Positions where pt and p2 variables are written:

x(lpoint), y(mpoint), z(npoint), lpoint, mpoint, npoint=
  -2.4544       0.0000       0.0000           5     2     2

kx_fft(ikx+ipx*nx),ky_fft(iky+ipy*ny),kz_fft(ikz+ipz*nz)=
   3.0000       0.0000       0.0000