Merged the decimal-branch (revisions 54886 to 58140). Decimal is now
fully updated to the latests Decimal Specification (v1.66) and the
latests test cases (v2.56).
Thanks to Mark Dickinson for all his help during this process.
diff --git a/Lib/test/decimaltestdata/ddCopyNegate.decTest b/Lib/test/decimaltestdata/ddCopyNegate.decTest
new file mode 100644
index 0000000..b111c9b
--- /dev/null
+++ b/Lib/test/decimaltestdata/ddCopyNegate.decTest
@@ -0,0 +1,88 @@
+------------------------------------------------------------------------
+-- ddCopyNegate.decTest -- quiet decDouble copy and negate --
+-- Copyright (c) IBM Corporation, 1981, 2007. All rights reserved. --
+------------------------------------------------------------------------
+-- Please see the document "General Decimal Arithmetic Testcases" --
+-- at http://www2.hursley.ibm.com/decimal for the description of --
+-- these testcases. --
+-- --
+-- These testcases are experimental ('beta' versions), and they --
+-- may contain errors. They are offered on an as-is basis. In --
+-- particular, achieving the same results as the tests here is not --
+-- a guarantee that an implementation complies with any Standard --
+-- or specification. The tests are not exhaustive. --
+-- --
+-- Please send comments, suggestions, and corrections to the author: --
+-- Mike Cowlishaw, IBM Fellow --
+-- IBM UK, PO Box 31, Birmingham Road, Warwick CV34 5JL, UK --
+-- mfc@uk.ibm.com --
+------------------------------------------------------------------------
+version: 2.56
+
+-- All operands and results are decDoubles.
+precision: 16
+maxExponent: 384
+minExponent: -383
+extended: 1
+clamp: 1
+rounding: half_even
+
+-- Sanity check
+ddcpn001 copynegate +7.50 -> -7.50
+
+-- Infinities
+ddcpn011 copynegate Infinity -> -Infinity
+ddcpn012 copynegate -Infinity -> Infinity
+
+-- NaNs, 0 payload
+ddcpn021 copynegate NaN -> -NaN
+ddcpn022 copynegate -NaN -> NaN
+ddcpn023 copynegate sNaN -> -sNaN
+ddcpn024 copynegate -sNaN -> sNaN
+
+-- NaNs, non-0 payload
+ddcpn031 copynegate NaN13 -> -NaN13
+ddcpn032 copynegate -NaN13 -> NaN13
+ddcpn033 copynegate sNaN13 -> -sNaN13
+ddcpn034 copynegate -sNaN13 -> sNaN13
+ddcpn035 copynegate NaN70 -> -NaN70
+ddcpn036 copynegate -NaN70 -> NaN70
+ddcpn037 copynegate sNaN101 -> -sNaN101
+ddcpn038 copynegate -sNaN101 -> sNaN101
+
+-- finites
+ddcpn101 copynegate 7 -> -7
+ddcpn102 copynegate -7 -> 7
+ddcpn103 copynegate 75 -> -75
+ddcpn104 copynegate -75 -> 75
+ddcpn105 copynegate 7.50 -> -7.50
+ddcpn106 copynegate -7.50 -> 7.50
+ddcpn107 copynegate 7.500 -> -7.500
+ddcpn108 copynegate -7.500 -> 7.500
+
+-- zeros
+ddcpn111 copynegate 0 -> -0
+ddcpn112 copynegate -0 -> 0
+ddcpn113 copynegate 0E+4 -> -0E+4
+ddcpn114 copynegate -0E+4 -> 0E+4
+ddcpn115 copynegate 0.0000 -> -0.0000
+ddcpn116 copynegate -0.0000 -> 0.0000
+ddcpn117 copynegate 0E-141 -> -0E-141
+ddcpn118 copynegate -0E-141 -> 0E-141
+
+-- full coefficients, alternating bits
+ddcpn121 copynegate 2682682682682682 -> -2682682682682682
+ddcpn122 copynegate -2682682682682682 -> 2682682682682682
+ddcpn123 copynegate 1341341341341341 -> -1341341341341341
+ddcpn124 copynegate -1341341341341341 -> 1341341341341341
+
+-- Nmax, Nmin, Ntiny
+ddcpn131 copynegate 9.999999999999999E+384 -> -9.999999999999999E+384
+ddcpn132 copynegate 1E-383 -> -1E-383
+ddcpn133 copynegate 1.000000000000000E-383 -> -1.000000000000000E-383
+ddcpn134 copynegate 1E-398 -> -1E-398
+
+ddcpn135 copynegate -1E-398 -> 1E-398
+ddcpn136 copynegate -1.000000000000000E-383 -> 1.000000000000000E-383
+ddcpn137 copynegate -1E-383 -> 1E-383
+ddcpn138 copynegate -9.999999999999999E+384 -> 9.999999999999999E+384