/usr/include/trilinos/AbstractLinAlgPack_MatrixSymInitDiag.hpp is in libtrilinos-dev 10.4.0.dfsg-1ubuntu2.
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// ***********************************************************************
//
// Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
// Copyright (2003) 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.
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA
// Questions? Contact Roscoe A. Bartlett (rabartl@sandia.gov)
//
// ***********************************************************************
// @HEADER
#ifndef MATRIX_SYM_INIT_DIAGONAL_H
#define MATRIX_SYM_INIT_DIAGONAL_H
#include "AbstractLinAlgPack_Types.hpp"
namespace AbstractLinAlgPack {
/** \brief Mix-in Interface for setting a matrix to a diagonal {abstract}.
*/
class MatrixSymInitDiag {
public:
/** \brief . */
virtual ~MatrixSymInitDiag() {}
/// Initialize a <tt>n x n</tt> identity matrix scaled by \c alpha (where <tt>n = diag.dim()</tt>).
virtual void init_identity( const VectorSpace& space_diag, value_type alpha = 1.0 ) = 0;
/// Initialize an <tt>n x n</tt> diagonal matrix (where <tt>n = diag.dim()</tt>).
virtual void init_diagonal( const Vector& diag ) = 0;
}; // end class MatrixSymInitDiag
} // end namespace AbstractLinAlgPack
#endif // MATRIX_SYM_INIT_DIAGONAL_H
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