Exemplo n.º 1
0
void deriv_Sb_D_psi(spinor * const l, spinor * const k, 
		    hamiltonian_field_t * const hf, const double factor) {
#ifdef BGL
  __alignx(16, l);
  __alignx(16, k);
#endif

  /* for parallelization */
#ifdef MPI
  xchange_lexicfield(k);
  xchange_lexicfield(l);
#endif
  
#ifdef OMP
#define static
#pragma omp parallel
  {
#endif
  
  int ix,iy;
  su3 * restrict up ALIGN;
  su3 * restrict um ALIGN;
  static su3 v1,v2;
  static su3_vector psia,psib,phia,phib;
  static spinor rr;
/*   spinor * restrict r ALIGN; */
  spinor * restrict sp ALIGN;
  spinor * restrict sm ALIGN;

#ifdef OMP
#undef static
#endif

#ifdef _KOJAK_INST
#pragma pomp inst begin(derivSb)
#endif
#ifdef XLC
#pragma disjoint(*sp, *sm, *up, *um)
#endif

  /************** loop over all lattice sites ****************/
#ifdef OMP
#pragma omp for
#endif
  for(ix = 0; ix < (VOLUME); ix++){
    rr = (*(l + ix));
    /*     rr=g_spinor_field[l][icx-ioff]; */

    /*multiply the left vector with gamma5*/
    _vector_minus_assign(rr.s2, rr.s2);
    _vector_minus_assign(rr.s3, rr.s3);

    /*********************** direction +0 ********************/

    iy=g_iup[ix][0];

    sp = k + iy;
    up=&hf->gaugefield[ix][0];
      
    _vector_add(psia,(*sp).s0,(*sp).s2);
    _vector_add(psib,(*sp).s1,(*sp).s3);
      
    _vector_add(phia,rr.s0,rr.s2);
    _vector_add(phib,rr.s1,rr.s3);

    _vector_tensor_vector_add(v1, phia, psia, phib, psib);
    _su3_times_su3d(v2,*up,v1);
    _complex_times_su3(v1,ka0,v2);
    _trace_lambda_mul_add_assign_nonlocal(hf->derivative[ix][0], 2.*factor, v1);

    /************** direction -0 ****************************/

    iy=g_idn[ix][0];

    sm = k + iy;
    um=&hf->gaugefield[iy][0];
      
    _vector_sub(psia,(*sm).s0,(*sm).s2);
    _vector_sub(psib,(*sm).s1,(*sm).s3);

    _vector_sub(phia,rr.s0,rr.s2);
    _vector_sub(phib,rr.s1,rr.s3);

    _vector_tensor_vector_add(v1, psia, phia, psib, phib);
    _su3_times_su3d(v2,*um,v1);
    _complex_times_su3(v1,ka0,v2);
    _trace_lambda_mul_add_assign_nonlocal(hf->derivative[iy][0], 2.*factor, v1);

    /*************** direction +1 **************************/

    iy=g_iup[ix][1];

    sp = k + iy;
    up=&hf->gaugefield[ix][1];      

    _vector_i_add(psia,(*sp).s0,(*sp).s3);
    _vector_i_add(psib,(*sp).s1,(*sp).s2);

    _vector_i_add(phia,rr.s0,rr.s3);
    _vector_i_add(phib,rr.s1,rr.s2);

    _vector_tensor_vector_add(v1, phia, psia, phib, psib);
    _su3_times_su3d(v2,*up,v1);
    _complex_times_su3(v1,ka1,v2);
    _trace_lambda_mul_add_assign_nonlocal(hf->derivative[ix][1], 2.*factor, v1);

    /**************** direction -1 *************************/

    iy=g_idn[ix][1];

    sm = k + iy;
    um=&hf->gaugefield[iy][1];
      
    _vector_i_sub(psia,(*sm).s0,(*sm).s3);
    _vector_i_sub(psib,(*sm).s1,(*sm).s2);

    _vector_i_sub(phia,rr.s0,rr.s3);
    _vector_i_sub(phib,rr.s1,rr.s2);

    _vector_tensor_vector_add(v1, psia, phia, psib, phib);
    _su3_times_su3d(v2,*um,v1);
    _complex_times_su3(v1,ka1,v2);
    _trace_lambda_mul_add_assign_nonlocal(hf->derivative[iy][1], 2.*factor, v1);

    /*************** direction +2 **************************/

    iy=g_iup[ix][2];

    sp = k + iy;
    up=&hf->gaugefield[ix][2];
      
    _vector_add(psia,(*sp).s0,(*sp).s3);
    _vector_sub(psib,(*sp).s1,(*sp).s2);
      
    _vector_add(phia,rr.s0,rr.s3);
    _vector_sub(phib,rr.s1,rr.s2);

    _vector_tensor_vector_add(v1, phia, psia, phib, psib);
    _su3_times_su3d(v2,*up,v1);
    _complex_times_su3(v1,ka2,v2);
    _trace_lambda_mul_add_assign_nonlocal(hf->derivative[ix][2], 2.*factor, v1);

    /***************** direction -2 ************************/

    iy=g_idn[ix][2];

    sm = k + iy;
    um=&hf->gaugefield[iy][2];
      
    _vector_sub(psia,(*sm).s0,(*sm).s3);
    _vector_add(psib,(*sm).s1,(*sm).s2);

    _vector_sub(phia,rr.s0,rr.s3);
    _vector_add(phib,rr.s1,rr.s2);

    _vector_tensor_vector_add(v1, psia, phia, psib, phib);
    _su3_times_su3d(v2,*um,v1);
    _complex_times_su3(v1,ka2,v2);
    _trace_lambda_mul_add_assign_nonlocal(hf->derivative[iy][2], 2.*factor, v1);

    /****************** direction +3 ***********************/

    iy=g_iup[ix][3];

    sp = k + iy;
    up=&hf->gaugefield[ix][3];
      
    _vector_i_add(psia,(*sp).s0,(*sp).s2);
    _vector_i_sub(psib,(*sp).s1,(*sp).s3);

    _vector_i_add(phia,rr.s0,rr.s2);
    _vector_i_sub(phib,rr.s1,rr.s3);

    _vector_tensor_vector_add(v1, phia, psia, phib, psib);
    _su3_times_su3d(v2,*up,v1);
    _complex_times_su3(v1,ka3,v2);
    _trace_lambda_mul_add_assign_nonlocal(hf->derivative[ix][3], 2.*factor, v1);

    /***************** direction -3 ************************/

    iy=g_idn[ix][3];

    sm = k + iy;
    um=&hf->gaugefield[iy][3];
      
    _vector_i_sub(psia,(*sm).s0,(*sm).s2);
    _vector_i_add(psib,(*sm).s1,(*sm).s3);

    _vector_i_sub(phia,rr.s0,rr.s2);
    _vector_i_add(phib,rr.s1,rr.s3);

    _vector_tensor_vector_add(v1, psia, phia, psib, phib);
    _su3_times_su3d(v2,*um,v1);
    _complex_times_su3(v1,ka3,v2);
    _trace_lambda_mul_add_assign_nonlocal(hf->derivative[iy][3], 2.*factor, v1);
     
    /****************** end of loop ************************/
  }
#ifdef _KOJAK_INST
#pragma pomp inst end(derivSb)
#endif

#ifdef OMP
  } /*OpenMP closing brace */
#endif
}
Exemplo n.º 2
0
void deriv_Sb_D_psi(spinor * const l, spinor * const k) {
/* const int l, const int k){ */
  int ix,iy;
  su3 * restrict up ALIGN;
  su3 * restrict um ALIGN;
/*   su3adj * restrict ddd; */
/*   static su3adj der; */
  static su3 v1,v2;
  static su3_vector psia,psib,phia,phib;
  static spinor rr;
/*   spinor * restrict r ALIGN; */
  spinor * restrict sp ALIGN;
  spinor * restrict sm ALIGN;

#ifdef _KOJAK_INST
#pragma pomp inst begin(derivSb)
#endif
#ifdef XLC
#pragma disjoint(*sp, *sm, *up, *um)
#endif

#ifdef BGL
  __alignx(16, l);
  __alignx(16, k);
#endif

  /* for parallelization */
#ifdef MPI
  xchange_lexicfield(k);
  xchange_lexicfield(l);
#endif
  /************** loop over all lattice sites ****************/

  for(ix = 0; ix < (VOLUME); ix++){
    rr = (*(l + ix));
    /*     rr=g_spinor_field[l][icx-ioff]; */

    /*multiply the left vector with gamma5*/
    _vector_minus_assign(rr.s2, rr.s2);
    _vector_minus_assign(rr.s3, rr.s3);

    /*********************** direction +0 ********************/

    iy=g_iup[ix][0];

    sp = k + iy;
/*     sp=&g_spinor_field[k][icy]; */
    up=&g_gauge_field[ix][0];
      
    _vector_add(psia,(*sp).s0,(*sp).s2);
    _vector_add(psib,(*sp).s1,(*sp).s3);
      
    _vector_add(phia,rr.s0,rr.s2);
    _vector_add(phib,rr.s1,rr.s3);

    _vector_tensor_vector_add(v1, phia, psia, phib, psib);
/*     _vector_tensor_vector(v1,phia,psia); */
/*     _vector_tensor_vector(v2,phib,psib); */
/*     _su3_plus_su3(v1,v1,v2); */
    _su3_times_su3d(v2,*up,v1);
    _complex_times_su3(v1,ka0,v2);
    _trace_lambda_add_assign(df0[ix][0], v1);
/*     _trace_lambda(der,v1); */
/*     ddd=&df0[ix][0]; */
/*     _add_su3adj(*ddd,der); */

    /************** direction -0 ****************************/

    iy=g_idn[ix][0];

    sm = k + iy;
/*     sm=&g_spinor_field[k][icy]; */
    um=&g_gauge_field[iy][0];
      
    _vector_sub(psia,(*sm).s0,(*sm).s2);
    _vector_sub(psib,(*sm).s1,(*sm).s3);

    _vector_sub(phia,rr.s0,rr.s2);
    _vector_sub(phib,rr.s1,rr.s3);

    _vector_tensor_vector_add(v1, psia, phia, psib, phib);
/*     _vector_tensor_vector(v1,psia,phia); */
/*     _vector_tensor_vector(v2,psib,phib); */
/*     _su3_plus_su3(v1,v1,v2); */
    _su3_times_su3d(v2,*um,v1);
    _complex_times_su3(v1,ka0,v2);
    _trace_lambda_add_assign(df0[iy][0], v1);
/*     _trace_lambda(der,v1); */
/*     ddd=&df0[iy][0]; */
/*     _add_su3adj(*ddd,der); */

    /*************** direction +1 **************************/

    iy=g_iup[ix][1];

    sp = k + iy;
    /*     sp=&g_spinor_field[k][icy]; */
    up=&g_gauge_field[ix][1];      

    _vector_i_add(psia,(*sp).s0,(*sp).s3);
    _vector_i_add(psib,(*sp).s1,(*sp).s2);

    _vector_i_add(phia,rr.s0,rr.s3);
    _vector_i_add(phib,rr.s1,rr.s2);

    _vector_tensor_vector_add(v1, phia, psia, phib, psib);
/*     _vector_tensor_vector(v1,phia,psia); */
/*     _vector_tensor_vector(v2,phib,psib); */
/*     _su3_plus_su3(v1,v1,v2); */
    _su3_times_su3d(v2,*up,v1);
    _complex_times_su3(v1,ka1,v2);
    _trace_lambda_add_assign(df0[ix][1], v1);
/*     _trace_lambda(der,v1); */
/*     ddd=&df0[ix][1]; */
/*     _add_su3adj(*ddd,der); */

    /**************** direction -1 *************************/

    iy=g_idn[ix][1];

    sm = k + iy;
    /*     sm=&g_spinor_field[k][icy]; */
    um=&g_gauge_field[iy][1];
      
    _vector_i_sub(psia,(*sm).s0,(*sm).s3);
    _vector_i_sub(psib,(*sm).s1,(*sm).s2);

    _vector_i_sub(phia,rr.s0,rr.s3);
    _vector_i_sub(phib,rr.s1,rr.s2);

    _vector_tensor_vector_add(v1, psia, phia, psib, phib);
/*     _vector_tensor_vector(v1,psia,phia); */
/*     _vector_tensor_vector(v2,psib,phib); */
/*     _su3_plus_su3(v1,v1,v2); */
    _su3_times_su3d(v2,*um,v1);
    _complex_times_su3(v1,ka1,v2);
    _trace_lambda_add_assign(df0[iy][1], v1);
/*     _trace_lambda(der,v1); */
/*     ddd=&df0[iy][1]; */
/*     _add_su3adj(*ddd,der); */

    /*************** direction +2 **************************/

    iy=g_iup[ix][2];

    sp = k + iy;
    /*     sp=&g_spinor_field[k][icy]; */
    up=&g_gauge_field[ix][2];
      
    _vector_add(psia,(*sp).s0,(*sp).s3);
    _vector_sub(psib,(*sp).s1,(*sp).s2);
      
    _vector_add(phia,rr.s0,rr.s3);
    _vector_sub(phib,rr.s1,rr.s2);

    _vector_tensor_vector_add(v1, phia, psia, phib, psib);
/*     _vector_tensor_vector(v1,phia,psia); */
/*     _vector_tensor_vector(v2,phib,psib); */
/*     _su3_plus_su3(v1,v1,v2); */
    _su3_times_su3d(v2,*up,v1);
    _complex_times_su3(v1,ka2,v2);
    _trace_lambda_add_assign(df0[ix][2], v1);
/*     _trace_lambda(der,v1); */
/*     ddd=&df0[ix][2]; */
/*     _add_su3adj(*ddd,der); */

    /***************** direction -2 ************************/

    iy=g_idn[ix][2];

    sm = k + iy;
    /*     sm=&g_spinor_field[k][icy]; */
    um=&g_gauge_field[iy][2];
      
    _vector_sub(psia,(*sm).s0,(*sm).s3);
    _vector_add(psib,(*sm).s1,(*sm).s2);

    _vector_sub(phia,rr.s0,rr.s3);
    _vector_add(phib,rr.s1,rr.s2);

    _vector_tensor_vector_add(v1, psia, phia, psib, phib);
/*     _vector_tensor_vector(v1,psia,phia); */
/*     _vector_tensor_vector(v2,psib,phib); */
/*     _su3_plus_su3(v1,v1,v2); */
    _su3_times_su3d(v2,*um,v1);
    _complex_times_su3(v1,ka2,v2);
    _trace_lambda_add_assign(df0[iy][2], v1);
/*     _trace_lambda(der,v1); */
/*     ddd=&df0[iy][2]; */
/*     _add_su3adj(*ddd,der); */

    /****************** direction +3 ***********************/

    iy=g_iup[ix][3];

    sp = k + iy;
    /*     sp=&g_spinor_field[k][icy]; */
    up=&g_gauge_field[ix][3];
      
    _vector_i_add(psia,(*sp).s0,(*sp).s2);
    _vector_i_sub(psib,(*sp).s1,(*sp).s3);

    _vector_i_add(phia,rr.s0,rr.s2);
    _vector_i_sub(phib,rr.s1,rr.s3);

    _vector_tensor_vector_add(v1, phia, psia, phib, psib);
/*     _vector_tensor_vector(v1,phia,psia); */
/*     _vector_tensor_vector(v2,phib,psib); */
/*     _su3_plus_su3(v1,v1,v2); */
    _su3_times_su3d(v2,*up,v1);
    _complex_times_su3(v1,ka3,v2);
    _trace_lambda_add_assign(df0[ix][3], v1);
/*     _trace_lambda(der,v1); */
/*     ddd=&df0[ix][3]; */
/*     _add_su3adj(*ddd,der); */

    /***************** direction -3 ************************/

    iy=g_idn[ix][3];

    sm = k + iy;
    /*     sm=&g_spinor_field[k][icy]; */
    um=&g_gauge_field[iy][3];
      
    _vector_i_sub(psia,(*sm).s0,(*sm).s2);
    _vector_i_add(psib,(*sm).s1,(*sm).s3);

    _vector_i_sub(phia,rr.s0,rr.s2);
    _vector_i_add(phib,rr.s1,rr.s3);

    _vector_tensor_vector_add(v1, psia, phia, psib, phib);
/*     _vector_tensor_vector(v1,psia,phia); */
/*     _vector_tensor_vector(v2,psib,phib); */
/*     _su3_plus_su3(v1,v1,v2); */
    _su3_times_su3d(v2,*um,v1);
    _complex_times_su3(v1,ka3,v2);
    _trace_lambda_add_assign(df0[iy][3], v1);
/*     _trace_lambda(der,v1); */
/*     ddd=&df0[iy][3]; */
/*     _add_su3adj(*ddd,der); */
     
    /****************** end of loop ************************/
  }
#ifdef _KOJAK_INST
#pragma pomp inst end(derivSb)
#endif
}
Exemplo n.º 3
0
/* for ieo=0, k resides on  odd sites and l on even sites */
void Hopping_Matrix(int ieo, spinor * const l, spinor * const k){
  int ix,iy;
  int ioff,ioff2,icx,icy;
  su3 * restrict up, * restrict um;
  spinor * restrict r, * restrict sp, * restrict sm;
  spinor temp;

#ifdef _GAUGE_COPY
  if(g_update_gauge_copy) {
    update_backward_gauge();
  }
#endif

  /* for parallelization */
#    if (defined MPI && !(defined _NO_COMM))
  xchange_field(k, ieo);
#    endif

  if(k == l){
    printf("Error in H_psi (simple.c):\n");
    printf("Arguments k and l must be different\n");
    printf("Program aborted\n");
    exit(1);
  }
  if(ieo == 0){
    ioff = 0;
  } 
  else{
    ioff = (VOLUME+RAND)/2;
  } 
  ioff2 = (VOLUME+RAND)/2-ioff;
  /**************** loop over all lattice sites ****************/

  for (icx = ioff; icx < (VOLUME/2 + ioff); icx++){
    ix=g_eo2lexic[icx];

    r=l+(icx-ioff);

    /*********************** direction +0 ************************/
    iy=g_iup[ix][0]; icy=g_lexic2eosub[iy];


    sp=k+icy;
#    if ((defined _GAUGE_COPY))
    up=&g_gauge_field_copy[icx][0];
#    else
    up=&g_gauge_field[ix][0];
#    endif
      
    _vector_add(psi,(*sp).s0,(*sp).s2);

    _su3_multiply(chi,(*up),psi);
    _complex_times_vector(psi,ka0,chi);
      
    _vector_assign(temp.s0,psi);
    _vector_assign(temp.s2,psi);

    _vector_add(psi,(*sp).s1,(*sp).s3);

    _su3_multiply(chi,(*up),psi);
    _complex_times_vector(psi,ka0,chi);
            
    _vector_assign(temp.s1,psi);
    _vector_assign(temp.s3,psi);

    /*********************** direction -0 ************************/

    iy=g_idn[ix][0]; icy=g_lexic2eosub[iy];

    sm=k+icy;
#    if ((defined _GAUGE_COPY))
    um = up+1;
#    else
    um=&g_gauge_field[iy][0];
#    endif

    _vector_sub(psi,(*sm).s0,(*sm).s2);

    _su3_inverse_multiply(chi,(*um),psi);
    _complexcjg_times_vector(psi,ka0,chi);

    _vector_add_assign(temp.s0,psi);
    _vector_sub_assign(temp.s2,psi);

    _vector_sub(psi,(*sm).s1,(*sm).s3);

    _su3_inverse_multiply(chi,(*um),psi);
    _complexcjg_times_vector(psi,ka0,chi);
      
    _vector_add_assign(temp.s1,psi);
    _vector_sub_assign(temp.s3,psi);

    /*********************** direction +1 ************************/

    iy=g_iup[ix][1]; icy=g_lexic2eosub[iy];

    sp=k+icy;

#    if ((defined _GAUGE_COPY))
    up=um+1;
#    else
    up+=1;
#    endif
      
    _vector_i_add(psi,(*sp).s0,(*sp).s3);

    _su3_multiply(chi,(*up),psi);
    _complex_times_vector(psi,ka1,chi);

    _vector_add_assign(temp.s0,psi);
    _vector_i_sub_assign(temp.s3,psi);

    _vector_i_add(psi,(*sp).s1,(*sp).s2);

    _su3_multiply(chi,(*up),psi);
    _complex_times_vector(psi,ka1,chi);

    _vector_add_assign(temp.s1,psi);
    _vector_i_sub_assign(temp.s2,psi);

    /*********************** direction -1 ************************/

    iy=g_idn[ix][1]; icy=g_lexic2eosub[iy];

    sm=k+icy;
#    ifndef _GAUGE_COPY
    um=&g_gauge_field[iy][1];
#    else
    um=up+1;
#    endif

    _vector_i_sub(psi,(*sm).s0,(*sm).s3);

    _su3_inverse_multiply(chi,(*um),psi);
    _complexcjg_times_vector(psi,ka1,chi);

    _vector_add_assign(temp.s0,psi);
    _vector_i_add_assign(temp.s3,psi);

    _vector_i_sub(psi,(*sm).s1,(*sm).s2);

    _su3_inverse_multiply(chi,(*um),psi);
    _complexcjg_times_vector(psi,ka1,chi);

    _vector_add_assign(temp.s1,psi);
    _vector_i_add_assign(temp.s2,psi);

    /*********************** direction +2 ************************/

    iy=g_iup[ix][2]; icy=g_lexic2eosub[iy];

    sp=k+icy;
#    if ((defined _GAUGE_COPY))
    up=um+1;
#    else
    up+=1;
#    endif 
    _vector_add(psi,(*sp).s0,(*sp).s3);

    _su3_multiply(chi,(*up),psi);
    _complex_times_vector(psi,ka2,chi);

    _vector_add_assign(temp.s0,psi);
    _vector_add_assign(temp.s3,psi);

    _vector_sub(psi,(*sp).s1,(*sp).s2);

    _su3_multiply(chi,(*up),psi);
    _complex_times_vector(psi,ka2,chi);
      
    _vector_add_assign(temp.s1,psi);
    _vector_sub_assign(temp.s2,psi);


    /*********************** direction -2 ************************/

    iy=g_idn[ix][2]; icy=g_lexic2eosub[iy];

    sm=k+icy;
#    ifndef _GAUGE_COPY
    um = &g_gauge_field[iy][2];
#    else
    um = up +1;
#    endif

    _vector_sub(psi,(*sm).s0,(*sm).s3);

    _su3_inverse_multiply(chi,(*um),psi);
    _complexcjg_times_vector(psi,ka2,chi);

    _vector_add_assign(temp.s0,psi);
    _vector_sub_assign(temp.s3,psi);

    _vector_add(psi,(*sm).s1,(*sm).s2);

    _su3_inverse_multiply(chi,(*um),psi);
    _complexcjg_times_vector(psi,ka2,chi);
      
    _vector_add_assign(temp.s1,psi);
    _vector_add_assign(temp.s2,psi);

    /*********************** direction +3 ************************/

    iy=g_iup[ix][3]; icy=g_lexic2eosub[iy];

    sp=k+icy;
#    if ((defined _GAUGE_COPY))
    up=um+1;
#    else
    up+=1;
#    endif 
    _vector_i_add(psi,(*sp).s0,(*sp).s2);
      
    _su3_multiply(chi,(*up),psi);
    _complex_times_vector(psi,ka3,chi);

    _vector_add_assign(temp.s0,psi);
    _vector_i_sub_assign(temp.s2,psi);

    _vector_i_sub(psi,(*sp).s1,(*sp).s3);

    _su3_multiply(chi,(*up),psi);
    _complex_times_vector(psi,ka3,chi);

    _vector_add_assign(temp.s1,psi);
    _vector_i_add_assign(temp.s3,psi);

    /*********************** direction -3 ************************/

    iy=g_idn[ix][3]; icy=g_lexic2eosub[iy];

    sm=k+icy;
#    ifndef _GAUGE_COPY
    um = &g_gauge_field[iy][3];
#    else
    um = up+1;
#    endif

    _vector_i_sub(psi,(*sm).s0,(*sm).s2);

    _su3_inverse_multiply(chi,(*um),psi);
    _complexcjg_times_vector(psi,ka3,chi);
      
    _vector_add((*r).s0, temp.s0, psi);
    _vector_i_add((*r).s2, temp.s2, psi);

    _vector_i_add(psi,(*sm).s1,(*sm).s3);

    _su3_inverse_multiply(chi,(*um),psi);
    _complexcjg_times_vector(psi,ka3,chi);

    _vector_add((*r).s1, temp.s1, psi);
    _vector_i_sub((*r).s3, temp.s3, psi);
    /************************ end of loop ************************/
  }
}
Exemplo n.º 4
0
/* for ieo=0, k resides on  odd sites and l on even sites */
void Hopping_Matrix(const int ieo, spinor * const l, spinor * const k){
  int i,ix;
  su3 * restrict U ALIGN;
  spinor * restrict s ALIGN;
  spinor rs;
  static su3_vector psi, chi, psi2, chi2;
  halfspinor * restrict * phi ALIGN;
  halfspinor32 * restrict * phi32 ALIGN;
#ifdef _KOJAK_INST
#pragma pomp inst begin(hoppingmatrix)
#endif
#ifdef XLC
#pragma disjoint(*l, *k, *U, *s)
#endif

#ifdef _GAUGE_COPY
  if(g_update_gauge_copy) {
    update_backward_gauge();
  }
#endif

  if(k == l){
    printf("Error in H_psi (simple.c):\n");
    printf("Arguments k and l must be different\n");
    printf("Program aborted\n");
    exit(1);
  }
  s = k;

  if(ieo == 0) {
    U = g_gauge_field_copy[0][0];
  }
  else {
    U = g_gauge_field_copy[1][0];
  }
  if(g_sloppy_precision == 1 && g_sloppy_precision_flag == 1) {
    phi32 = NBPointer32[ieo];
      
    /**************** loop over all lattice sites ****************/
    ix=0;
    for(i = 0; i < (VOLUME)/2; i++){
      _vector_assign(rs.s0, (*s).s0);
      _vector_assign(rs.s1, (*s).s1);
      _vector_assign(rs.s2, (*s).s2);
      _vector_assign(rs.s3, (*s).s3);
      s++;
      /*********************** direction +0 ************************/
      
      _vector_add(psi, rs.s0, rs.s2);

      _su3_multiply(chi,(*U),psi);
      _complex_times_vector((*phi32[ix]).s0, ka0, chi);
      
      _vector_add(psi, rs.s1, rs.s3);

      _su3_multiply(chi,(*U),psi);
      _complex_times_vector((*phi32[ix]).s1, ka0, chi);
            
      U++;
      ix++;
    
      /*********************** direction -0 ************************/

      _vector_sub((*phi32[ix]).s0, rs.s0, rs.s2);
      _vector_sub((*phi32[ix]).s1, rs.s1, rs.s3);

      ix++;

      /*********************** direction +1 ************************/

      _vector_i_add(psi, rs.s0, rs.s3);

      _su3_multiply(chi, (*U), psi);
      _complex_times_vector((*phi32[ix]).s0, ka1, chi);

      _vector_i_add(psi, rs.s1, rs.s2);

      _su3_multiply(chi, (*U), psi);
      _complex_times_vector((*phi32[ix]).s1, ka1, chi);

      U++;
      ix++;

      /*********************** direction -1 ************************/

      _vector_i_sub((*phi32[ix]).s0, rs.s0, rs.s3);
      _vector_i_sub((*phi32[ix]).s1, rs.s1, rs.s2);

      ix++;
      /*********************** direction +2 ************************/

      _vector_add(psi, rs.s0, rs.s3);

      _su3_multiply(chi,(*U),psi);
      _complex_times_vector((*phi32[ix]).s0, ka2, chi);

      _vector_sub(psi, rs.s1, rs.s2);

      _su3_multiply(chi,(*U),psi);
      _complex_times_vector((*phi32[ix]).s1, ka2, chi);
      
      U++;
      ix++;

      /*********************** direction -2 ************************/

      _vector_sub((*phi32[ix]).s0, rs.s0, rs.s3);
      _vector_add((*phi32[ix]).s1, rs.s1, rs.s2);
      ix++;

      /*********************** direction +3 ************************/

      _vector_i_add(psi, rs.s0, rs.s2);
      
      _su3_multiply(chi, (*U), psi);
      _complex_times_vector((*phi32[ix]).s0, ka3, chi);


      _vector_i_sub(psi, rs.s1, rs.s3);

      _su3_multiply(chi,(*U),psi);
      _complex_times_vector((*phi32[ix]).s1, ka3, chi);

      U++;
      ix++;
      /*********************** direction -3 ************************/

      _vector_i_sub((*phi32[ix]).s0, rs.s0, rs.s2);
      _vector_i_add((*phi32[ix]).s1, rs.s1, rs.s3);

      ix++;
      /************************ end of loop ************************/
    }
#    if (defined MPI && !defined _NO_COMM)
    xchange_halffield32(); 
#    endif
    s = l;
    phi32 = NBPointer32[2 + ieo];
    if(ieo == 0) {
      U = g_gauge_field_copy[1][0];
    }
    else {
      U = g_gauge_field_copy[0][0];
    }

    ix = 0;
    for(i = 0; i < (VOLUME)/2; i++){
      /*********************** direction +0 ************************/
      _vector_assign(rs.s0, (*phi32[ix]).s0);
      _vector_assign(rs.s2, (*phi32[ix]).s0);
      _vector_assign(rs.s1, (*phi32[ix]).s1);
      _vector_assign(rs.s3, (*phi32[ix]).s1);
      ix++;
      /*********************** direction -0 ************************/
      _vector_assign(psi, (*phi32[ix]).s0);
      _su3_inverse_multiply(chi,(*U), psi);
      _complexcjg_times_vector(psi,ka0,chi);

      _vector_add_assign(rs.s0, psi);
      _vector_sub_assign(rs.s2, psi);

      _vector_assign(psi, (*phi32[ix]).s1);
      _su3_inverse_multiply(chi,(*U), psi);
      _complexcjg_times_vector(psi,ka0,chi);
      
      _vector_add_assign(rs.s1, psi);
      _vector_sub_assign(rs.s3, psi);
      ix++;
      U++;
      /*********************** direction +1 ************************/

      _vector_add_assign(rs.s0, (*phi32[ix]).s0);
      _vector_i_sub_assign(rs.s3, (*phi32[ix]).s0);

      _vector_add_assign(rs.s1, (*phi32[ix]).s1);
      _vector_i_sub_assign(rs.s2, (*phi32[ix]).s1);
    
      ix++;
      /*********************** direction -1 ************************/
      _vector_assign(psi, (*phi32[ix]).s0);
      _su3_inverse_multiply(chi,(*U), psi);
      _complexcjg_times_vector(psi,ka1,chi);

      _vector_add_assign(rs.s0, psi);
      _vector_i_add_assign(rs.s3, psi);

      _vector_assign(psi, (*phi32[ix]).s1);
      _su3_inverse_multiply(chi,(*U), psi);
      _complexcjg_times_vector(psi,ka1,chi);

      _vector_add_assign(rs.s1, psi);
      _vector_i_add_assign(rs.s2, psi);

      U++;
      ix++;

      /*********************** direction +2 ************************/

      _vector_add_assign(rs.s0, (*phi32[ix]).s0);
      _vector_add_assign(rs.s3, (*phi32[ix]).s0);

      _vector_add_assign(rs.s1, (*phi32[ix]).s1);
      _vector_sub_assign(rs.s2, (*phi32[ix]).s1);
    
      ix++;
      /*********************** direction -2 ************************/

      _vector_assign(psi, (*phi32[ix]).s0);
      _su3_inverse_multiply(chi,(*U), psi);
      _complexcjg_times_vector(psi,ka2,chi);

      _vector_add_assign(rs.s0, psi);
      _vector_sub_assign(rs.s3, psi);

      _vector_assign(psi, (*phi32[ix]).s1);
      _su3_inverse_multiply(chi, (*U), psi);
      _complexcjg_times_vector(psi,ka2,chi);
      
      _vector_add_assign(rs.s1, psi);
      _vector_add_assign(rs.s2, psi);

      U++;
      ix++;
      /*********************** direction +3 ************************/

      _vector_add_assign(rs.s0, (*phi32[ix]).s0);
      _vector_i_sub_assign(rs.s2, (*phi32[ix]).s0);

      _vector_add_assign(rs.s1, (*phi32[ix]).s1);
      _vector_i_add_assign(rs.s3, (*phi32[ix]).s1);

      ix++;

      /*********************** direction -3 ************************/

      _vector_assign(psi, (*phi32[ix]).s0);
      _su3_inverse_multiply(chi,(*U), psi);
      _complexcjg_times_vector(psi,ka3,chi);
      
      _vector_add((*s).s0, rs.s0, psi);
      _vector_i_add((*s).s2, rs.s2, psi);

      _vector_assign(psi, (*phi32[ix]).s1);
      _su3_inverse_multiply(chi,(*U), psi);
      _complexcjg_times_vector(psi,ka3,chi);

      _vector_add((*s).s1, rs.s1, psi);
      _vector_i_sub((*s).s3, rs.s3, psi);

      U++;
      ix++;
      s++;
    }
  }
  else {
    phi = NBPointer[ieo];
      
    /**************** loop over all lattice sites ****************/
    ix=0;
    /* #pragma ivdep*/
    for(i = 0; i < (VOLUME)/2; i++){
      _vector_assign(rs.s0, (*s).s0);
      _vector_assign(rs.s1, (*s).s1);
      _vector_assign(rs.s2, (*s).s2);
      _vector_assign(rs.s3, (*s).s3);
      s++;
      /*********************** direction +0 ************************/
      
      _vector_add(psi, rs.s0, rs.s2);
      _vector_add(psi2, rs.s1, rs.s3);
      _su3_multiply(chi,(*U),psi);
      _su3_multiply(chi2,(*U),psi2);
      _complex_times_vector((*phi[ix]).s0, ka0, chi);
      _complex_times_vector((*phi[ix]).s1, ka0, chi2);
            
      U++;
      ix++;
    
      /*********************** direction -0 ************************/

      _vector_sub((*phi[ix]).s0, rs.s0, rs.s2);
      _vector_sub((*phi[ix]).s1, rs.s1, rs.s3);

      ix++;

      /*********************** direction +1 ************************/

      _vector_i_add(psi, rs.s0, rs.s3);
      _vector_i_add(psi2, rs.s1, rs.s2);
      _su3_multiply(chi, (*U), psi);
      _su3_multiply(chi2, (*U), psi2);
      _complex_times_vector((*phi[ix]).s0, ka1, chi);
      _complex_times_vector((*phi[ix]).s1, ka1, chi2);

      U++;
      ix++;

      /*********************** direction -1 ************************/

      _vector_i_sub((*phi[ix]).s0, rs.s0, rs.s3);
      _vector_i_sub((*phi[ix]).s1, rs.s1, rs.s2);

      ix++;
      /*********************** direction +2 ************************/

      _vector_add(psi, rs.s0, rs.s3);
      _vector_sub(psi2, rs.s1, rs.s2);
      _su3_multiply(chi,(*U),psi);
      _su3_multiply(chi2,(*U),psi2);
      _complex_times_vector((*phi[ix]).s0, ka2, chi);
      _complex_times_vector((*phi[ix]).s1, ka2, chi2);
      
      U++;
      ix++;

      /*********************** direction -2 ************************/

      _vector_sub((*phi[ix]).s0, rs.s0, rs.s3);
      _vector_add((*phi[ix]).s1, rs.s1, rs.s2);
      ix++;

      /*********************** direction +3 ************************/

      _vector_i_add(psi, rs.s0, rs.s2);
      _vector_i_sub(psi2, rs.s1, rs.s3);      
      _su3_multiply(chi, (*U), psi);
      _su3_multiply(chi2,(*U),psi2);
      _complex_times_vector((*phi[ix]).s0, ka3, chi);
      _complex_times_vector((*phi[ix]).s1, ka3, chi2);

      U++;
      ix++;
      /*********************** direction -3 ************************/

      _vector_i_sub((*phi[ix]).s0, rs.s0, rs.s2);
      _vector_i_add((*phi[ix]).s1, rs.s1, rs.s3);

      ix++;
      /************************ end of loop ************************/
    }
#    if (defined MPI && !defined _NO_COMM)
    xchange_halffield(); 
#    endif
    s = l;
    phi = NBPointer[2 + ieo];
    if(ieo == 0) {
      U = g_gauge_field_copy[1][0];
    }
    else {
      U = g_gauge_field_copy[0][0];
    }

    ix = 0;
    /* #pragma ivdep */
    for(i = 0; i < (VOLUME)/2; i++){
      /*********************** direction +0 ************************/
      _vector_assign(rs.s0, (*phi[ix]).s0);
      _vector_assign(rs.s2, (*phi[ix]).s0);
      _vector_assign(rs.s1, (*phi[ix]).s1);
      _vector_assign(rs.s3, (*phi[ix]).s1);
      ix++;
      /*********************** direction -0 ************************/
      _su3_inverse_multiply(chi,(*U),(*phi[ix]).s0);
      _su3_inverse_multiply(chi2,(*U),(*phi[ix]).s1);
      _complexcjg_times_vector(psi,ka0,chi);
      _complexcjg_times_vector(psi2,ka0,chi2);
      _vector_add_assign(rs.s0, psi);
      _vector_sub_assign(rs.s2, psi);
      _vector_add_assign(rs.s1, psi2);
      _vector_sub_assign(rs.s3, psi2);
      ix++;
      U++;
      /*********************** direction +1 ************************/

      _vector_add_assign(rs.s0, (*phi[ix]).s0);
      _vector_i_sub_assign(rs.s3, (*phi[ix]).s0);

      _vector_add_assign(rs.s1, (*phi[ix]).s1);
      _vector_i_sub_assign(rs.s2, (*phi[ix]).s1);
    
      ix++;
      /*********************** direction -1 ************************/

      _su3_inverse_multiply(chi,(*U), (*phi[ix]).s0);
      _su3_inverse_multiply(chi2, (*U), (*phi[ix]).s1);
      _complexcjg_times_vector(psi,ka1,chi);
      _complexcjg_times_vector(psi2,ka1,chi2);
      _vector_add_assign(rs.s0, psi);
      _vector_i_add_assign(rs.s3, psi);
      _vector_add_assign(rs.s1, psi2);
      _vector_i_add_assign(rs.s2, psi2);

      U++;
      ix++;

      /*********************** direction +2 ************************/

      _vector_add_assign(rs.s0, (*phi[ix]).s0);
      _vector_add_assign(rs.s3, (*phi[ix]).s0);

      _vector_add_assign(rs.s1, (*phi[ix]).s1);
      _vector_sub_assign(rs.s2, (*phi[ix]).s1);
    
      ix++;
      /*********************** direction -2 ************************/

      _su3_inverse_multiply(chi,(*U), (*phi[ix]).s0);
      _su3_inverse_multiply(chi2, (*U), (*phi[ix]).s1);
      _complexcjg_times_vector(psi,ka2,chi);
      _complexcjg_times_vector(psi2,ka2,chi2);
      _vector_add_assign(rs.s0, psi);
      _vector_sub_assign(rs.s3, psi);
      _vector_add_assign(rs.s1, psi2);
      _vector_add_assign(rs.s2, psi2);

      U++;
      ix++;
      /*********************** direction +3 ************************/

      _vector_add_assign(rs.s0, (*phi[ix]).s0);
      _vector_i_sub_assign(rs.s2, (*phi[ix]).s0);

      _vector_add_assign(rs.s1, (*phi[ix]).s1);
      _vector_i_add_assign(rs.s3, (*phi[ix]).s1);

      ix++;

      /*********************** direction -3 ************************/

      _su3_inverse_multiply(chi,(*U), (*phi[ix]).s0);
      _su3_inverse_multiply(chi2, (*U), (*phi[ix]).s1);
      _complexcjg_times_vector(psi,ka3,chi);
      _complexcjg_times_vector(psi2,ka3,chi2);      
      _vector_add((*s).s0, rs.s0, psi);
      _vector_i_add((*s).s2, rs.s2, psi);
      _vector_add((*s).s1, rs.s1, psi2);
      _vector_i_sub((*s).s3, rs.s3, psi2);

      U++;
      ix++;
      s++;
    }
  }
#ifdef _KOJAK_INST
#pragma pomp inst end(hoppingmatrix)
#endif
}