Test cases from Cowlishaw, v2.57. All are pased cleanly.
diff --git a/Lib/test/decimaltestdata/ddEncode.decTest b/Lib/test/decimaltestdata/ddEncode.decTest
index 16264fc..3fa434c 100644
--- a/Lib/test/decimaltestdata/ddEncode.decTest
+++ b/Lib/test/decimaltestdata/ddEncode.decTest
@@ -18,7 +18,7 @@
 --   mfc@uk.ibm.com                                                   --

 ------------------------------------------------------------------------

 -- [Previously called decimal64.decTest]

-version: 2.56

+version: 2.57

 

 -- This set of tests is for the eight-byte concrete representation.

 -- Its characteristics are:

@@ -485,3 +485,6 @@
 decd829 apply  #2238000115afb55b ->  4294967295

 decd830 apply  #2238000115afb57a ->  4294967296

 decd831 apply  #2238000115afb57b ->  4294967297

+

+-- for narrowing

+decd840 apply  #2870000000000000 ->  2.000000000000000E-99