fevector.cpp

向量存储及运算。 好玩

#include "StdAfx.h"
#include "FeVector.h"

CFeVector::CFeVector(void)
{
	v = NULL;
}
CFeVector::CFeVector(CFeVector& a )
{
	v = NULL;
	m_lN = a.m_lN;
	Init(m_lN);
	for(long i = 0; i < m_lN; i++)
	{
		v[i] = a.v[i];
	}
	
}
CFeVector::CFeVector(long m_lNin)
{
	v = NULL;
	m_lN =  m_lNin;
	Init(m_lN);
}
CFeVector::CFeVector(long m_lNin,double* vIn)
{
	v = NULL;
	m_lN = m_lNin;
	v = vIn;
}
void CFeVector::Init(long m_lNin)
{
	m_lN = m_lNin;
	if(v) delete[] v;
	v = new double[m_lN];
	for(long i = 0; i < m_lN; i++)
	{
		v[i] = 0;
	}
}

CFeVector& CFeVector::operator =(CFeVector& a )
{
	m_lN = a.m_lN;
	Init(m_lN);
	for(long i = 0; i < m_lN; i++)
	{
		v[i]  = a.v[i];
	}
	return* this;
}
CFeVector CFeVector::operator +(CFeVector& a )
{
	double* vp =new double[a.m_lN];
	for(long i = 0; i < m_lN; i++)
	{
		vp[i] = v[i] + a.v[i];
	}
	return CFeVector(a.m_lN,vp);
}
CFeVector CFeVector::operator -(CFeVector& a )
{
	double* vp =new double[a.m_lN];
	for(long i = 0; i < m_lN; i++)
	{
		vp[i] = v[i] - a.v[i];
	}
	return CFeVector(a.m_lN,vp);
}
CFeVector CFeVector::operator +(double a )
{
	double* vp =new double[m_lN];
	for(long i = 0; i < m_lN; i++)
	{
		vp[i] = v[i] + a;
	}
	return CFeVector(m_lN,vp);
}
double CFeVector::operator *(CFeVector& a )
{
	double vp = 0;
	for(long i = 0; i < m_lN; i++)
	{
		vp += v[i] * a.v[i];
	}
	return vp;
}
CFeVector CFeVector::operator *(double a )
{
	double* vp =new double[m_lN];
	for(long i = 0; i < m_lN; i++)
	{
		vp[i] = v[i] * a;
	}
	return CFeVector(m_lN,vp);
}
CFeVector::~CFeVector(void)
{
	Destory();
}
void CFeVector::Destory(void)
{
	if(v)
	{
		delete[] v;
	}
}
void CFeVector::set_e(long i, double a)
{
	v[i] = a;
}
double CFeVector::get_e(long i)
{
	return v[i];
}