//=================================================================================================
/*!
//  \file blaze/math/expressions/VecTransExpr.h
//  \brief Header file for the VecTransExpr base class
//
//  Copyright (C) 2012-2020 Klaus Iglberger - All Rights Reserved
//
//  This file is part of the Blaze library. You can redistribute it and/or modify it under
//  the terms of the New (Revised) BSD License. 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 names of the Blaze development group nor the names of its contributors
//     may be used to endorse or promote products derived from this software without specific
//     prior written permission.
//
//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER OR 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.
*/
//=================================================================================================

#ifndef _BLAZE_MATH_EXPRESSIONS_VECTRANSEXPR_H_
#define _BLAZE_MATH_EXPRESSIONS_VECTRANSEXPR_H_


//*************************************************************************************************
// Includes
//*************************************************************************************************

#include <blaze/math/expressions/TransExpr.h>
#include <blaze/util/FunctionTrace.h>


namespace blaze {

//=================================================================================================
//
//  CLASS DEFINITION
//
//=================================================================================================

//*************************************************************************************************
/*!\brief Base class for all vector transposition expression templates.
// \ingroup math
//
// The VecTransExpr class serves as a tag for all expression templates that implement a vector
// transposition operation. All classes, that represent a vector transposition operation and
// that are used within the expression template environment of the Blaze library have to derive
// publicly from this class in order to qualify as vector transposition expression template. Only
// in case a class is derived publicly from the VecTransExpr base class, the IsVecTransExpr type
// trait recognizes the class as valid vector transposition expression template.
*/
template< typename VT >  // Vector base type of the expression
struct VecTransExpr
   : public TransExpr<VT>
{};
//*************************************************************************************************




//=================================================================================================
//
//  GLOBAL RESTRUCTURING FUNCTIONS
//
//=================================================================================================

//*************************************************************************************************
/*! \cond BLAZE_INTERNAL */
/*!\brief Calculating the transpose of a transpose vector.
// \ingroup math
//
// \param vector The vector to be (re-)transposed.
// \return The transpose of the transpose vector.
//
// This function implements a performance optimized treatment of the transpose operation on
// a vector transpose expression. It returns an expression representing the transpose of a
// transpose vector:

   \code
   using blaze::columnVector;

   blaze::DynamicVector<double,columnVector> a, b;
   // ... Resizing and initialization
   b = trans( trans( a ) );
   \endcode
*/
template< typename VT >  // Vector base type of the expression
inline decltype(auto) trans( const VecTransExpr<VT>& vector )
{
   BLAZE_FUNCTION_TRACE;

   return (*vector).operand();
}
/*! \endcond */
//*************************************************************************************************

} // namespace blaze

#endif
