Index: source/blender/blenkernel/BKE_scene.h
===================================================================
--- source/blender/blenkernel/BKE_scene.h	(revision 44217)
+++ source/blender/blenkernel/BKE_scene.h	(working copy)
@@ -86,8 +86,8 @@
 /* checks for cycle, returns 1 if it's all OK */
 int scene_check_setscene(struct Main *bmain, struct Scene *sce);
 
-float BKE_curframe(struct Scene *scene);
-float BKE_frame_to_ctime(struct Scene *scene, const float frame);
+double BKE_curframe(struct Scene *scene);
+double BKE_frame_to_ctime(struct Scene *scene, const double frame);
 
 void scene_update_tagged(struct Main *bmain, struct Scene *sce);
 
Index: source/blender/blenkernel/intern/particle.c
===================================================================
--- source/blender/blenkernel/intern/particle.c	(revision 44217)
+++ source/blender/blenkernel/intern/particle.c	(working copy)
@@ -3461,7 +3461,7 @@
 
 	psys->totpart=0;
 	psys->flag = PSYS_ENABLED|PSYS_CURRENT;
-	psys->cfra = BKE_frame_to_ctime(scene, CFRA + 1);
+	psys->cfra = (float)BKE_frame_to_ctime(scene, CFRA + 1);
 
 	DAG_scene_sort(G.main, scene);
 	DAG_id_tag_update(&ob->id, OB_RECALC_DATA);
Index: source/blender/blenkernel/intern/pointcache.c
===================================================================
--- source/blender/blenkernel/intern/pointcache.c	(revision 44217)
+++ source/blender/blenkernel/intern/pointcache.c	(working copy)
@@ -2283,7 +2283,7 @@
 	/* Object *ob; */ /* UNUSED */
 	PointCache *cache;
 	/* float offset; unused for now */
-	float time, nexttime;
+	double time, nexttime;
 
 	/* TODO: this has to be sorted out once bsystem_time gets redone, */
 	/*       now caches can handle interpolating etc. too - jahka */
@@ -2303,8 +2303,7 @@
 	if(timescale) {
 		time= BKE_curframe(scene);
 		nexttime= BKE_frame_to_ctime(scene, CFRA+1);
-		
-		*timescale= MAX2(nexttime - time, 0.0f);
+		*timescale= (float)MAX2(nexttime - time, 0.0);
 	}
 
 	if(startframe && endframe) {
Index: source/blender/blenkernel/intern/scene.c
===================================================================
--- source/blender/blenkernel/intern/scene.c	(revision 44217)
+++ source/blender/blenkernel/intern/scene.c	(working copy)
@@ -915,15 +915,15 @@
 /* This function is needed to cope with fractional frames - including two Blender rendering features
  * mblur (motion blur that renders 'subframes' and blurs them together), and fields rendering. 
  */
-float BKE_curframe(Scene *scene)
+double BKE_curframe(Scene *scene)
 {
 	return BKE_frame_to_ctime(scene, scene->r.cfra);
 }
 
 /* This function is used to obtain arbitrary fractional frames */
-float BKE_frame_to_ctime(Scene *scene, const float frame)
+double BKE_frame_to_ctime(Scene *scene, const double frame)
 {
-	float ctime = frame;
+	double ctime = frame;
 	ctime += scene->r.subframe;
 	ctime *= scene->r.framelen;