/usr/include/trilinos/Stokhos_MeanBasedDivisionExpansionStrategy.hpp is in libtrilinos-stokhos-dev 12.10.1-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 | // $Id$
// $Source$
// @HEADER
// ***********************************************************************
//
// Stokhos Package
// Copyright (2009) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// 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
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact Eric T. Phipps (etphipp@sandia.gov).
//
// ***********************************************************************
// @HEADER
#ifndef STOKHOS_MEAN_BASED_DIVISION_EXPANSION_STRATEGY_HPP
#define STOKHOS_MEAN_BASED_DIVISION_EXPANSION_STRATEGY_HPP
#include "Stokhos_DivisionExpansionStrategy.hpp"
#include "Teuchos_TimeMonitor.hpp"
namespace Stokhos {
//! Strategy interface for computing PCE of a/b using only b[0]
/*!
* Such a strategy is only useful when the division occurs in a preconditioner
*/
template <typename ordinal_type, typename value_type, typename node_type>
class MeanBasedDivisionExpansionStrategy :
public DivisionExpansionStrategy<ordinal_type,value_type,node_type> {
public:
//! Constructor
MeanBasedDivisionExpansionStrategy() {}
//! Destructor
virtual ~MeanBasedDivisionExpansionStrategy() {}
// Division operation: c = \alpha*(a/b) + beta*c
virtual void divide(
Stokhos::OrthogPolyApprox<ordinal_type, value_type, node_type>& c,
const value_type& alpha,
const Stokhos::OrthogPolyApprox<ordinal_type, value_type, node_type>& a,
const Stokhos::OrthogPolyApprox<ordinal_type, value_type, node_type>& b,
const value_type& beta);
private:
// Prohibit copying
MeanBasedDivisionExpansionStrategy(
const MeanBasedDivisionExpansionStrategy&);
// Prohibit Assignment
MeanBasedDivisionExpansionStrategy& operator=(
const MeanBasedDivisionExpansionStrategy& b);
}; // class DivisionExpansionStrategy
} // namespace Stokhos
template <typename ordinal_type, typename value_type, typename node_type>
void
Stokhos::MeanBasedDivisionExpansionStrategy<ordinal_type,value_type,node_type>::
divide(Stokhos::OrthogPolyApprox<ordinal_type, value_type, node_type>& c,
const value_type& alpha,
const Stokhos::OrthogPolyApprox<ordinal_type, value_type, node_type>& a,
const Stokhos::OrthogPolyApprox<ordinal_type, value_type, node_type>& b,
const value_type& beta)
{
#ifdef STOKHOS_TEUCHOS_TIME_MONITOR
TEUCHOS_FUNC_TIME_MONITOR("Stokhos::MeanBasedDivisionStrategy::divide()");
#endif
ordinal_type pc = a.size();
if (c.size() != pc)
c.resize(pc);
const value_type* ca = a.coeff();
const value_type* cb = b.coeff();
value_type* cc = c.coeff();
for (ordinal_type i=0; i<pc; i++)
cc[i] = alpha*ca[i]/cb[0] + beta*cc[i];
}
#endif // STOKHOS_MEAN_BASED_DIVISION_EXPANSION_STRATEGY_HPP
|