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// Thyra: Interfaces and Support for Abstract Numerical Algorithms
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#ifndef THYRA_IDENTITY_LINEAR_OP_BASE_HPP
#define THYRA_IDENTITY_LINEAR_OP_BASE_HPP
#include "Thyra_LinearOpBase.hpp"
namespace Thyra {
/** \brief Interface class for identity linear operators.
*
* This interface represents a identity linear operator <tt>M</tt> of the form:
\verbatim
M = I
\endverbatim
*
* In other words, subclasses define <tt>apply()</tt> as:
*
\verbatim
y = alpha*M*x + beta*y
= alpha * x + beta * y
\endverbatim
*
* \ingroup Thyra_Op_Vec_extended_interfaces_code_grp
*/
template<class Scalar>
class IdentityLinearOpBase : virtual public LinearOpBase<Scalar>
{};
} // namespace Thyra
#endif // THYRA_IDENTITY_LINEAR_OP_BASE_HPP
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