Fix a bug. If precision was 1, rounding did not work correctly.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@39268 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/RoundingModel.py

@@ -76,7 +76,7 @@ class RoundingModel(Predicate):
           precision = 1
 
         scale = int(log(precision, 10))
-        if scale > 0:
+        if scale > 0 or (scale==0 and precision>=1):
           value = Decimal(str(value))
           scale = Decimal(str(int(precision))).quantize(value)
           precision = Decimal('1')