tnt_array1d_utils.h

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/*
*
* Template Numerical Toolkit (TNT)
*
* Mathematical and Computational Sciences Division
* National Institute of Technology,
* Gaithersburg, MD USA
*
*
* This software was developed at the National Institute of Standards and
* Technology (NIST) by employees of the Federal Government in the course
* of their official duties. Pursuant to title 17 Section 105 of the
* United States Code, this software is not subject to copyright protection
* and is in the public domain. NIST assumes no responsibility whatsoever for
* its use by other parties, and makes no guarantees, expressed or implied,
* about its quality, reliability, or any other characteristic.
*
*/

#ifndef TNT_ARRAY1D_UTILS_H
#define TNT_ARRAY1D_UTILS_H

#include <cstdlib>
#include <cassert>

namespace TNT
{


template <class T>
std::ostream& operator<<(std::ostream &s, const Array1D<T> &A)
{
    int N=A.dim1();

#ifdef TNT_DEBUG
        s << "addr: " << (void *) &A[0] << "\n";
#endif
    s << N << "\n";
    for (int j=0; j<N; j++)
    {
       s << A[j] << "\n";
    }
    s << "\n";

    return s;
}

template <class T>
std::istream& operator>>(std::istream &s, Array1D<T> &A)
{
        int N;
        s >> N;

        Array1D<T> B(N);
        for (int i=0; i<N; i++)
                s >> B[i];
        A = B;
        return s;
}



template <class T>
Array1D<T> operator+(const Array1D<T> &A, const Array1D<T> &B)
{
        int n = A.dim1();

        if (B.dim1() != n )
                return Array1D<T>();

        else
        {
                Array1D<T> C(n);

                for (int i=0; i<n; i++)
                {
                        C[i] = A[i] + B[i];
                }
                return C;
        }
}



template <class T>
Array1D<T> operator-(const Array1D<T> &A, const Array1D<T> &B)
{
        int n = A.dim1();

        if (B.dim1() != n )
                return Array1D<T>();

        else
        {
                Array1D<T> C(n);

                for (int i=0; i<n; i++)
                {
                        C[i] = A[i] - B[i];
                }
                return C;
        }
}


template <class T>
Array1D<T> operator*(const Array1D<T> &A, const Array1D<T> &B)
{
        int n = A.dim1();

        if (B.dim1() != n )
                return Array1D<T>();

        else
        {
                Array1D<T> C(n);

                for (int i=0; i<n; i++)
                {
                        C[i] = A[i] * B[i];
                }
                return C;
        }
}


template <class T>
Array1D<T> operator/(const Array1D<T> &A, const Array1D<T> &B)
{
        int n = A.dim1();

        if (B.dim1() != n )
                return Array1D<T>();

        else
        {
                Array1D<T> C(n);

                for (int i=0; i<n; i++)
                {
                        C[i] = A[i] / B[i];
                }
                return C;
        }
}









template <class T>
Array1D<T>&  operator+=(Array1D<T> &A, const Array1D<T> &B)
{
        int n = A.dim1();

        if (B.dim1() == n)
        {
                for (int i=0; i<n; i++)
                {
                                A[i] += B[i];
                }
        }
        return A;
}




template <class T>
Array1D<T>&  operator-=(Array1D<T> &A, const Array1D<T> &B)
{
        int n = A.dim1();

        if (B.dim1() == n)
        {
                for (int i=0; i<n; i++)
                {
                                A[i] -= B[i];
                }
        }
        return A;
}



template <class T>
Array1D<T>&  operator*=(Array1D<T> &A, const Array1D<T> &B)
{
        int n = A.dim1();

        if (B.dim1() == n)
        {
                for (int i=0; i<n; i++)
                {
                                A[i] *= B[i];
                }
        }
        return A;
}




template <class T>
Array1D<T>&  operator/=(Array1D<T> &A, const Array1D<T> &B)
{
        int n = A.dim1();

        if (B.dim1() == n)
        {
                for (int i=0; i<n; i++)
                {
                                A[i] /= B[i];
                }
        }
        return A;
}






} // namespace TNT

#endif