Remove even more whitespace

doc/src/fix_epot_lepton.rst

@@ -42,21 +42,21 @@ Description
 
 .. versionadded:: TBD
 
-Add an electric potential :math:`V` that applies to a group of charged atoms a force :math:`\vec{F} = q \vec{E}`, 
+Add an electric potential :math:`V` that applies to a group of charged atoms a force :math:`\vec{F} = q \vec{E}`,
-and to dipoles a force :math:`\vec{F} = (\vec{p} \cdot \nabla) \vec{E}` and torque :math:`\vec{T} = \vec{p} \times \vec{E}`, 
+and to dipoles a force :math:`\vec{F} = (\vec{p} \cdot \nabla) \vec{E}` and torque :math:`\vec{T} = \vec{p} \times \vec{E}`,
-where :math:`\vec{E} = - \nabla V`. The fix also evaluates the electrostatic energy (:math:`U_{q} = q V` and :math:`U_{p} = - \vec{p} \cdot \vec{E}`) 
+where :math:`\vec{E} = - \nabla V`. The fix also evaluates the electrostatic energy (:math:`U_{q} = q V` and :math:`U_{p} = - \vec{p} \cdot \vec{E}`)
-due to this potential when the :doc:`fix_modify energy yes <fix_modify>` command is specified (see below). 
+due to this potential when the :doc:`fix_modify energy yes <fix_modify>` command is specified (see below).
 
-The `Lepton library <https://simtk.org/projects/lepton>`_, that the *epot/lepton* fix style interfaces with, evaluates 
+The `Lepton library <https://simtk.org/projects/lepton>`_, that the *epot/lepton* fix style interfaces with, evaluates
-the expression string at run time to compute the energy, forces, and torques. It creates an analytical representation 
+the expression string at run time to compute the energy, forces, and torques. It creates an analytical representation
 of :math:`V` and :math:`\vec{E}`, while the gradient force is computed using a central difference scheme
 
 .. math::
-   
+
    \vec{F} = \frac{|\vec{p}|}{2h} \left[ \vec{E}(\vec{x} + h \hat{p}) - \vec{E}(\vec{x} - h \hat{p}) \right] .
 
-The Lepton expression must be either enclosed in quotes or must not contain any whitespace so that LAMMPS 
+The Lepton expression must be either enclosed in quotes or must not contain any whitespace so that LAMMPS
-recognizes it as a single keyword. More on valid Lepton expressions below. The final Lepton expression must 
+recognizes it as a single keyword. More on valid Lepton expressions below. The final Lepton expression must
 be a function of only :math:`x, y, z`, which refer to the current *unwrapped* coordinates of the atoms to ensure continuity. 
 Special care must be taken when using this fix with periodic boundary conditions or box-changing commands.
 
@@ -98,9 +98,9 @@ fix. This allows to set at which level of the :doc:`r-RESPA <run_style>`
 integrator the fix adding its forces. Default is the outermost level.
 
 This fix computes a global scalar and a global 3-vector of forces,
-which can be accessed by various :doc:`output commands <Howto_output>`. 
+which can be accessed by various :doc:`output commands <Howto_output>`.
-The scalar is the potential energy discussed above. 
+The scalar is the potential energy discussed above.
-The vector is the total force added to the group of atoms. 
+The vector is the total force added to the group of atoms.
 The scalar and vector values calculated by this fix are "extensive".
 
 This fix cannot be used with the *start/stop* keywords of
@@ -123,7 +123,7 @@ the iteration count during the minimization.
 Restrictions
 """"""""""""
 
-Fix style *epot/lepton* is part of the LEPTON package. It is only enabled if LAMMPS was built with that package. 
+Fix style *epot/lepton* is part of the LEPTON package. It is only enabled if LAMMPS was built with that package.
 See the :doc:`Build package <Build_package>` page for more info.
 
 

src/LEPTON/fix_epot_lepton.cpp

@@ -76,7 +76,7 @@ FixEpotLepton::FixEpotLepton(LAMMPS *lmp, int narg, char **arg) :
       error->all(FLERR, "Unknown keyword for fix {} command: {}", style, arg[iarg]);
     }
   }
-  
+
   // check validity of Lepton expression
   // remove whitespace and quotes from expression string and then
   // check if the expression can be parsed without error
@@ -277,7 +277,7 @@ void FixEpotLepton::post_force(int vflag)
           // force = (mu dot D) E
           // using central difference method
           h_mu = h / mu_norm;
-          
+
           xf = unwrap[0] + h_mu * mu[i][0];
           yf = unwrap[1] + h_mu * mu[i][1];
           zf = unwrap[2] + h_mu * mu[i][2];
@@ -378,7 +378,7 @@ void FixEpotLepton::post_force(int vflag)
     for (int i = 0; i < nlocal; i++) {
       if (mask[i] & groupbit) {
         if (region && !region->match(x[i][0], x[i][1], x[i][2])) continue;
-        
+
         mu_norm = sqrt(mu[i][0]*mu[i][0] + mu[i][1]*mu[i][1] + mu[i][2]*mu[i][2]);
         if (mu_norm > EPSILON) continue;
 
@@ -403,7 +403,7 @@ void FixEpotLepton::post_force(int vflag)
         // force = (mu dot D) E
         // using central difference method
         h_mu = h / sqrt(mu[i][0]*mu[i][0] + mu[i][1]*mu[i][1] + mu[i][2]*mu[i][2]);
-        
+
         xf = unwrap[0] + h_mu * mu[i][0];
         yf = unwrap[1] + h_mu * mu[i][1];
         zf = unwrap[2] + h_mu * mu[i][2];
@@ -453,7 +453,7 @@ void FixEpotLepton::post_force(int vflag)
     }
   }
 }
-        
+
 /* ---------------------------------------------------------------------- */
 
 void FixEpotLepton::post_force_respa(int vflag, int ilevel, int /*iloop*/)