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| #include <iostream>
#include <iomanip>
#include <ctime>
#include <algorithm>
#include <vector>
class matrice{
public :
matrice() { _li=0; _col=0; _val = 0;};
matrice(int li, int col);
matrice(const matrice &m); // cons de copie
float& operator()(int li, int col); // setter
float operator()(int li, int col) const; // getter
matrice& operator=(const matrice &m);
matrice operator+(const matrice & m2);
int lignes(){ return _li;};
int colonnes(){ return _col;};
private :
int _li, _col;
float *_val;
};
class matricesc{
public :
matricesc() { _li=0; _col=0; _val = 0;};
matricesc(int li, int col);
matricesc(const matricesc & m); // cons de copie
float& operator()(int li, int col); // setter
float operator()(int li, int col) const; // getter
matricesc& operator=( matricesc m);
matricesc operator+(const matricesc & m2);
int lignes(){ return _li;};
int colonnes(){ return _col;};
private :
void swap(matricesc & other);
int _li, _col;
float *_val;
};
struct times{
clock_t first;
clock_t second;
};
int main(){
std::cout<<CLOCKS_PER_SEC<<std::endl;
std::vector <times> tab;
for(int turn = 0;turn<10;++turn){
times currentTime;
{
matrice m(3,3);
matrice n;
for(int i = 0; i<3; i++)
for(int j=0; j<3; j++)
m(i,j) = i*3 + j;
clock_t t;
t = clock(); // initialisation T0
for (int i = 0; i<1000000; i++)
n = m;
t = clock()-t; // t1 -t0 => nobre de clicks par seconde
currentTime.first = t;
}
{
matricesc m(3,3);
matricesc n;
for(int i = 0; i<3; i++)
for(int j=0; j<3; j++)
m(i,j) = i*3 + j;
clock_t t;
t = clock(); // initialisation T0
for (int i = 0; i<1000000; i++)
n = m;
t = clock()-t; // t1 -t0 => nobre de clicks par seconde
currentTime.second = t;
}
tab.push_back(currentTime);
}
float somme = 0.0;
for(size_t i = 0;i< tab.size(); ++i){
clock_t first = (float)tab[i].first;
clock_t second = (float)tab[i].second;
std::cout<<"exécution "<<i<<" : non swap = "<<first<<" swap = "<<second;
float ratio;
if(second < first){
ratio = (float)first/(float)second;
std::cout<<" swap plus rapide... ratio "<< ratio <<std::endl;
}else{
ratio = (float)second/(float)first;
std::cout<<" non swap plus rapide... ratio "<< ratio <<std::endl;
}
somme += ratio;
}
float moyenne = somme/(float)tab.size();
std::cout<<"ratio moyen "<<moyenne<<std::endl;
return 0;
}
matrice::matrice(int li , int col){
_li = li;
_col= col;
_val = new float[_li * _col];
}
matrice::matrice(const matrice &m){
_li = m._li;
_col = m._col;
delete[] _val;
int n = _li*_col;
_val = new float[n];
for(int i=0; i<n; i++)
_val[i] = m._val[i];
}
matrice matrice::operator+(const matrice &m2){
matrice temp(*this);
int n = temp._li * temp._col;
for(int i = 0; i<n; i++)
temp._val[i] = _val[i] + m2._val[i];
return temp;
}
matrice &matrice::operator=(const matrice &m){
if(this !=&m)
{
delete [] _val;
_li = m._li;
_col = m._col;
int n = _li*_col;
_val = new float[n];
for(int i = 0; i<n; i++)
_val[i] = m._val[i];
}
return *this;
}
float& matrice::operator()(int l, int c){
return _val[l*_col+c];
}
float matrice::operator()(int l, int c)const{
return _val[l*_col+c];
}
matricesc::matricesc(int li , int col){
_li = li;
_col= col;
_val = new float[_li * _col];
}
matricesc::matricesc(const matricesc &m){
_li = m._li;
_col = m._col;
int n = _li*_col;
_val = new float[n];
for(int i=0; i<n; i++)
_val[i] = m._val[i];
}
matricesc matricesc::operator+(const matricesc &m2){
matricesc temp(*this);
int n = temp._li * temp._col;
for(int i = 0; i<n; i++)
temp._val[i] = _val[i] + m2._val[i];
return temp;
}
matricesc &matricesc::operator=( matricesc m){
m.swap(*this);
return *this;
}
void matricesc::swap(matricesc &m){
std::swap(_li, m._li);
std::swap(_col, m._col);
std::swap(_val, m._val);
}
float& matricesc::operator()(int l, int c){
return _val[l*_col+c];
}
float matricesc::operator()(int l, int c)const{
return _val[l*_col+c];
} |
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