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// ************************************************************************
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// Kokkos: Node API and Parallel Node Kernels
// Copyright (2008) Sandia Corporation
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#ifndef __TSQR_TestUtils_hpp
#define __TSQR_TestUtils_hpp
/// \file Tsqr_TestUtils.hpp
/// \brief Utilities for testing various TSQR components.
/// \author Mark Hoemmen
#include "TpetraTSQR_config.h"
namespace Teuchos {
// Forward declaration of Teuchos::Comm, so that we can use
// RCP<Comm<int> > as the argument of methods defined in this header
// file, without needing to include Teuchos_Comm.hpp.
template<class Ordinal>
class Comm;
}
namespace TSQR {
namespace Test {
/// \brief Return a Kokkos Node instance with the given parameters.
///
/// \param plist [in/out] List of parameters for the Node. This
/// function reserves the right to modify the input parameter
/// list (for example, to fill in any missing parameters with
/// defaults). Do not rely on this behavior.
template<class NodeType>
Teuchos::RCP<NodeType>
getNode (const Teuchos::RCP<Teuchos::ParameterList>& plist)
{
using Teuchos::rcp;
using Teuchos::rcp_const_cast;
return rcp (new NodeType (*plist));
}
/// \class Cons
/// \brief Typedef container enabling iteration over compile-time type list.
///
/// One can use the typedefs in a Cons to "iterate" recursively
/// over a list of types, that is defined at compile time.
/// CarType may be any type; these are the "values" in the type
/// list. CdrType must be either a Cons or a NullCons.
///
/// The names Cons, Car, and Cdr come from Lisp. (Don't write
/// "Lisp" in all caps, unless you are referring to early versions
/// of the language.) A cons is a list. If x is a cons, then
/// (car x) returns the head of the list, and (cdr x) returns the
/// rest of the list.
template<class CarType, class CdrType>
struct Cons {
typedef CarType car_type;
typedef CdrType cdr_type;
};
/// \class NullCons
/// \brief Base case for \c Cons template recursion.
///
/// NullCons doesn't need car_type or cdr_type typedefs. Classes
/// that iterate over a Cons type list should define
/// specializations that make sense for a NullCons, if they want
/// iteration to work for an empty type list (a NullCons).
struct NullCons {};
} // namespace Test
} // namespace TSQR
#endif // __TSQR_TestUtils_hpp
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