gdk/fallback-c89.c: Add fallback for round()

This is essentially done by simply copying from gtk/fallback-c89.c

https://bugzilla.gnome.org/show_bug.cgi?id=694339

diff --git a/gdk/fallback-c89.c b/gdk/fallback-c89.c
index b150044bd309f85ca7df673e12e6936b75275c72..4baf797f3c2eceeaddb2da8c773b1efcd7bd05c0 100644 (file)
--- a/gdk/fallback-c89.c
+++ b/gdk/fallback-c89.c
@@ -42,3 +42,15 @@ isinf (double x)
   return (!_finite (x) && !_isnan (x));
 }
 #endif
+
+/* Workaround for round() for non-GCC/non-C99 compilers */
+#ifndef HAVE_ROUND
+static inline double
+round (double x)
+{
+  if (x >= 0)
+    return floor (x + 0.5);
+  else
+    return ceil (x - 0.5);
+}
+#endif