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//                           Intrepid Package
//                 Copyright (2007) 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.
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// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
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// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
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// Questions? Contact Pavel Bochev (pbboche@sandia.gov) or
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#ifndef INTREPID_REALSPACETOOLS_HPP
#define INTREPID_REALSPACETOOLS_HPP

#include "Intrepid_ConfigDefs.hpp"
#include "Intrepid_Types.hpp"
#include "Teuchos_oblackholestream.hpp"
#include "Teuchos_TestForException.hpp"

namespace Intrepid {
  
template<class Scalar>
class RealSpaceTools {
    
  public:

    static void absval(Scalar* absArray, const Scalar* inArray, const int size);


    static void absval(Scalar* inoutArray, const int size);


    template<class ArrayScalar>
    static void absval(ArrayScalar & absArray, const ArrayScalar & inArray);


    template<class ArrayScalar>
    static void absval(ArrayScalar & inoutAbsArray);


    static Scalar vectorNorm(const Scalar* inVec, const int dim, const ENorm normType);


    template<class VecArray>
    static Scalar vectorNorm(const VecArray & inVec, const ENorm normType);


    template<class NormArray, class VecArray>
    static void vectorNorm(NormArray & normArray, const VecArray & inVecs, const ENorm normType);


    static void transpose(Scalar* transposeMat, const Scalar* inMat, const int dim);


    template<class ArrayScalar>
    static void transpose(ArrayScalar & transposeMats, const ArrayScalar & inMats);


    static void inverse(Scalar* inverseMat, const Scalar* inMat, const int dim);


    template<class MatArray>
    static void inverse(MatArray & inverseMats, const MatArray & inMats);


    static Scalar det(const Scalar* inMat, const int dim);


    template<class ArrayScalar>
    static Scalar det(const ArrayScalar & inMat);


    template<class DetArray, class MatArray>
    static void det(DetArray & detArray, const MatArray & inMats);


    static void add(Scalar* sumArray, const Scalar* inArray1, const Scalar* inArray2, const int size);


    static void add(Scalar* inoutSumArray, const Scalar* inArray, const int size);


    template<class ArrayScalar>
    static void add(ArrayScalar & sumArray, const ArrayScalar & inArray1, const ArrayScalar & inArray2);


    template<class ArrayScalar>
    static void add(ArrayScalar & inoutSumArray, const ArrayScalar & inArray);


    static void subtract(Scalar* diffArray, const Scalar* inArray1, const Scalar* inArray2, const int size);


    static void subtract(Scalar* inoutDiffArray, const Scalar* inArray, const int size);


    template<class ArrayScalar>
    static void subtract(ArrayScalar & diffArray, const ArrayScalar & inArray1, const ArrayScalar & inArray2);


    template<class ArrayScalar>
    static void subtract(ArrayScalar & inoutDiffArray, const ArrayScalar & inArray);


    static void scale(Scalar* scaledArray, const Scalar* inArray, const int size, const Scalar scalar);


    static void scale(Scalar* inoutScaledArray, const int size, const Scalar scalar);


    template<class ArrayScalar>
    static void scale(ArrayScalar & scaledArray, const ArrayScalar & inArray, const Scalar scalar);


    template<class ArrayScalar>
    static void scale(ArrayScalar & inoutScaledArray, const Scalar scalar);


    static Scalar dot(const Scalar* inArray1, const Scalar* inArray2, const int size);


    template<class VecArray>
    static Scalar dot(const VecArray & inVec1, const VecArray & inVec2);


    template<class DotArray, class VecArray>
    static void dot(DotArray & dotArray, const VecArray & inVecs1, const VecArray & inVecs2);


    static void matvec(Scalar* matVec, const Scalar* inMat, const Scalar* inVec, const int dim);


    template<class MatArray, class VecArray>
    static void matvec(VecArray & matVecs, const MatArray & inMats, const VecArray & inVecs);

    
    template<class VecArrayOut, class VecArrayIn>
    static void vecprod(VecArrayOut &       vecProd, 
                        const VecArrayIn &  inLeft, 
                        const VecArrayIn &  inRight);
    
    
    
}; // class RealSpaceTools

} // end namespace Intrepid

// include templated definitions
#include <Intrepid_RealSpaceToolsDef.hpp>

#endif

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