[libchamplain/wrap: 8/14] Optimize x_to_wrap_x()

[Jiří Techet <jiritechet src gnome org>]

commit a8407f7d9dacbb248e1048841d4f3c5e5fa97a40
Author: Jiří Techet <techet gmail com>
Date:   Sun Apr 13 01:16:46 2014 +0200

    Optimize x_to_wrap_x()

 champlain/champlain-view.c |   14 ++++++--------
 1 files changed, 6 insertions(+), 8 deletions(-)
---
diff --git a/champlain/champlain-view.c b/champlain/champlain-view.c
index 9602fe2..73c46ae 100644
--- a/champlain/champlain-view.c
+++ b/champlain/champlain-view.c
@@ -266,15 +266,13 @@ static ChamplainBoundingBox *get_bounding_box (ChamplainView *view,
     gdouble x,
     gdouble y);
 
-static inline gint
-x_to_wrap_x (gint x, gint width) {
-  while (x < 0)
-    x += width;
-
-  while (x >= width)
-    x -= width;
 
-  return x;
+static gint
+x_to_wrap_x (gint x, gint width) {
+  if (x < 0)
+    x += (-x / width + 1) * width;
+  
+  return x % width;
 }