      static double mp_vargminabs(_cimg_math_parser& mp) {
        _cimg_mp_vfunc(res = (double)(&vec.minabs() - vec.data()));
      }
      static double mp_vargminabs(_cimg_math_parser& mp) {
        _cimg_mp_vfunc(res = (double)(&vec.minabs() - vec.data()));
      }