text: //=================================================================================================
  /*!
  //  \file blaze/math/shims/Eval.h
  //  \brief Header file for the eval shim
  //
  //  Copyright (C) 2012-2018 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_SHIMS_EVAL_H_
  #define _BLAZE_MATH_SHIMS_EVAL_H_
  
  
  //*************************************************************************************************
  // Includes
  //*************************************************************************************************
  
  #include "../../system/Inline.h"
  #include "../../util/EnableIf.h"
  #include "../../util/typetraits/IsBuiltin.h"
  #include "../../util/typetraits/IsComplex.h"
  
  
  namespace blaze {
  
  //=================================================================================================
  //
  //  EVAL SHIM
  //
  //=================================================================================================
  
  //*************************************************************************************************
  /*!\brief Formal evaluation of the given argument.
  // \ingroup math_shims
  //
  // \param a The value/object to be evaluated.
  // \return The evaluated value/object.
  //
  // The \a eval shim represents an abstract interface for enforcing the evaluation of a
  // value/object of any given data type. For data types that don't require an evaluation,
  // as for instance built-in data types, the default behavior is not changed.
  */
  template< typename T >
  BLAZE_ALWAYS_INLINE constexpr EnableIf_t< IsBuiltin_v<T> || IsComplex_v<T>, const T& >
     eval( const T& a ) noexcept
  {
     return a;
  }
  //*************************************************************************************************
  
  } // namespace blaze
  
  #endif
  