/* ----------------------------------------------------------------------
   LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator 

   Original Version:
   http://lammps.sandia.gov, Sandia National Laboratories
   Steve Plimpton, sjplimp@sandia.gov 

   See the README file in the top-level LAMMPS directory. 

   ----------------------------------------------------------------------- 

   USER-CUDA Package and associated modifications:
   https://sourceforge.net/projects/lammpscuda/ 

   Christian Trott, christian.trott@tu-ilmenau.de
   Lars Winterfeld, lars.winterfeld@tu-ilmenau.de
   Theoretical Physics II, University of Technology Ilmenau, Germany 

   See the README file in the USER-CUDA directory. 

   This software is distributed under the GNU General Public License.
------------------------------------------------------------------------- */

__device__ inline F_FLOAT PairLJ96CutCuda_Eval(const F_FLOAT& rsq,const int ij_type,F_FLOAT& factor_lj,int& eflag, ENERGY_FLOAT& evdwl)
{
	const F_FLOAT r2inv = F_F(1.0)/rsq;
	const F_FLOAT r6inv = r2inv*r2inv*r2inv;
	const F_FLOAT r3inv = _SQRT_(r6inv);
	const F_FLOAT forcelj = r6inv * (_lj1[ij_type]*r3inv - _lj2[ij_type]);
    if(eflag) evdwl += factor_lj*(r6inv*(_lj3[ij_type]*r3inv-_lj4[ij_type]) - _offset[ij_type]);
	return factor_lj*forcelj*r2inv; 
}