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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_Assert.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 ArrayAbs, class ArrayIn>
    static void absval(ArrayAbs & absArray, const ArrayIn & inArray);


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


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


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


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


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


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


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


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


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


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


    template<class ArrayDet, class ArrayIn>
    static void det(ArrayDet & detArray, const ArrayIn & 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 ArraySum, class ArrayIn1, class ArrayIn2>
    static void add(ArraySum & sumArray, const ArrayIn1 & inArray1, const ArrayIn2 & inArray2);


    template<class ArraySum, class ArrayIn>
    static void add(ArraySum & inoutSumArray, const ArrayIn & 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 ArrayDiff, class ArrayIn1, class ArrayIn2>
    static void subtract(ArrayDiff & diffArray, const ArrayIn1 & inArray1, const ArrayIn2 & inArray2);


    template<class ArrayDiff, class ArrayIn>
    static void subtract(ArrayDiff & inoutDiffArray, const ArrayIn & 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 ArrayScaled, class ArrayIn>
    static void scale(ArrayScaled & scaledArray, const ArrayIn & inArray, const Scalar scalar);


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


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


    template<class ArrayVec1, class ArrayVec2>
    static Scalar dot(const ArrayVec1 & inVec1, const ArrayVec2 & inVec2);


    template<class ArrayDot, class ArrayVec1, class ArrayVec2>
    static void dot(ArrayDot & dotArray, const ArrayVec1 & inVecs1, const ArrayVec2 & inVecs2);


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


    template<class ArrayMatVec, class ArrayMat, class ArrayVec>
    static void matvec(ArrayMatVec & matVecs, const ArrayMat & inMats, const ArrayVec & inVecs);

    
    template<class ArrayVecProd, class ArrayIn1, class ArrayIn2>
    static void vecprod(ArrayVecProd & vecProd, const ArrayIn1 & inLeft, const ArrayIn2 & inRight);
    
    
    
}; // class RealSpaceTools

} // end namespace Intrepid

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

#endif