Documentation fixes and restored default configuration file.

src/const.h

@@ -36,8 +36,7 @@
 /* Time integration constants. */
 #define const_max_u_change 0.1f
 
-/* Thermal energy per unit mass to use as a constant when using an isothermal
- * EoS */
+/* Thermal energy per unit mass used as a constant for the isothermal EoS */
 #define const_isothermal_internal_energy 20.2615290634f
 
 /* Dimensionality of the problem */
@@ -51,8 +50,8 @@
 //#define HYDRO_GAMMA_2_1
 
 /* Equation of state choice */
-//#define EOS_IDEAL_GAS
-#define EOS_ISOTHERMAL_GAS
+#define EOS_IDEAL_GAS
+//#define EOS_ISOTHERMAL_GAS
 
 /* Kernel function to use */
 #define CUBIC_SPLINE_KERNEL
@@ -74,9 +73,9 @@
 #define const_gravity_eta 0.025f
 
 /* External gravity properties */
-//#define EXTERNAL_POTENTIAL_POINTMASS
+#define EXTERNAL_POTENTIAL_POINTMASS
 //#define EXTERNAL_POTENTIAL_ISOTHERMALPOTENTIAL
-#define EXTERNAL_POTENTIAL_DISK_PATCH
+//#define EXTERNAL_POTENTIAL_DISK_PATCH
 /* Add viscuous force to gas particles to speed-up glass making for disk-patch
  * ICs */
 //#define EXTERNAL_POTENTIAL_DISK_PATCH_ICS

src/gravity/Default/gravity.h

@@ -129,12 +129,13 @@ __attribute__((always_inline)) INLINE static void gravity_end_force(
  *
  * This function only branches towards the potential chosen by the user.
  *
+ * @param time The current time in internal units.
  * @param potential The properties of the external potential.
  * @param phys_const The physical constants in internal units.
  * @param gp The particle to act upon.
  */
 __attribute__((always_inline)) INLINE static void external_gravity(
-    const double time, const struct external_potential* potential,
+								   double time, const struct external_potential* potential,
     const struct phys_const* const phys_const, struct gpart* gp) {
 
 #ifdef EXTERNAL_POTENTIAL_POINTMASS

src/potentials.c

@@ -29,12 +29,13 @@
  * of units.
  *
  * @param parameter_file The parsed parameter file
+ * @param phys_const Physical constants in internal units
  * @param us The current internal system of units
  * @param potential The external potential properties to initialize
  */
 void potential_init(const struct swift_params* parameter_file,
-                    const struct phys_const* const phys_const,
-                    struct UnitSystem* us,
+                    const struct phys_const* phys_const,
+                    const struct UnitSystem* us,
                     struct external_potential* potential) {
 
 #ifdef EXTERNAL_POTENTIAL_POINTMASS

src/potentials.h

@@ -162,9 +162,6 @@ external_gravity_disk_patch_potential(
         G_newton; /* returned acceleraton is multiplied by G later on */
   if (dz < 0) g->a_grav[2] += z_accel / G_newton;
 
-  if (abs(g->id_or_neg_offset) == 1)
-    message(" time= %e, rf= %e, az= %e", time, reduction_factor, g->a_grav[2]);
-
 #ifdef EXTERNAL_POTENTIAL_DISK_PATCH_ICS
   /* TT: add viscous drag */
   g->a_grav[0] -= g->v_full[0] / (2 * t_dyn) / G_newton;
@@ -179,7 +176,8 @@ external_gravity_disk_patch_potential(
 #ifdef EXTERNAL_POTENTIAL_ISOTHERMALPOTENTIAL
 
 /**
- * @brief Computes the time-step due to the acceleration from a point mass
+ * @brief Computes the time-step due to the acceleration from an isothermal
+ * potential.
  *
  * @param potential The #external_potential used in the run.
  * @param phys_const The physical constants in internal units.
@@ -213,9 +211,7 @@ external_gravity_isothermalpotential_timestep(
 }
 
 /**
- * @brief Computes the gravitational acceleration of a particle due to a
- * point
- * mass
+ * @brief Computes the gravitational acceleration from an isothermal potential.
  *
  * Note that the accelerations are multiplied by Newton's G constant
  * later on.
@@ -315,8 +311,8 @@ __attribute__((always_inline)) INLINE static void external_gravity_pointmass(
 
 /* Now, some generic functions, defined in the source file */
 void potential_init(const struct swift_params* parameter_file,
-                    const struct phys_const* const phys_const,
-                    struct UnitSystem* us,
+                    const struct phys_const* phys_const,
+                    const struct UnitSystem* us,
                     struct external_potential* potential);
 
 void potential_print(const struct external_potential* potential);