whitespace cleanup and comment fixes

include/openmc/physics.h

@@ -72,14 +72,14 @@ void sab_scatter(int i_nuclide, int i_sab, Particle* p);
 //! dependence of cross sections in treating resonance elastic scattering such
 //! as the DBRC and a new, accelerated scheme are also implemented here.
 Direction sample_target_velocity(const Nuclide* nuc, double E, Direction u,
-   Direction v_neut, double xs_eff, double kT, uint64_t* prn_seed);
+  Direction v_neut, double xs_eff, double kT, uint64_t* prn_seed);
 
 //! samples a target velocity based on the free gas scattering formulation, used
 //! by most Monte Carlo codes, in which cross section is assumed to be constant
 //! in energy. Excellent documentation for this method can be found in
 //! FRA-TM-123.
 Direction sample_cxs_target_velocity(double awr, double E, Direction u, double kT,
-		uint64_t* prn_seed);
+  uint64_t* prn_seed);
 
 void sample_fission_neutron(int i_nuclide, const Reaction* rx, double E_in,
   Particle::Bank* site, uint64_t* prn_seed);

src/random_lcg.cpp

@@ -43,7 +43,7 @@ double future_prn(int64_t n, uint64_t prn_seed)
 }
 
 //==============================================================================
-// SET_SEED
+// INIT_SEED
 //==============================================================================
 
 void init_seed(int64_t id, uint64_t* prn_seed, int offset)
@@ -52,7 +52,7 @@ void init_seed(int64_t id, uint64_t* prn_seed, int offset)
 }
 
 //==============================================================================
-// SET_PARTICLE_SEEDS
+// INIT_PARTICLE_SEEDS
 //==============================================================================
 
 void init_particle_seeds(int64_t id, uint64_t* prn_seeds)