/usr/include/trilinos/Tpetra_RowGraph_def.hpp is in libtrilinos-tpetra-dev 12.10.1-3.
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// ***********************************************************************
//
// Tpetra: Templated Linear Algebra Services Package
// Copyright (2008) Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
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//
// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
//
// ************************************************************************
// @HEADER
#ifndef TPETRA_ROWGRAPH_DEF_HPP
#define TPETRA_ROWGRAPH_DEF_HPP
#include <Tpetra_RowGraph_decl.hpp>
#include <Tpetra_Distributor.hpp> // avoid error C2027: use of undefined type 'Tpetra::Distributor' at (void) distor below
namespace Tpetra {
template<class LocalOrdinal, class GlobalOrdinal, class Node>
void
RowGraph<LocalOrdinal,GlobalOrdinal,Node>::
pack (const Teuchos::ArrayView<const LocalOrdinal>& exportLIDs,
Teuchos::Array<GlobalOrdinal>& exports,
const Teuchos::ArrayView<size_t>& numPacketsPerLID,
size_t& constantNumPackets,
Distributor& distor) const
{
using Teuchos::Array;
typedef LocalOrdinal LO;
typedef GlobalOrdinal GO;
typedef Map<LO, GO, Node> map_type;
const char tfecfFuncName[] = "packAndPrepare";
(void) distor; // forestall "unused argument" compiler warning
TEUCHOS_TEST_FOR_EXCEPTION_CLASS_FUNC(
exportLIDs.size() != numPacketsPerLID.size(), std::runtime_error,
": exportLIDs and numPacketsPerLID must have the same size.");
const map_type& srcMap = * (this->getRowMap ());
constantNumPackets = 0;
// Set numPacketsPerLID[i] to the number of entries owned by the
// calling process in (local) row exportLIDs[i] of the graph, that
// the caller wants us to send out. Compute the total number of
// packets (that is, entries) owned by this process in all the
// rows that the caller wants us to send out.
size_t totalNumPackets = 0;
Array<GO> row;
for (LO i = 0; i < exportLIDs.size (); ++i) {
const GO GID = srcMap.getGlobalElement (exportLIDs[i]);
size_t row_length = this->getNumEntriesInGlobalRow (GID);
numPacketsPerLID[i] = row_length;
totalNumPackets += row_length;
}
exports.resize (totalNumPackets);
// Loop again over the rows to export, and pack rows of indices
// into the output buffer.
size_t exportsOffset = 0;
for (LO i = 0; i < exportLIDs.size (); ++i) {
const GO GID = srcMap.getGlobalElement (exportLIDs[i]);
size_t row_length = this->getNumEntriesInGlobalRow (GID);
row.resize (row_length);
size_t check_row_length = 0;
this->getGlobalRowCopy (GID, row (), check_row_length);
typename Array<GO>::const_iterator row_iter = row.begin();
typename Array<GO>::const_iterator row_end = row.end();
size_t j = 0;
for (; row_iter != row_end; ++row_iter, ++j) {
exports[exportsOffset+j] = *row_iter;
}
exportsOffset += row.size ();
}
}
} // namespace Tpetra
//
// Explicit instantiation macro
//
// Must be expanded from within the Tpetra namespace!
//
#define TPETRA_ROWGRAPH_INSTANT(LO,GO,NODE) \
\
template class RowGraph< LO , GO , NODE >; \
#endif // TPETRA_ROWGRAPH_DEF_HPP
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