/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*//*                                                                           *//*                                                                           *//*                   MV++ Numerical Matrix/Vector C++ Library                *//*                             MV++ Version 1.5                              *//*                                                                           *//*                                  R. Pozo                                  *//*               National Institute of Standards and Technology              *//*                                                                           *//*                                  NOTICE                                   *//*                                                                           *//* Permission to use, copy, modify, and distribute this software and         *//* its documentation for any purpose and without fee is hereby granted       *//* provided that this permission notice appear in all copies and             *//* supporting documentation.                                                 *//*                                                                           *//* Neither the Institution (National Institute of Standards and Technology)  *//* nor the author makes any representations about the suitability of this    *//* software for any purpose.  This software is provided ``as is''without     *//* expressed or implied warranty.                                            *//*                                                                           *//*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/////          Basic vector class (float precision)//#include <iostream>                                 #include "mvvf.h"MV_Vector_float::MV_Vector_float()  : p_(0), dim_(0) , ref_(0){};MV_Vector_float::MV_Vector_float( int n) : p_(new float[n]), dim_(n),             ref_(0){    if (p_ == NULL)    {        std::cerr << "Error: NULL pointer in MV_Vector_float(int) constructor " << "\n";        std::cerr << "       Most likely out of memory... " << "\n";        exit(1);    }}MV_Vector_float::MV_Vector_float( int n, const float& v) :         p_(new float[n]), dim_(n), ref_(0){    if (p_ == NULL)    {        std::cerr << "Error: NULL pointer in MV_Vector_float(int) constructor " << "\n";        std::cerr << "       Most likely out of memory... " << "\n";        exit(1);    }    for (int i=0; i<n; i++)        p_[i] = v;}// operators and member functions//MV_Vector_float& MV_Vector_float::operator=(const float & m) {#ifdef TRACE_VEC    cout << "> MV_Vector_float::operator=(const float & m)  " << "\n";#endif    // unroll loops to depth of length 4    int N = size();    int Nminus4 = N-4;    int i;    for (i=0; i<Nminus4; )    {        p_[i++] = m;        p_[i++] = m;        p_[i++] = m;        p_[i++] = m;    }    for (; i<N; p_[i++] = m);   // finish off last piece...#ifdef TRACE_VEC    cout << "< MV_Vector_float::operator=(const float & m)  " << "\n";#endif    return *this;}MV_Vector_float& MV_Vector_float::newsize( int n){#ifdef TRACE_VEC    cout << "> MV_Vector_float::newsize( int n) " << "\n";#endif    if (ref_ )                  // is this structure just a pointer?    {        {            std::cerr << "MV_Vector::newsize can't operator on references.\n";            exit(1);        }    }    else    if (dim_ != n )                     // only delete and new if    {                                   // the size of memory is really        if (p_) delete [] p_;           // changing, otherwise just        p_ = new float[n];              // copy in place.        if (p_ == NULL)        {            std::cerr << "Error : NULL pointer in operator= " << "\n";            exit(1);        }        dim_ = n;    }#ifdef TRACE_VEC    cout << "< MV_Vector_float::newsize( int n) " << "\n";#endif    return *this;}    MV_Vector_float& MV_Vector_float::operator=(const MV_Vector_float & m) {    int N = m.dim_;    int i;    if (ref_ )                  // is this structure just a pointer?    {        if (dim_ != m.dim_)     // check conformance,        {            std::cerr << "MV_VectorRef::operator=  non-conformant assignment.\n";            exit(1);        }        // handle overlapping matrix references        if ((m.p_ + m.dim_) >= p_)        {            // overlap case, copy backwards to avoid overwriting results            for (i= N-1; i>=0; i--)                p_[i] = m.p_[i];        }        else        {            for (i=0; i<N; i++)                p_[i] = m.p_[i];        }                    }    else    {        newsize(N);        // no need to test for overlap, since this region is new        for (i =0; i< N; i++)       // careful not to use bcopy()            p_[i] = m.p_[i];        // here, but float::operator= float.    }    return *this;   }MV_Vector_float::MV_Vector_float(const MV_Vector_float & m) : p_(new float[m.dim_]),     dim_(m.dim_) , ref_(0){    if (p_ == NULL)    {        std::cerr << "Error:  Null pointer in MV_Vector_float(const MV_Vector&); " << "\n";        exit(1);    }    int N = m.dim_;    for (int i=0; i<N; i++)        p_[i] = m.p_[i];}MV_Vector_float::MV_Vector_float(float* d,  int n) : p_(new float[n]),       dim_(n) , ref_(0){    if (p_ == NULL)    {        std::cerr << "Error: Null pointer in MV_Vector_float(float*, int) " << "\n";        exit(1);    }    for (int i=0; i<n; i++)        p_[i] = d[i];}MV_Vector_float::MV_Vector_float(const float* d,  int n) : p_(new float[n]),       dim_(n) , ref_(0){    if (p_ == NULL)    {        std::cerr << "Error: Null pointer in MV_Vector_float(float*, int) " << "\n";        exit(1);    }    for (int i=0; i<n; i++)        p_[i] = d[i];}MV_Vector_float MV_Vector_float::operator()(void){    return MV_Vector_float(p_, dim_, MV_Vector_::ref);}const MV_Vector_float MV_Vector_float::operator()(void) const{    return MV_Vector_float(p_, dim_, MV_Vector_::ref);}MV_Vector_float MV_Vector_float::operator()(const MV_VecIndex &I) {    // default parameters    if (I.all())        return MV_Vector_float(p_, dim_, MV_Vector_::ref);    else    {    // check that index is not out of bounds    //        if ( I.end() >= dim_)        {            std::cerr << "MV_VecIndex: (" << I.start() << ":" << I.end() <<                 ") too big for matrix (0:" << dim_ - 1 << ") " << "\n";            exit(1);        }        return MV_Vector_float(p_+ I.start(), I.end() - I.start() + 1,            MV_Vector_::ref);    }}const MV_Vector_float MV_Vector_float::operator()(const MV_VecIndex &I) const{    // check that index is not out of bounds    //    if (I.all())        return MV_Vector_float(p_, dim_, MV_Vector_::ref);    else    {      if ( I.end() >= dim_)      {        std::cerr << "MV_VecIndex: (" << I.start() << ":" << I.end() <<                 ") too big for matrix (0:" << dim_ - 1 << ") " << "\n";        exit(1);      }      return MV_Vector_float(p_+ I.start(), I.end() - I.start() + 1,            MV_Vector_::ref);    }}MV_Vector_float::~MV_Vector_float(){        if (p_ && !ref_ ) delete [] p_;}std::ostream&   operator<<(std::ostream& s, const MV_Vector_float& V){    int N = V.size();    for (int i=0; i< N; i++)        s << V(i) << "\n";        return s;}