Use uint in bit shift, closes #27

CrunchyData · Mar 27, 2020 · f0dc92d · f0dc92d
1 parent 55e2948
commit f0dc92d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/tile.go b/tile.go
@@ -36,7 +36,7 @@ func makeTile(vars map[string]string) (Tile, error) {
 }
 
 func (tile *Tile) Width() float64 {
-	worldTileSize := int(1) << tile.Zoom
+	worldTileSize := int(1) << uint(tile.Zoom)
 	return worldMercWidth / float64(worldTileSize)
 }