Add support for trunc().
diff --git a/Lib/decimal.py b/Lib/decimal.py
index e624a6d..eea9448 100644
--- a/Lib/decimal.py
+++ b/Lib/decimal.py
@@ -1433,6 +1433,8 @@
         else:
             return s*int(self._int[:self._exp] or '0')
 
+    __trunc__ = __int__
+
     def __long__(self):
         """Converts to a long.