Cleanup: use BKE_fcurve_ prefix for keyframing bezier functions

- BKE_bezt_subdivide_handles -> BKE_fcurve_bezt_subdivide_handles
- binarysearch_bezt_index -> BKE_fcurve_bezt_binarysearch_index

These functions are specific to F-Curves and don't make sense for other
uses of BezTriple (curve-object data for e.g.)

Also:

- Move detailed doxygen comment above code, following code-style.
- Mark bezt_add_to_cfra_elem unused.

1 files changed, 2 insertions, 1 deletions

diff --git a/source/blender/editors/render/render_opengl.c b/source/blender/editors/render/render_opengl.c
index ed20d2895fc..8d410e36ca6 100644
--- a/source/blender/editors/render/render_opengl.c
+++ b/source/blender/editors/render/render_opengl.c
@@ -546,7 +546,8 @@ static void gather_frames_to_render_for_adt(const OGLRender *oglrender, const An
     }
 
     bool found = false; /* Not interesting, we just want a starting point for the for-loop.*/
-    int key_index = binarysearch_bezt_index(fcu->bezt, frame_start, fcu->totvert, &found);
+    int key_index = BKE_fcurve_bezt_binarysearch_index(
+        fcu->bezt, frame_start, fcu->totvert, &found);
     for (; key_index < fcu->totvert; key_index++) {
       BezTriple *bezt = &fcu->bezt[key_index];
       /* The frame range to render uses integer frame numbers, and the frame