="node44.html">Vector Methods</A>
|
|
<LI><A NAME="tex2html336"
|
|
HREF="node45.html">get_nrows -- Get number of rows in a dense vector</A>
|
|
<LI><A NAME="tex2html337"
|
|
HREF="node46.html">sizeof -- Get memory occupation in bytes
|
|
of a dense vector</A>
|
|
<LI><A NAME="tex2html338"
|
|
HREF="node47.html">set -- Set contents of the vector</A>
|
|
<LI><A NAME="tex2html339"
|
|
HREF="node48.html">get_vect -- Get a copy of the vector contents</A>
|
|
<LI><A NAME="tex2html340"
|
|
HREF="node49.html">clone -- Clone current object</A>
|
|
</UL>
|
|
<BR>
|
|
<LI><A NAME="tex2html341"
|
|
HREF="node50.html">Preconditioner data structure</A>
|
|
<LI><A NAME="tex2html342"
|
|
HREF="node51.html">Heap data structure</A>
|
|
</UL>
|
|
<!--End of Table of Child-Links-->
|
|
|
|
<DIV CLASS="navigation"><HR>
|
|
<!--Navigation Panel-->
|
|
<A NAME="tex2html299"
|
|
HREF="node10.html">
|
|
<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A>
|
|
<A NAME="tex2html295"
|
|
HREF="userhtml.html">
|
|
<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A>
|
|
<A NAME="tex2html289"
|
|
HREF="node8.html">
|
|
<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A>
|
|
<A NAME="tex2html297"
|
|
HREF="node1.html">
|
|
<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A>
|
|
<BR>
|
|
<B> Next:</B> <A NAME="tex2html300"
|
|
HREF="node10.html">Descriptor data structure</A>
|
|
<B> Up:</B> <A NAME="tex2html296"
|
|
HREF="userhtml.html">userhtml</A>
|
|
<B> Previous:</B> <A NAME="tex2html290"
|
|
HREF="node8.html">Programming model</A>
|
|
<B> <A NAME="tex2html298"
|
|
HREF="node1.html">Contents</A></B> </DIV>
|
|
<!--End of Navigation Panel-->
|
|
|
|
</BODY>
|
|
</HTML>
|