/usr/include/trilinos/Ifpack2_ConfigDefs.hpp is in libtrilinos-ifpack2-dev 12.10.1-3.
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// ***********************************************************************
//
// Ifpack2: Tempated Object-Oriented Algebraic Preconditioner Package
// Copyright (2009) Sandia Corporation
//
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// 2. Redistributions in binary form must reproduce the above copyright
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// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
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*/
#ifndef _IFPACK2_CONFIGDEFS_HPP_
#define _IFPACK2_CONFIGDEFS_HPP_
#include <Ifpack2_config.h>
#include <Teuchos_ScalarTraits.hpp>
#include <Tpetra_ConfigDefs.hpp>
//The sgn function isn't well defined for complex.
//Is it correct to operate on the real part of x as is done below?
template<class Scalar>
typename Teuchos::ScalarTraits<Scalar>::magnitudeType
IFPACK2_SGN(const Scalar& x)
{
typedef Teuchos::ScalarTraits<Scalar> STS;
typedef typename STS::magnitudeType magnitudeType;
static const magnitudeType one = STS::magnitude(STS::one());
return STS::real(x) > 0.0 ? magnitudeType(-one) : one;
}
/// \namespace Ifpack2
/// \brief Preconditioners and smoothers for Tpetra sparse matrices.
namespace Ifpack2 {
typedef Tpetra::global_size_t global_size_t;
/// \namespace Details
/// \brief Ifpack2 implementation details
///
/// This namespace contains implementation details of Ifpack2.
/// It is <i>not</i> meant for users. Users should not rely on
/// anything in this namespace.
namespace Details {
/// \brief Type of relaxation to use.
/// \warning This is an implementation detail of Ifpack2. Users
/// should not depend on this enum or its integer values. The
/// enum may disappear or change name, or the values may change
/// names or values or disappear, at any time.
enum RelaxationType {
JACOBI, //!< Jacobi
GS, //!< Gauss-Seidel
SGS, //!< Symmetric Gauss-Seidel
MTGS, //!< Multicore Gauss-Seidel
MTSGS //!< Multicore Symmetric Gauss-Seidel
};
} // namespace Details
/*!
@namespace Experimental
@brief Ifpack2 features that are experimental. Use at your own risk.
*/
namespace Experimental {
}
/// \namespace DeprecatedAndMayDisappearAtAnyTime
/// \brief Ifpack2 features that have been DEPRECATED and may
/// DISAPPEAR AT ANY TIME. USE AT YOUR OWN RISK.
namespace DeprecatedAndMayDisappearAtAnyTime {}
} // namespace Ifpack2
#endif /*_IFPACK2_CONFIGDEFS_HPP_*/
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