From: Timo Kokkonen <kaapeli@itanic.dy.fi>
Date: Tue, 12 Jul 2011 16:42:35 +0000 (+0300)
Subject: quadtree: Macros with complex values should be enclosed in parenthesis
X-Git-Url: http://git.itanic.dy.fi/?p=sdl-planets;a=commitdiff_plain;h=153d6c75728777617dffdb92579c27ebac93857d

quadtree: Macros with complex values should be enclosed in parenthesis

This makes macro usage more reliable

Signed-off-by: Timo Kokkonen <kaapeli@itanic.dy.fi>
---

diff --git a/quadtree.c b/quadtree.c
index e35505d..827384a 100644
--- a/quadtree.c
+++ b/quadtree.c
@@ -195,10 +195,10 @@ static void _recalculate_node_area_stats(struct quadtree *node)
 		 * points needs be as wide as its widest child node's
 		 * corners.
 		 */
-#define CHILD_CORNER_SAFE(node, ch_idx, cor_idx, axis)		     \
-		(node)->child[ch_idx] ?				     \
-			(node)->child[ch_idx]->corner[cor_idx].axis : \
-			(node)->pos.axis
+#define CHILD_CORNER_SAFE(node, ch_idx, cor_idx, axis)		\
+	((node)->child[ch_idx] ?				\
+		(node)->child[ch_idx]->corner[cor_idx].axis :	\
+		(node)->pos.axis)
 
 		node->corner[0].x = MIN(CHILD_CORNER_SAFE(node, 0, 0, x),
 					CHILD_CORNER_SAFE(node, 2, 0, x));