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// $Id$ 
// $Source$ 
// @HEADER
// ***********************************************************************
// 
//                           Stokhos Package
//                 Copyright (2009) Sandia Corporation
// 
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
// 
// 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 name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "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 SANDIA CORPORATION OR THE
// 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.
//
// Questions? Contact Eric T. Phipps (etphipp@sandia.gov).
// 
// ***********************************************************************
// @HEADER

#ifndef STOKHOS_ORTHOGPOLYEXPANSION_HPP
#define STOKHOS_ORTHOGPOLYEXPANSION_HPP

#include <cmath>
#include <algorithm>	// for std::min and std::max

#include "Stokhos_OrthogPolyApprox.hpp"
#include "Stokhos_OrthogPolyBasis.hpp"

namespace Stokhos {

  //! Abstract base class for orthogonal polynomial-based expansions
  template <typename ordinal_type, typename value_type, 
	    typename node_type = Stokhos::StandardStorage<ordinal_type, 
							  value_type> > 
  class OrthogPolyExpansion {
  public:

    //! Typename of TripleProduct tensor
    typedef Sparse3Tensor<ordinal_type, value_type> tp_type;

    //! Constructor
    OrthogPolyExpansion() {}

    //! Destructor
    virtual ~OrthogPolyExpansion() {}

    //! Get expansion size
    virtual ordinal_type size() const = 0;

    //! Get basis
    virtual Teuchos::RCP<const OrthogPolyBasis<ordinal_type, value_type> >
    getBasis() const = 0;

    //! Get triple product
    virtual Teuchos::RCP<const Sparse3Tensor<ordinal_type, value_type> >
    getTripleProduct() const = 0;
 
    // Operations
    virtual void unaryMinus(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;

    virtual void plusEqual(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const value_type& x) = 0;
    virtual void minusEqual(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const value_type& x) = 0;
    virtual void timesEqual(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const value_type& x) = 0;
    virtual void divideEqual(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const value_type& x) = 0;

    virtual void plusEqual(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& x) = 0;
    virtual void minusEqual(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& x) = 0;
    virtual void timesEqual(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& x) = 0;
    virtual void divideEqual(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& x) = 0;
    
    virtual void plus(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& b) = 0;
    virtual void plus(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const value_type& a, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& b) = 0;
    virtual void plus(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a, 
      const value_type& b) = 0;
    virtual void minus(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a,
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& b) = 0;
    virtual void minus(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const value_type& a, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& b) = 0;
    virtual void minus(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a, 
      const value_type& b) = 0;
    virtual void times(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& b) = 0;
    virtual void times(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const value_type& a, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& b) = 0;
    virtual void times(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a, 
      const value_type& b) = 0;
    virtual void divide(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& b) = 0;
    virtual void divide(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const value_type& a, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& b) = 0;
    virtual void divide(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a, 
      const value_type& b) = 0;

    virtual void exp(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;
    virtual void log(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;
    virtual void log10(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;
    virtual void sqrt(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;
    virtual void cbrt(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;
    virtual void pow(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& b) = 0;
    virtual void pow(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const value_type& a, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& b) = 0;
    virtual void pow(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a, 
      const value_type& b) = 0;
    virtual void cos(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;
    virtual void sin(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;
    virtual void tan(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;
    virtual void cosh(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;
    virtual void sinh(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;
    virtual void tanh(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;
    virtual void acos(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;
    virtual void asin(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;
    virtual void atan(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;
//     virtual void atan2(OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
// 	       const OrthogPolyApprox<ordinal_type, value_type, node_type>& a,
// 	       const OrthogPolyApprox<ordinal_type, value_type, node_type>& b) = 0;
//     virtual void atan2(OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
// 	       const T& a, 
// 	       const OrthogPolyApprox<ordinal_type, value_type, node_type>& b) = 0;
//     virtual void atan2(OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
// 	       const OrthogPolyApprox<ordinal_type, value_type, node_type>& a, 
// 	       const T& b) = 0;
    virtual void acosh(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;
    virtual void asinh(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;
    virtual void atanh(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;
    virtual void abs(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;
    virtual void fabs(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a) = 0;
    virtual void max(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a,
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& b) = 0;
    virtual void max(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const value_type& a, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& b) = 0;
    virtual void max(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a, 
      const value_type& b) = 0;
    virtual void min(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a,
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& b) = 0;
    virtual void min(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const value_type& a, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& b) = 0;
    virtual void min(
      OrthogPolyApprox<ordinal_type, value_type, node_type>& c, 
      const OrthogPolyApprox<ordinal_type, value_type, node_type>& a, 
      const value_type& b) = 0;

  private:

    // Prohibit copying
    OrthogPolyExpansion(const OrthogPolyExpansion&);

    // Prohibit Assignment
    OrthogPolyExpansion& operator=(const OrthogPolyExpansion& b);
    
  }; // class OrthogPolyExpansion

} // namespace Stokhos

#endif // STOKHOS_ORTHOGPOLYEXPANSION_HPP