From a73905401aab774ec56425db54706ad1f862e9ad Mon Sep 17 00:00:00 2001
From: kwolekr <mirrorisim@gmail.com>
Date: Wed, 23 Jan 2013 10:13:04 -0500
Subject: [PATCH] Improve random map seed generation

---
 src/map.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/map.cpp b/src/map.cpp
index ea82194b..ab9cb25d 100644
--- a/src/map.cpp
+++ b/src/map.cpp
@@ -2013,10 +2013,10 @@ ServerMap::ServerMap(std::string savedir, IGameDef *gamedef, EmergeManager *emer
 
 	if (g_settings->get("fixed_map_seed").empty())
 	{
-		m_seed = (((u64)(myrand()%0xffff)<<0)
-				+ ((u64)(myrand()%0xffff)<<16)
-				+ ((u64)(myrand()%0xffff)<<32)
-				+ ((u64)(myrand()&0xffff)<<48));
+		m_seed = (((u64)(myrand() & 0xffff) << 0)
+				| ((u64)(myrand() & 0xffff) << 16)
+				| ((u64)(myrand() & 0xffff) << 32)
+				| ((u64)(myrand() & 0xffff) << 48));
 		m_mgparams->seed = m_seed;
 	}