void wNaf(int* tabResult, int w, int k){
  int tmp,y;
  int i=0;
  y = squareAndMultiply(2,w);
  while(k>0){
    if((k%2)==1){
      if (k%y > k%(y/2)){
        tmp=(k%y)-y;


      } else {
        tmp=k%y;
        //tabResult[i]=tmp;
        //printf("k=%d i=%d tmp=%d \n",k,i,tmp);
      }
      k=k-tmp;
    } else {
      tmp=0;
      //tabResult[i]=tmp;
      //printf("k=%d i=%d tmp=%d \n",k,i,tmp);
    }
    printf("k=%d i=%d tmp=%d \n",k,i,tmp);
    tabResult[i]=tmp;
    k=k/2;
    i=i+1;
  }

}