Better initialisation of particles

src/cell.c

@@ -638,11 +638,11 @@ void cell_split(struct cell *c, ptrdiff_t parts_offset) {
  */
 void cell_init_parts(struct cell *c, void *data) {
 
-  struct part *p = c->parts;
-  struct xpart *xp = c->xparts;
-  const int count = c->count;
+  struct part *restrict p = c->parts;
+  struct xpart *restrict xp = c->xparts;
+  const size_t count = c->count;
 
-  for (int i = 0; i < count; ++i) {
+  for (size_t i = 0; i < count; ++i) {
     p[i].ti_begin = 0;
     p[i].ti_end = 0;
     xp[i].v_full[0] = p[i].v[0];
@@ -665,13 +665,14 @@ void cell_init_parts(struct cell *c, void *data) {
  */
 void cell_init_gparts(struct cell *c, void *data) {
 
-  struct gpart *gp = c->gparts;
-  const int gcount = c->gcount;
+  struct gpart *restrict gp = c->gparts;
+  const size_t gcount = c->gcount;
 
-  for (int i = 0; i < gcount; ++i) {
+  for (size_t i = 0; i < gcount; ++i) {
     gp[i].ti_begin = 0;
     gp[i].ti_end = 0;
     gravity_first_init_gpart(&gp[i]);
+    gravity_init_gpart(&gp[i]);
   }
   c->ti_end_min = 0;
   c->ti_end_max = 0;

src/gravity/Default/gravity.h

@@ -82,7 +82,7 @@ __attribute__((always_inline)) INLINE static void gravity_first_init_gpart(
  *
  * @param gp The particle to act upon
  */
-__attribute__((always_inline)) INLINE static void gravity_init_part(
+__attribute__((always_inline)) INLINE static void gravity_init_gpart(
     struct gpart* gp) {
 
   /* Zero the acceleration */

src/runner.c

@@ -408,7 +408,7 @@ void runner_do_init(struct runner *r, struct cell *c, int timer) {
       if (gp->ti_end <= ti_current) {
 
         /* Get ready for a density calculation */
-        gravity_init_part(gp);
+        gravity_init_gpart(gp);
       }
     }
   }