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/dqMaxMag.decTest b/Lib/test/decimaltestdata/dqMaxMag.decTest
new file mode 100644
index 0000000..53eb82c
--- /dev/null
+++ b/Lib/test/decimaltestdata/dqMaxMag.decTest
@@ -0,0 +1,304 @@
+------------------------------------------------------------------------
+-- dqMaxMag.decTest -- decQuad maxnummag --
+-- 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
+
+-- we assume that base comparison is tested in compare.decTest, so
+-- these mainly cover special cases and rounding
+extended: 1
+clamp: 1
+precision: 34
+maxExponent: 6144
+minExponent: -6143
+rounding: half_even
+
+-- sanity checks
+dqmxg001 maxmag -2 -2 -> -2
+dqmxg002 maxmag -2 -1 -> -2
+dqmxg003 maxmag -2 0 -> -2
+dqmxg004 maxmag -2 1 -> -2
+dqmxg005 maxmag -2 2 -> 2
+dqmxg006 maxmag -1 -2 -> -2
+dqmxg007 maxmag -1 -1 -> -1
+dqmxg008 maxmag -1 0 -> -1
+dqmxg009 maxmag -1 1 -> 1
+dqmxg010 maxmag -1 2 -> 2
+dqmxg011 maxmag 0 -2 -> -2
+dqmxg012 maxmag 0 -1 -> -1
+dqmxg013 maxmag 0 0 -> 0
+dqmxg014 maxmag 0 1 -> 1
+dqmxg015 maxmag 0 2 -> 2
+dqmxg016 maxmag 1 -2 -> -2
+dqmxg017 maxmag 1 -1 -> 1
+dqmxg018 maxmag 1 0 -> 1
+dqmxg019 maxmag 1 1 -> 1
+dqmxg020 maxmag 1 2 -> 2
+dqmxg021 maxmag 2 -2 -> 2
+dqmxg022 maxmag 2 -1 -> 2
+dqmxg023 maxmag 2 0 -> 2
+dqmxg025 maxmag 2 1 -> 2
+dqmxg026 maxmag 2 2 -> 2
+
+-- extended zeros
+dqmxg030 maxmag 0 0 -> 0
+dqmxg031 maxmag 0 -0 -> 0
+dqmxg032 maxmag 0 -0.0 -> 0
+dqmxg033 maxmag 0 0.0 -> 0
+dqmxg034 maxmag -0 0 -> 0 -- note: -0 = 0, but 0 chosen
+dqmxg035 maxmag -0 -0 -> -0
+dqmxg036 maxmag -0 -0.0 -> -0.0
+dqmxg037 maxmag -0 0.0 -> 0.0
+dqmxg038 maxmag 0.0 0 -> 0
+dqmxg039 maxmag 0.0 -0 -> 0.0
+dqmxg040 maxmag 0.0 -0.0 -> 0.0
+dqmxg041 maxmag 0.0 0.0 -> 0.0
+dqmxg042 maxmag -0.0 0 -> 0
+dqmxg043 maxmag -0.0 -0 -> -0.0
+dqmxg044 maxmag -0.0 -0.0 -> -0.0
+dqmxg045 maxmag -0.0 0.0 -> 0.0
+
+dqmxg050 maxmag -0E1 0E1 -> 0E+1
+dqmxg051 maxmag -0E2 0E2 -> 0E+2
+dqmxg052 maxmag -0E2 0E1 -> 0E+1
+dqmxg053 maxmag -0E1 0E2 -> 0E+2
+dqmxg054 maxmag 0E1 -0E1 -> 0E+1
+dqmxg055 maxmag 0E2 -0E2 -> 0E+2
+dqmxg056 maxmag 0E2 -0E1 -> 0E+2
+dqmxg057 maxmag 0E1 -0E2 -> 0E+1
+
+dqmxg058 maxmag 0E1 0E1 -> 0E+1
+dqmxg059 maxmag 0E2 0E2 -> 0E+2
+dqmxg060 maxmag 0E2 0E1 -> 0E+2
+dqmxg061 maxmag 0E1 0E2 -> 0E+2
+dqmxg062 maxmag -0E1 -0E1 -> -0E+1
+dqmxg063 maxmag -0E2 -0E2 -> -0E+2
+dqmxg064 maxmag -0E2 -0E1 -> -0E+1
+dqmxg065 maxmag -0E1 -0E2 -> -0E+1
+
+-- Specials
+dqmxg090 maxmag Inf -Inf -> Infinity
+dqmxg091 maxmag Inf -1000 -> Infinity
+dqmxg092 maxmag Inf -1 -> Infinity
+dqmxg093 maxmag Inf -0 -> Infinity
+dqmxg094 maxmag Inf 0 -> Infinity
+dqmxg095 maxmag Inf 1 -> Infinity
+dqmxg096 maxmag Inf 1000 -> Infinity
+dqmxg097 maxmag Inf Inf -> Infinity
+dqmxg098 maxmag -1000 Inf -> Infinity
+dqmxg099 maxmag -Inf Inf -> Infinity
+dqmxg100 maxmag -1 Inf -> Infinity
+dqmxg101 maxmag -0 Inf -> Infinity
+dqmxg102 maxmag 0 Inf -> Infinity
+dqmxg103 maxmag 1 Inf -> Infinity
+dqmxg104 maxmag 1000 Inf -> Infinity
+dqmxg105 maxmag Inf Inf -> Infinity
+
+dqmxg120 maxmag -Inf -Inf -> -Infinity
+dqmxg121 maxmag -Inf -1000 -> -Infinity
+dqmxg122 maxmag -Inf -1 -> -Infinity
+dqmxg123 maxmag -Inf -0 -> -Infinity
+dqmxg124 maxmag -Inf 0 -> -Infinity
+dqmxg125 maxmag -Inf 1 -> -Infinity
+dqmxg126 maxmag -Inf 1000 -> -Infinity
+dqmxg127 maxmag -Inf Inf -> Infinity
+dqmxg128 maxmag -Inf -Inf -> -Infinity
+dqmxg129 maxmag -1000 -Inf -> -Infinity
+dqmxg130 maxmag -1 -Inf -> -Infinity
+dqmxg131 maxmag -0 -Inf -> -Infinity
+dqmxg132 maxmag 0 -Inf -> -Infinity
+dqmxg133 maxmag 1 -Inf -> -Infinity
+dqmxg134 maxmag 1000 -Inf -> -Infinity
+dqmxg135 maxmag Inf -Inf -> Infinity
+
+-- 2004.08.02 754r chooses number over NaN in mixed cases
+dqmxg141 maxmag NaN -Inf -> -Infinity
+dqmxg142 maxmag NaN -1000 -> -1000
+dqmxg143 maxmag NaN -1 -> -1
+dqmxg144 maxmag NaN -0 -> -0
+dqmxg145 maxmag NaN 0 -> 0
+dqmxg146 maxmag NaN 1 -> 1
+dqmxg147 maxmag NaN 1000 -> 1000
+dqmxg148 maxmag NaN Inf -> Infinity
+dqmxg149 maxmag NaN NaN -> NaN
+dqmxg150 maxmag -Inf NaN -> -Infinity
+dqmxg151 maxmag -1000 NaN -> -1000
+dqmxg152 maxmag -1 NaN -> -1
+dqmxg153 maxmag -0 NaN -> -0
+dqmxg154 maxmag 0 NaN -> 0
+dqmxg155 maxmag 1 NaN -> 1
+dqmxg156 maxmag 1000 NaN -> 1000
+dqmxg157 maxmag Inf NaN -> Infinity
+
+dqmxg161 maxmag sNaN -Inf -> NaN Invalid_operation
+dqmxg162 maxmag sNaN -1000 -> NaN Invalid_operation
+dqmxg163 maxmag sNaN -1 -> NaN Invalid_operation
+dqmxg164 maxmag sNaN -0 -> NaN Invalid_operation
+dqmxg165 maxmag sNaN 0 -> NaN Invalid_operation
+dqmxg166 maxmag sNaN 1 -> NaN Invalid_operation
+dqmxg167 maxmag sNaN 1000 -> NaN Invalid_operation
+dqmxg168 maxmag sNaN NaN -> NaN Invalid_operation
+dqmxg169 maxmag sNaN sNaN -> NaN Invalid_operation
+dqmxg170 maxmag NaN sNaN -> NaN Invalid_operation
+dqmxg171 maxmag -Inf sNaN -> NaN Invalid_operation
+dqmxg172 maxmag -1000 sNaN -> NaN Invalid_operation
+dqmxg173 maxmag -1 sNaN -> NaN Invalid_operation
+dqmxg174 maxmag -0 sNaN -> NaN Invalid_operation
+dqmxg175 maxmag 0 sNaN -> NaN Invalid_operation
+dqmxg176 maxmag 1 sNaN -> NaN Invalid_operation
+dqmxg177 maxmag 1000 sNaN -> NaN Invalid_operation
+dqmxg178 maxmag Inf sNaN -> NaN Invalid_operation
+dqmxg179 maxmag NaN sNaN -> NaN Invalid_operation
+
+-- propagating NaNs
+dqmxg181 maxmag NaN9 -Inf -> -Infinity
+dqmxg182 maxmag NaN8 9 -> 9
+dqmxg183 maxmag -NaN7 Inf -> Infinity
+
+dqmxg184 maxmag -NaN1 NaN11 -> -NaN1
+dqmxg185 maxmag NaN2 NaN12 -> NaN2
+dqmxg186 maxmag -NaN13 -NaN7 -> -NaN13
+dqmxg187 maxmag NaN14 -NaN5 -> NaN14
+
+dqmxg188 maxmag -Inf NaN4 -> -Infinity
+dqmxg189 maxmag -9 -NaN3 -> -9
+dqmxg190 maxmag Inf NaN2 -> Infinity
+
+dqmxg191 maxmag sNaN99 -Inf -> NaN99 Invalid_operation
+dqmxg192 maxmag sNaN98 -1 -> NaN98 Invalid_operation
+dqmxg193 maxmag -sNaN97 NaN -> -NaN97 Invalid_operation
+dqmxg194 maxmag sNaN96 sNaN94 -> NaN96 Invalid_operation
+dqmxg195 maxmag NaN95 sNaN93 -> NaN93 Invalid_operation
+dqmxg196 maxmag -Inf sNaN92 -> NaN92 Invalid_operation
+dqmxg197 maxmag 0 sNaN91 -> NaN91 Invalid_operation
+dqmxg198 maxmag Inf -sNaN90 -> -NaN90 Invalid_operation
+dqmxg199 maxmag NaN sNaN89 -> NaN89 Invalid_operation
+
+-- old rounding checks
+dqmxg221 maxmag 12345678000 1 -> 12345678000
+dqmxg222 maxmag 1 12345678000 -> 12345678000
+dqmxg223 maxmag 1234567800 1 -> 1234567800
+dqmxg224 maxmag 1 1234567800 -> 1234567800
+dqmxg225 maxmag 1234567890 1 -> 1234567890
+dqmxg226 maxmag 1 1234567890 -> 1234567890
+dqmxg227 maxmag 1234567891 1 -> 1234567891
+dqmxg228 maxmag 1 1234567891 -> 1234567891
+dqmxg229 maxmag 12345678901 1 -> 12345678901
+dqmxg230 maxmag 1 12345678901 -> 12345678901
+dqmxg231 maxmag 1234567896 1 -> 1234567896
+dqmxg232 maxmag 1 1234567896 -> 1234567896
+dqmxg233 maxmag -1234567891 1 -> -1234567891
+dqmxg234 maxmag 1 -1234567891 -> -1234567891
+dqmxg235 maxmag -12345678901 1 -> -12345678901
+dqmxg236 maxmag 1 -12345678901 -> -12345678901
+dqmxg237 maxmag -1234567896 1 -> -1234567896
+dqmxg238 maxmag 1 -1234567896 -> -1234567896
+
+-- from examples
+dqmxg280 maxmag '3' '2' -> '3'
+dqmxg281 maxmag '-10' '3' -> '-10'
+dqmxg282 maxmag '1.0' '1' -> '1'
+dqmxg283 maxmag '1' '1.0' -> '1'
+dqmxg284 maxmag '7' 'NaN' -> '7'
+
+-- expanded list from min/max 754r purple prose
+-- [explicit tests for exponent ordering]
+dqmxg401 maxmag Inf 1.1 -> Infinity
+dqmxg402 maxmag 1.1 1 -> 1.1
+dqmxg403 maxmag 1 1.0 -> 1
+dqmxg404 maxmag 1.0 0.1 -> 1.0
+dqmxg405 maxmag 0.1 0.10 -> 0.1
+dqmxg406 maxmag 0.10 0.100 -> 0.10
+dqmxg407 maxmag 0.10 0 -> 0.10
+dqmxg408 maxmag 0 0.0 -> 0
+dqmxg409 maxmag 0.0 -0 -> 0.0
+dqmxg410 maxmag 0.0 -0.0 -> 0.0
+dqmxg411 maxmag 0.00 -0.0 -> 0.00
+dqmxg412 maxmag 0.0 -0.00 -> 0.0
+dqmxg413 maxmag 0 -0.0 -> 0
+dqmxg414 maxmag 0 -0 -> 0
+dqmxg415 maxmag -0.0 -0 -> -0.0
+dqmxg416 maxmag -0 -0.100 -> -0.100
+dqmxg417 maxmag -0.100 -0.10 -> -0.100
+dqmxg418 maxmag -0.10 -0.1 -> -0.10
+dqmxg419 maxmag -0.1 -1.0 -> -1.0
+dqmxg420 maxmag -1.0 -1 -> -1.0
+dqmxg421 maxmag -1 -1.1 -> -1.1
+dqmxg423 maxmag -1.1 -Inf -> -Infinity
+-- same with operands reversed
+dqmxg431 maxmag 1.1 Inf -> Infinity
+dqmxg432 maxmag 1 1.1 -> 1.1
+dqmxg433 maxmag 1.0 1 -> 1
+dqmxg434 maxmag 0.1 1.0 -> 1.0
+dqmxg435 maxmag 0.10 0.1 -> 0.1
+dqmxg436 maxmag 0.100 0.10 -> 0.10
+dqmxg437 maxmag 0 0.10 -> 0.10
+dqmxg438 maxmag 0.0 0 -> 0
+dqmxg439 maxmag -0 0.0 -> 0.0
+dqmxg440 maxmag -0.0 0.0 -> 0.0
+dqmxg441 maxmag -0.0 0.00 -> 0.00
+dqmxg442 maxmag -0.00 0.0 -> 0.0
+dqmxg443 maxmag -0.0 0 -> 0
+dqmxg444 maxmag -0 0 -> 0
+dqmxg445 maxmag -0 -0.0 -> -0.0
+dqmxg446 maxmag -0.100 -0 -> -0.100
+dqmxg447 maxmag -0.10 -0.100 -> -0.100
+dqmxg448 maxmag -0.1 -0.10 -> -0.10
+dqmxg449 maxmag -1.0 -0.1 -> -1.0
+dqmxg450 maxmag -1 -1.0 -> -1.0
+dqmxg451 maxmag -1.1 -1 -> -1.1
+dqmxg453 maxmag -Inf -1.1 -> -Infinity
+-- largies
+dqmxg460 maxmag 1000 1E+3 -> 1E+3
+dqmxg461 maxmag 1E+3 1000 -> 1E+3
+dqmxg462 maxmag 1000 -1E+3 -> 1000
+dqmxg463 maxmag 1E+3 -1000 -> 1E+3
+dqmxg464 maxmag -1000 1E+3 -> 1E+3
+dqmxg465 maxmag -1E+3 1000 -> 1000
+dqmxg466 maxmag -1000 -1E+3 -> -1000
+dqmxg467 maxmag -1E+3 -1000 -> -1000
+
+-- subnormals
+dqmxg510 maxmag 1.00E-6143 0 -> 1.00E-6143
+dqmxg511 maxmag 0.1E-6143 0 -> 1E-6144 Subnormal
+dqmxg512 maxmag 0.10E-6143 0 -> 1.0E-6144 Subnormal
+dqmxg513 maxmag 0.100E-6143 0 -> 1.00E-6144 Subnormal
+dqmxg514 maxmag 0.01E-6143 0 -> 1E-6145 Subnormal
+dqmxg515 maxmag 0.999E-6143 0 -> 9.99E-6144 Subnormal
+dqmxg516 maxmag 0.099E-6143 0 -> 9.9E-6145 Subnormal
+dqmxg517 maxmag 0.009E-6143 0 -> 9E-6146 Subnormal
+dqmxg518 maxmag 0.001E-6143 0 -> 1E-6146 Subnormal
+dqmxg519 maxmag 0.0009E-6143 0 -> 9E-6147 Subnormal
+dqmxg520 maxmag 0.0001E-6143 0 -> 1E-6147 Subnormal
+
+dqmxg530 maxmag -1.00E-6143 0 -> -1.00E-6143
+dqmxg531 maxmag -0.1E-6143 0 -> -1E-6144 Subnormal
+dqmxg532 maxmag -0.10E-6143 0 -> -1.0E-6144 Subnormal
+dqmxg533 maxmag -0.100E-6143 0 -> -1.00E-6144 Subnormal
+dqmxg534 maxmag -0.01E-6143 0 -> -1E-6145 Subnormal
+dqmxg535 maxmag -0.999E-6143 0 -> -9.99E-6144 Subnormal
+dqmxg536 maxmag -0.099E-6143 0 -> -9.9E-6145 Subnormal
+dqmxg537 maxmag -0.009E-6143 0 -> -9E-6146 Subnormal
+dqmxg538 maxmag -0.001E-6143 0 -> -1E-6146 Subnormal
+dqmxg539 maxmag -0.0009E-6143 0 -> -9E-6147 Subnormal
+dqmxg540 maxmag -0.0001E-6143 0 -> -1E-6147 Subnormal
+
+-- Null tests
+dqmxg900 maxmag 10 # -> NaN Invalid_operation
+dqmxg901 maxmag # 10 -> NaN Invalid_operation
+