From 5491848ee9e08ac91937520e847d993cea6e9550 Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Fri, 2 Aug 2019 22:07:52 +0200
Subject: [PATCH] fixed emeraldval computation in binary4 / sol

---
 binary-tiling.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/binary-tiling.cpp b/binary-tiling.cpp
index 2be97f11..58862775 100644
--- a/binary-tiling.cpp
+++ b/binary-tiling.cpp
@@ -123,7 +123,7 @@ namespace binary {
       if(d < 2)
         h->emeraldval = (parent->emeraldval * 2 + d) % 15015;
       else
-        h->emeraldval = ((parent->emeraldval - d1) * 7508) % 15015;
+        h->emeraldval = ((parent->emeraldval - d1) * 7508 + 15015) % 15015;
       }
     if(WDIM == 3 && h->c7) make_binary_lands(parent, h);
     #if DEBUG_BINARY_TILING