JVectorND.hh

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#ifndef __JMATH__JVECTORND__
#define __JMATH__JVECTORND__

#include <vector>
#include <ostream>

#include "JLang/JManip.hh"

/**
 * \author mdejong
 */

namespace JMATH {}
namespace JPP { using namespace JMATH; }

namespace JMATH {

  /**
   * Nx1 matrix.
   */
  struct JVectorND :
    public std::vector<double>
  {
    /**
     * Default constructor.
     */
    JVectorND() :
      std::vector<double>()
    {}


    /**
     * Constructor.
     *
     * \param  size          size
     */
    JVectorND(size_t size) :
      std::vector<double>(size, 0.0)
    {}
 

    /**
     * Get dot product.
     *
     * \param  vector        vector
     * \return               dot product
     */
    double getDot(const JVectorND& vector) const
    {
      double dot = 0.0;

      const double* p = this-> data();
      const double* q = vector.data();

      for (size_t i = this->size(); i != 0; --i, ++p, ++q) {
        dot += (*p) * (*q);
      }

      return dot;
    }


    /**
     * Print ASCII formatted output.
     *
     * \param  out      output stream
     * \param  object   Nx1 matrix
     * \return          output stream
     */
    friend inline std::ostream& operator<<(std::ostream& out, const JVectorND& object)
    {
      using namespace std;

      const JFormat format(out, getFormat<JVectorND>(JFormat_t(9, 3, std::ios::fixed | std::ios::showpos)));

      for (JVectorND::const_iterator i = object.begin(); i != object.end(); ++i) {
        out << format << *i << ' ';
      }

      out << endl;

      return out;
    }
  };
}

#endif