remove bogus single function and set single_enable = 0

src/USER-SDPD/pair_sdpd_taitwater_isothermal.cpp

@@ -42,6 +42,7 @@ static const double sqrt_2_inv = std::sqrt(0.5);
 PairSDPDTaitwaterIsothermal::PairSDPDTaitwaterIsothermal (LAMMPS *lmp)
 : Pair (lmp) {
   restartinfo = 0;
+  single_enable =0;
 }
 
 /* ---------------------------------------------------------------------- */
@@ -309,12 +310,3 @@ double PairSDPDTaitwaterIsothermal::init_one (int i, int j) {
   return cut[i][j];
 }
 
-/* ---------------------------------------------------------------------- */
-
-double PairSDPDTaitwaterIsothermal::single (int /*i*/, int /*j*/, int /*itype*/,
-                    int /*jtype*/, double /*rsq*/, double /*factor_coul*/,
-                    double /*factor_lj*/, double &fforce) {
-  fforce = 0.0;
-
-  return 0.0;
-}

src/USER-SDPD/pair_sdpd_taitwater_isothermal.h

@@ -36,7 +36,6 @@ class PairSDPDTaitwaterIsothermal : public Pair {
   void settings (int, char **);
   void coeff (int, char **);
   virtual double init_one (int, int);
-  virtual double single (int, int, int, int, double, double, double, double &);
 
  protected:
   double viscosity, temperature;
@@ -44,7 +43,7 @@ class PairSDPDTaitwaterIsothermal : public Pair {
   double **cut;
 
   void allocate ();
-  
+
   unsigned int seed;
 #ifdef USE_ZEST
   std::mt19937_64 generator;

src/USER-SPH/pair_sph_taitwater.cpp

@@ -29,7 +29,7 @@ using namespace LAMMPS_NS;
 PairSPHTaitwater::PairSPHTaitwater(LAMMPS *lmp) : Pair(lmp)
 {
   restartinfo = 0;
-
+  single_enable = 0;
   first = 1;
 }
 
@@ -291,11 +291,3 @@ double PairSPHTaitwater::init_one(int i, int j) {
   return cut[i][j];
 }
 
-/* ---------------------------------------------------------------------- */
-
-double PairSPHTaitwater::single(int /*i*/, int /*j*/, int /*itype*/, int /*jtype*/,
-    double /*rsq*/, double /*factor_coul*/, double /*factor_lj*/, double &fforce) {
-  fforce = 0.0;
-
-  return 0.0;
-}

src/USER-SPH/pair_sph_taitwater.h

@@ -32,7 +32,6 @@ class PairSPHTaitwater : public Pair {
   void settings(int, char **);
   void coeff(int, char **);
   virtual double init_one(int, int);
-  virtual double single(int, int, int, int, double, double, double, double &);
 
  protected:
   double *rho0, *soundspeed, *B;

src/USER-SPH/pair_sph_taitwater_morris.cpp

@@ -30,6 +30,7 @@ PairSPHTaitwaterMorris::PairSPHTaitwaterMorris(LAMMPS *lmp) : Pair(lmp)
 {
   restartinfo = 0;
   first = 1;
+  single_enable = 0;
 }
 
 /* ---------------------------------------------------------------------- */
@@ -287,11 +288,3 @@ double PairSPHTaitwaterMorris::init_one(int i, int j) {
   return cut[i][j];
 }
 
-/* ---------------------------------------------------------------------- */
-
-double PairSPHTaitwaterMorris::single(int /*i*/, int /*j*/, int /*itype*/, int /*jtype*/,
-    double /*rsq*/, double /*factor_coul*/, double /*factor_lj*/, double &fforce) {
-  fforce = 0.0;
-
-  return 0.0;
-}

src/USER-SPH/pair_sph_taitwater_morris.h

@@ -32,7 +32,6 @@ class PairSPHTaitwaterMorris : public Pair {
   void settings(int, char **);
   void coeff(int, char **);
   virtual double init_one(int, int);
-  virtual double single(int, int, int, int, double, double, double, double &);
 
  protected:
   double *rho0, *soundspeed, *B;