From 13a55a78d4564f84510ae160f9d19efb40236220 Mon Sep 17 00:00:00 2001
From: Paul Eggert
Date: Wed, 13 Apr 2011 19:20:00 -0700
Subject: * scroll.c (scroll_cost): Remove; unused.

* dispextern.h (scroll_cost): Remove decl.
---
 src/scroll.c | 38 --------------------------------------
 1 file changed, 38 deletions(-)

(limited to 'src/scroll.c')

diff --git a/src/scroll.c b/src/scroll.c
index fcec596daa3..ba012874460 100644
--- a/src/scroll.c
+++ b/src/scroll.c
@@ -882,44 +882,6 @@ scrolling_max_lines_saved (int start, int end,
   return matchcount;
 }
 
-/* Return a measure of the cost of moving the lines starting with vpos
-   FROM, up to but not including vpos TO, down by AMOUNT lines (AMOUNT
-   may be negative).  */
-
-int
-scroll_cost (FRAME_PTR frame, int from, int to, int amount)
-{
-  /* Compute how many lines, at bottom of frame,
-     will not be involved in actual motion.  */
-  EMACS_INT limit = to;
-  EMACS_INT offset;
-  EMACS_INT height = FRAME_LINES (frame);
-
-  if (amount == 0)
-    return 0;
-
-  if (! FRAME_SCROLL_REGION_OK (frame))
-    limit = height;
-  else if (amount > 0)
-    limit += amount;
-
-  if (amount < 0)
-    {
-      int temp = to;
-      to = from + amount;
-      from = temp + amount;
-      amount = - amount;
-    }
-
-  offset = height - limit;
-
-  return
-    (FRAME_INSERT_COST (frame)[offset + from]
-     + (amount - 1) * FRAME_INSERTN_COST (frame)[offset + from]
-     + FRAME_DELETE_COST (frame)[offset + to]
-     + (amount - 1) * FRAME_DELETEN_COST (frame)[offset + to]);
-}
-
 /* Calculate the line insertion/deletion
    overhead and multiply factor values */
 
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