Test cases from Cowlishaw, v2.57. All are pased cleanly.
diff --git a/Lib/test/decimaltestdata/ddCopySign.decTest b/Lib/test/decimaltestdata/ddCopySign.decTest
index 7c83416..36b060e 100644
--- a/Lib/test/decimaltestdata/ddCopySign.decTest
+++ b/Lib/test/decimaltestdata/ddCopySign.decTest
@@ -17,7 +17,7 @@
 --   IBM UK, PO Box 31, Birmingham Road, Warwick CV34 5JL, UK         --

 --   mfc@uk.ibm.com                                                   --

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

-version: 2.56

+version: 2.57

 

 -- All operands and results are decDoubles.

 precision:   16