From 954891913f8b79edac8202adb69c6e850e56cf5a Mon Sep 17 00:00:00 2001
From: Linus Nordberg <linus@nordberg.se>
Date: Wed, 10 Sep 2014 10:18:17 +0200
Subject: Add fun specs.

---
 src/ht.erl | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src')

diff --git a/src/ht.erl b/src/ht.erl
index 749bc9e..a2f64f9 100644
--- a/src/ht.erl
+++ b/src/ht.erl
@@ -101,8 +101,11 @@ add(#history_tree{version = V, store = Store}, Entry) ->
                                      #inner{index = LeafIndex, layer = 0,
                                             hash = LeafHash})}.
 
+-spec tree_hash(history_tree()) -> binary().
 tree_hash(Tree) ->
     tree_hash(Tree, Tree#history_tree.version).
+
+-spec tree_hash(history_tree(), integer()) -> binary().
 tree_hash(_, -1) ->
     hash("");
 tree_hash(Tree, Version) ->
-- 
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