--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/python-2.5.2/win32/Lib/test/decimaltestdata/ddSubtract.decTest Fri Apr 03 17:19:34 2009 +0100
@@ -0,0 +1,629 @@
+------------------------------------------------------------------------
+-- ddSubtract.decTest -- decDouble subtraction --
+-- 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: 2.57
+
+-- This set of tests are for decDoubles only; all arguments are
+-- representable in a decDouble
+precision: 16
+maxExponent: 384
+minExponent: -383
+extended: 1
+clamp: 1
+rounding: half_even
+
+-- [first group are 'quick confidence check']
+ddsub001 subtract 0 0 -> '0'
+ddsub002 subtract 1 1 -> '0'
+ddsub003 subtract 1 2 -> '-1'
+ddsub004 subtract 2 1 -> '1'
+ddsub005 subtract 2 2 -> '0'
+ddsub006 subtract 3 2 -> '1'
+ddsub007 subtract 2 3 -> '-1'
+
+ddsub011 subtract -0 0 -> '-0'
+ddsub012 subtract -1 1 -> '-2'
+ddsub013 subtract -1 2 -> '-3'
+ddsub014 subtract -2 1 -> '-3'
+ddsub015 subtract -2 2 -> '-4'
+ddsub016 subtract -3 2 -> '-5'
+ddsub017 subtract -2 3 -> '-5'
+
+ddsub021 subtract 0 -0 -> '0'
+ddsub022 subtract 1 -1 -> '2'
+ddsub023 subtract 1 -2 -> '3'
+ddsub024 subtract 2 -1 -> '3'
+ddsub025 subtract 2 -2 -> '4'
+ddsub026 subtract 3 -2 -> '5'
+ddsub027 subtract 2 -3 -> '5'
+
+ddsub030 subtract 11 1 -> 10
+ddsub031 subtract 10 1 -> 9
+ddsub032 subtract 9 1 -> 8
+ddsub033 subtract 1 1 -> 0
+ddsub034 subtract 0 1 -> -1
+ddsub035 subtract -1 1 -> -2
+ddsub036 subtract -9 1 -> -10
+ddsub037 subtract -10 1 -> -11
+ddsub038 subtract -11 1 -> -12
+
+ddsub040 subtract '5.75' '3.3' -> '2.45'
+ddsub041 subtract '5' '-3' -> '8'
+ddsub042 subtract '-5' '-3' -> '-2'
+ddsub043 subtract '-7' '2.5' -> '-9.5'
+ddsub044 subtract '0.7' '0.3' -> '0.4'
+ddsub045 subtract '1.3' '0.3' -> '1.0'
+ddsub046 subtract '1.25' '1.25' -> '0.00'
+
+ddsub050 subtract '1.23456789' '1.00000000' -> '0.23456789'
+ddsub051 subtract '1.23456789' '1.00000089' -> '0.23456700'
+
+ddsub060 subtract '70' '10000e+16' -> '-1.000000000000000E+20' Inexact Rounded
+ddsub061 subtract '700' '10000e+16' -> '-1.000000000000000E+20' Inexact Rounded
+ddsub062 subtract '7000' '10000e+16' -> '-9.999999999999999E+19' Inexact Rounded
+ddsub063 subtract '70000' '10000e+16' -> '-9.999999999999993E+19' Rounded
+ddsub064 subtract '700000' '10000e+16' -> '-9.999999999999930E+19' Rounded
+ -- symmetry:
+ddsub065 subtract '10000e+16' '70' -> '1.000000000000000E+20' Inexact Rounded
+ddsub066 subtract '10000e+16' '700' -> '1.000000000000000E+20' Inexact Rounded
+ddsub067 subtract '10000e+16' '7000' -> '9.999999999999999E+19' Inexact Rounded
+ddsub068 subtract '10000e+16' '70000' -> '9.999999999999993E+19' Rounded
+ddsub069 subtract '10000e+16' '700000' -> '9.999999999999930E+19' Rounded
+
+ -- some of the next group are really constructor tests
+ddsub090 subtract '00.0' '0.0' -> '0.0'
+ddsub091 subtract '00.0' '0.00' -> '0.00'
+ddsub092 subtract '0.00' '00.0' -> '0.00'
+ddsub093 subtract '00.0' '0.00' -> '0.00'
+ddsub094 subtract '0.00' '00.0' -> '0.00'
+ddsub095 subtract '3' '.3' -> '2.7'
+ddsub096 subtract '3.' '.3' -> '2.7'
+ddsub097 subtract '3.0' '.3' -> '2.7'
+ddsub098 subtract '3.00' '.3' -> '2.70'
+ddsub099 subtract '3' '3' -> '0'
+ddsub100 subtract '3' '+3' -> '0'
+ddsub101 subtract '3' '-3' -> '6'
+ddsub102 subtract '3' '0.3' -> '2.7'
+ddsub103 subtract '3.' '0.3' -> '2.7'
+ddsub104 subtract '3.0' '0.3' -> '2.7'
+ddsub105 subtract '3.00' '0.3' -> '2.70'
+ddsub106 subtract '3' '3.0' -> '0.0'
+ddsub107 subtract '3' '+3.0' -> '0.0'
+ddsub108 subtract '3' '-3.0' -> '6.0'
+
+-- the above all from add; massaged and extended. Now some new ones...
+-- [particularly important for comparisons]
+-- NB: -xE-8 below were non-exponents pre-ANSI X3-274, and -1E-7 or 0E-7
+-- with input rounding.
+ddsub120 subtract '10.23456784' '10.23456789' -> '-5E-8'
+ddsub121 subtract '10.23456785' '10.23456789' -> '-4E-8'
+ddsub122 subtract '10.23456786' '10.23456789' -> '-3E-8'
+ddsub123 subtract '10.23456787' '10.23456789' -> '-2E-8'
+ddsub124 subtract '10.23456788' '10.23456789' -> '-1E-8'
+ddsub125 subtract '10.23456789' '10.23456789' -> '0E-8'
+ddsub126 subtract '10.23456790' '10.23456789' -> '1E-8'
+ddsub127 subtract '10.23456791' '10.23456789' -> '2E-8'
+ddsub128 subtract '10.23456792' '10.23456789' -> '3E-8'
+ddsub129 subtract '10.23456793' '10.23456789' -> '4E-8'
+ddsub130 subtract '10.23456794' '10.23456789' -> '5E-8'
+ddsub131 subtract '10.23456781' '10.23456786' -> '-5E-8'
+ddsub132 subtract '10.23456782' '10.23456786' -> '-4E-8'
+ddsub133 subtract '10.23456783' '10.23456786' -> '-3E-8'
+ddsub134 subtract '10.23456784' '10.23456786' -> '-2E-8'
+ddsub135 subtract '10.23456785' '10.23456786' -> '-1E-8'
+ddsub136 subtract '10.23456786' '10.23456786' -> '0E-8'
+ddsub137 subtract '10.23456787' '10.23456786' -> '1E-8'
+ddsub138 subtract '10.23456788' '10.23456786' -> '2E-8'
+ddsub139 subtract '10.23456789' '10.23456786' -> '3E-8'
+ddsub140 subtract '10.23456790' '10.23456786' -> '4E-8'
+ddsub141 subtract '10.23456791' '10.23456786' -> '5E-8'
+ddsub142 subtract '1' '0.999999999' -> '1E-9'
+ddsub143 subtract '0.999999999' '1' -> '-1E-9'
+ddsub144 subtract '-10.23456780' '-10.23456786' -> '6E-8'
+ddsub145 subtract '-10.23456790' '-10.23456786' -> '-4E-8'
+ddsub146 subtract '-10.23456791' '-10.23456786' -> '-5E-8'
+
+-- additional scaled arithmetic tests [0.97 problem]
+ddsub160 subtract '0' '.1' -> '-0.1'
+ddsub161 subtract '00' '.97983' -> '-0.97983'
+ddsub162 subtract '0' '.9' -> '-0.9'
+ddsub163 subtract '0' '0.102' -> '-0.102'
+ddsub164 subtract '0' '.4' -> '-0.4'
+ddsub165 subtract '0' '.307' -> '-0.307'
+ddsub166 subtract '0' '.43822' -> '-0.43822'
+ddsub167 subtract '0' '.911' -> '-0.911'
+ddsub168 subtract '.0' '.02' -> '-0.02'
+ddsub169 subtract '00' '.392' -> '-0.392'
+ddsub170 subtract '0' '.26' -> '-0.26'
+ddsub171 subtract '0' '0.51' -> '-0.51'
+ddsub172 subtract '0' '.2234' -> '-0.2234'
+ddsub173 subtract '0' '.2' -> '-0.2'
+ddsub174 subtract '.0' '.0008' -> '-0.0008'
+-- 0. on left
+ddsub180 subtract '0.0' '-.1' -> '0.1'
+ddsub181 subtract '0.00' '-.97983' -> '0.97983'
+ddsub182 subtract '0.0' '-.9' -> '0.9'
+ddsub183 subtract '0.0' '-0.102' -> '0.102'
+ddsub184 subtract '0.0' '-.4' -> '0.4'
+ddsub185 subtract '0.0' '-.307' -> '0.307'
+ddsub186 subtract '0.0' '-.43822' -> '0.43822'
+ddsub187 subtract '0.0' '-.911' -> '0.911'
+ddsub188 subtract '0.0' '-.02' -> '0.02'
+ddsub189 subtract '0.00' '-.392' -> '0.392'
+ddsub190 subtract '0.0' '-.26' -> '0.26'
+ddsub191 subtract '0.0' '-0.51' -> '0.51'
+ddsub192 subtract '0.0' '-.2234' -> '0.2234'
+ddsub193 subtract '0.0' '-.2' -> '0.2'
+ddsub194 subtract '0.0' '-.0008' -> '0.0008'
+-- negatives of same
+ddsub200 subtract '0' '-.1' -> '0.1'
+ddsub201 subtract '00' '-.97983' -> '0.97983'
+ddsub202 subtract '0' '-.9' -> '0.9'
+ddsub203 subtract '0' '-0.102' -> '0.102'
+ddsub204 subtract '0' '-.4' -> '0.4'
+ddsub205 subtract '0' '-.307' -> '0.307'
+ddsub206 subtract '0' '-.43822' -> '0.43822'
+ddsub207 subtract '0' '-.911' -> '0.911'
+ddsub208 subtract '.0' '-.02' -> '0.02'
+ddsub209 subtract '00' '-.392' -> '0.392'
+ddsub210 subtract '0' '-.26' -> '0.26'
+ddsub211 subtract '0' '-0.51' -> '0.51'
+ddsub212 subtract '0' '-.2234' -> '0.2234'
+ddsub213 subtract '0' '-.2' -> '0.2'
+ddsub214 subtract '.0' '-.0008' -> '0.0008'
+
+-- more fixed, LHS swaps [really the same as testcases under add]
+ddsub220 subtract '-56267E-12' 0 -> '-5.6267E-8'
+ddsub221 subtract '-56267E-11' 0 -> '-5.6267E-7'
+ddsub222 subtract '-56267E-10' 0 -> '-0.0000056267'
+ddsub223 subtract '-56267E-9' 0 -> '-0.000056267'
+ddsub224 subtract '-56267E-8' 0 -> '-0.00056267'
+ddsub225 subtract '-56267E-7' 0 -> '-0.0056267'
+ddsub226 subtract '-56267E-6' 0 -> '-0.056267'
+ddsub227 subtract '-56267E-5' 0 -> '-0.56267'
+ddsub228 subtract '-56267E-2' 0 -> '-562.67'
+ddsub229 subtract '-56267E-1' 0 -> '-5626.7'
+ddsub230 subtract '-56267E-0' 0 -> '-56267'
+-- symmetry ...
+ddsub240 subtract 0 '-56267E-12' -> '5.6267E-8'
+ddsub241 subtract 0 '-56267E-11' -> '5.6267E-7'
+ddsub242 subtract 0 '-56267E-10' -> '0.0000056267'
+ddsub243 subtract 0 '-56267E-9' -> '0.000056267'
+ddsub244 subtract 0 '-56267E-8' -> '0.00056267'
+ddsub245 subtract 0 '-56267E-7' -> '0.0056267'
+ddsub246 subtract 0 '-56267E-6' -> '0.056267'
+ddsub247 subtract 0 '-56267E-5' -> '0.56267'
+ddsub248 subtract 0 '-56267E-2' -> '562.67'
+ddsub249 subtract 0 '-56267E-1' -> '5626.7'
+ddsub250 subtract 0 '-56267E-0' -> '56267'
+
+-- now some more from the 'new' add
+ddsub301 subtract '1.23456789' '1.00000000' -> '0.23456789'
+ddsub302 subtract '1.23456789' '1.00000011' -> '0.23456778'
+
+-- some carrying effects
+ddsub321 subtract '0.9998' '0.0000' -> '0.9998'
+ddsub322 subtract '0.9998' '0.0001' -> '0.9997'
+ddsub323 subtract '0.9998' '0.0002' -> '0.9996'
+ddsub324 subtract '0.9998' '0.0003' -> '0.9995'
+ddsub325 subtract '0.9998' '-0.0000' -> '0.9998'
+ddsub326 subtract '0.9998' '-0.0001' -> '0.9999'
+ddsub327 subtract '0.9998' '-0.0002' -> '1.0000'
+ddsub328 subtract '0.9998' '-0.0003' -> '1.0001'
+
+-- internal boundaries
+ddsub346 subtract '10000e+9' '7' -> '9999999999993'
+ddsub347 subtract '10000e+9' '70' -> '9999999999930'
+ddsub348 subtract '10000e+9' '700' -> '9999999999300'
+ddsub349 subtract '10000e+9' '7000' -> '9999999993000'
+ddsub350 subtract '10000e+9' '70000' -> '9999999930000'
+ddsub351 subtract '10000e+9' '700000' -> '9999999300000'
+ddsub352 subtract '7' '10000e+9' -> '-9999999999993'
+ddsub353 subtract '70' '10000e+9' -> '-9999999999930'
+ddsub354 subtract '700' '10000e+9' -> '-9999999999300'
+ddsub355 subtract '7000' '10000e+9' -> '-9999999993000'
+ddsub356 subtract '70000' '10000e+9' -> '-9999999930000'
+ddsub357 subtract '700000' '10000e+9' -> '-9999999300000'
+
+-- zero preservation
+ddsub361 subtract 1 '0.0001' -> '0.9999'
+ddsub362 subtract 1 '0.00001' -> '0.99999'
+ddsub363 subtract 1 '0.000001' -> '0.999999'
+ddsub364 subtract 1 '0.0000000000000001' -> '0.9999999999999999'
+ddsub365 subtract 1 '0.00000000000000001' -> '1.000000000000000' Inexact Rounded
+ddsub366 subtract 1 '0.000000000000000001' -> '1.000000000000000' Inexact Rounded
+
+-- some funny zeros [in case of bad signum]
+ddsub370 subtract 1 0 -> 1
+ddsub371 subtract 1 0. -> 1
+ddsub372 subtract 1 .0 -> 1.0
+ddsub373 subtract 1 0.0 -> 1.0
+ddsub374 subtract 0 1 -> -1
+ddsub375 subtract 0. 1 -> -1
+ddsub376 subtract .0 1 -> -1.0
+ddsub377 subtract 0.0 1 -> -1.0
+
+-- leading 0 digit before round
+ddsub910 subtract -103519362 -51897955.3 -> -51621406.7
+ddsub911 subtract 159579.444 89827.5229 -> 69751.9211
+
+ddsub920 subtract 333.0000000123456 33.00000001234566 -> 299.9999999999999 Inexact Rounded
+ddsub921 subtract 333.0000000123456 33.00000001234565 -> 300.0000000000000 Inexact Rounded
+ddsub922 subtract 133.0000000123456 33.00000001234565 -> 99.99999999999995
+ddsub923 subtract 133.0000000123456 33.00000001234564 -> 99.99999999999996
+ddsub924 subtract 133.0000000123456 33.00000001234540 -> 100.0000000000002 Rounded
+ddsub925 subtract 133.0000000123456 43.00000001234560 -> 90.00000000000000
+ddsub926 subtract 133.0000000123456 43.00000001234561 -> 89.99999999999999
+ddsub927 subtract 133.0000000123456 43.00000001234566 -> 89.99999999999994
+ddsub928 subtract 101.0000000123456 91.00000001234566 -> 9.99999999999994
+ddsub929 subtract 101.0000000123456 99.00000001234566 -> 1.99999999999994
+
+-- more LHS swaps [were fixed]
+ddsub390 subtract '-56267E-10' 0 -> '-0.0000056267'
+ddsub391 subtract '-56267E-6' 0 -> '-0.056267'
+ddsub392 subtract '-56267E-5' 0 -> '-0.56267'
+ddsub393 subtract '-56267E-4' 0 -> '-5.6267'
+ddsub394 subtract '-56267E-3' 0 -> '-56.267'
+ddsub395 subtract '-56267E-2' 0 -> '-562.67'
+ddsub396 subtract '-56267E-1' 0 -> '-5626.7'
+ddsub397 subtract '-56267E-0' 0 -> '-56267'
+ddsub398 subtract '-5E-10' 0 -> '-5E-10'
+ddsub399 subtract '-5E-7' 0 -> '-5E-7'
+ddsub400 subtract '-5E-6' 0 -> '-0.000005'
+ddsub401 subtract '-5E-5' 0 -> '-0.00005'
+ddsub402 subtract '-5E-4' 0 -> '-0.0005'
+ddsub403 subtract '-5E-1' 0 -> '-0.5'
+ddsub404 subtract '-5E0' 0 -> '-5'
+ddsub405 subtract '-5E1' 0 -> '-50'
+ddsub406 subtract '-5E5' 0 -> '-500000'
+ddsub407 subtract '-5E15' 0 -> '-5000000000000000'
+ddsub408 subtract '-5E16' 0 -> '-5.000000000000000E+16' Rounded
+ddsub409 subtract '-5E17' 0 -> '-5.000000000000000E+17' Rounded
+ddsub410 subtract '-5E18' 0 -> '-5.000000000000000E+18' Rounded
+ddsub411 subtract '-5E100' 0 -> '-5.000000000000000E+100' Rounded
+
+-- more RHS swaps [were fixed]
+ddsub420 subtract 0 '-56267E-10' -> '0.0000056267'
+ddsub421 subtract 0 '-56267E-6' -> '0.056267'
+ddsub422 subtract 0 '-56267E-5' -> '0.56267'
+ddsub423 subtract 0 '-56267E-4' -> '5.6267'
+ddsub424 subtract 0 '-56267E-3' -> '56.267'
+ddsub425 subtract 0 '-56267E-2' -> '562.67'
+ddsub426 subtract 0 '-56267E-1' -> '5626.7'
+ddsub427 subtract 0 '-56267E-0' -> '56267'
+ddsub428 subtract 0 '-5E-10' -> '5E-10'
+ddsub429 subtract 0 '-5E-7' -> '5E-7'
+ddsub430 subtract 0 '-5E-6' -> '0.000005'
+ddsub431 subtract 0 '-5E-5' -> '0.00005'
+ddsub432 subtract 0 '-5E-4' -> '0.0005'
+ddsub433 subtract 0 '-5E-1' -> '0.5'
+ddsub434 subtract 0 '-5E0' -> '5'
+ddsub435 subtract 0 '-5E1' -> '50'
+ddsub436 subtract 0 '-5E5' -> '500000'
+ddsub437 subtract 0 '-5E15' -> '5000000000000000'
+ddsub438 subtract 0 '-5E16' -> '5.000000000000000E+16' Rounded
+ddsub439 subtract 0 '-5E17' -> '5.000000000000000E+17' Rounded
+ddsub440 subtract 0 '-5E18' -> '5.000000000000000E+18' Rounded
+ddsub441 subtract 0 '-5E100' -> '5.000000000000000E+100' Rounded
+
+
+-- try borderline precision, with carries, etc.
+ddsub461 subtract '1E+16' '1' -> '9999999999999999'
+ddsub462 subtract '1E+12' '-1.111' -> '1000000000001.111'
+ddsub463 subtract '1.111' '-1E+12' -> '1000000000001.111'
+ddsub464 subtract '-1' '-1E+16' -> '9999999999999999'
+ddsub465 subtract '7E+15' '1' -> '6999999999999999'
+ddsub466 subtract '7E+12' '-1.111' -> '7000000000001.111'
+ddsub467 subtract '1.111' '-7E+12' -> '7000000000001.111'
+ddsub468 subtract '-1' '-7E+15' -> '6999999999999999'
+
+-- 1234567890123456 1234567890123456 1 23456789012345
+ddsub470 subtract '0.4444444444444444' '-0.5555555555555563' -> '1.000000000000001' Inexact Rounded
+ddsub471 subtract '0.4444444444444444' '-0.5555555555555562' -> '1.000000000000001' Inexact Rounded
+ddsub472 subtract '0.4444444444444444' '-0.5555555555555561' -> '1.000000000000000' Inexact Rounded
+ddsub473 subtract '0.4444444444444444' '-0.5555555555555560' -> '1.000000000000000' Inexact Rounded
+ddsub474 subtract '0.4444444444444444' '-0.5555555555555559' -> '1.000000000000000' Inexact Rounded
+ddsub475 subtract '0.4444444444444444' '-0.5555555555555558' -> '1.000000000000000' Inexact Rounded
+ddsub476 subtract '0.4444444444444444' '-0.5555555555555557' -> '1.000000000000000' Inexact Rounded
+ddsub477 subtract '0.4444444444444444' '-0.5555555555555556' -> '1.000000000000000' Rounded
+ddsub478 subtract '0.4444444444444444' '-0.5555555555555555' -> '0.9999999999999999'
+ddsub479 subtract '0.4444444444444444' '-0.5555555555555554' -> '0.9999999999999998'
+ddsub480 subtract '0.4444444444444444' '-0.5555555555555553' -> '0.9999999999999997'
+ddsub481 subtract '0.4444444444444444' '-0.5555555555555552' -> '0.9999999999999996'
+ddsub482 subtract '0.4444444444444444' '-0.5555555555555551' -> '0.9999999999999995'
+ddsub483 subtract '0.4444444444444444' '-0.5555555555555550' -> '0.9999999999999994'
+
+-- and some more, including residue effects and different roundings
+rounding: half_up
+ddsub500 subtract '1231234567456789' 0 -> '1231234567456789'
+ddsub501 subtract '1231234567456789' 0.000000001 -> '1231234567456789' Inexact Rounded
+ddsub502 subtract '1231234567456789' 0.000001 -> '1231234567456789' Inexact Rounded
+ddsub503 subtract '1231234567456789' 0.1 -> '1231234567456789' Inexact Rounded
+ddsub504 subtract '1231234567456789' 0.4 -> '1231234567456789' Inexact Rounded
+ddsub505 subtract '1231234567456789' 0.49 -> '1231234567456789' Inexact Rounded
+ddsub506 subtract '1231234567456789' 0.499999 -> '1231234567456789' Inexact Rounded
+ddsub507 subtract '1231234567456789' 0.499999999 -> '1231234567456789' Inexact Rounded
+ddsub508 subtract '1231234567456789' 0.5 -> '1231234567456789' Inexact Rounded
+ddsub509 subtract '1231234567456789' 0.500000001 -> '1231234567456788' Inexact Rounded
+ddsub510 subtract '1231234567456789' 0.500001 -> '1231234567456788' Inexact Rounded
+ddsub511 subtract '1231234567456789' 0.51 -> '1231234567456788' Inexact Rounded
+ddsub512 subtract '1231234567456789' 0.6 -> '1231234567456788' Inexact Rounded
+ddsub513 subtract '1231234567456789' 0.9 -> '1231234567456788' Inexact Rounded
+ddsub514 subtract '1231234567456789' 0.99999 -> '1231234567456788' Inexact Rounded
+ddsub515 subtract '1231234567456789' 0.999999999 -> '1231234567456788' Inexact Rounded
+ddsub516 subtract '1231234567456789' 1 -> '1231234567456788'
+ddsub517 subtract '1231234567456789' 1.000000001 -> '1231234567456788' Inexact Rounded
+ddsub518 subtract '1231234567456789' 1.00001 -> '1231234567456788' Inexact Rounded
+ddsub519 subtract '1231234567456789' 1.1 -> '1231234567456788' Inexact Rounded
+
+rounding: half_even
+ddsub520 subtract '1231234567456789' 0 -> '1231234567456789'
+ddsub521 subtract '1231234567456789' 0.000000001 -> '1231234567456789' Inexact Rounded
+ddsub522 subtract '1231234567456789' 0.000001 -> '1231234567456789' Inexact Rounded
+ddsub523 subtract '1231234567456789' 0.1 -> '1231234567456789' Inexact Rounded
+ddsub524 subtract '1231234567456789' 0.4 -> '1231234567456789' Inexact Rounded
+ddsub525 subtract '1231234567456789' 0.49 -> '1231234567456789' Inexact Rounded
+ddsub526 subtract '1231234567456789' 0.499999 -> '1231234567456789' Inexact Rounded
+ddsub527 subtract '1231234567456789' 0.499999999 -> '1231234567456789' Inexact Rounded
+ddsub528 subtract '1231234567456789' 0.5 -> '1231234567456788' Inexact Rounded
+ddsub529 subtract '1231234567456789' 0.500000001 -> '1231234567456788' Inexact Rounded
+ddsub530 subtract '1231234567456789' 0.500001 -> '1231234567456788' Inexact Rounded
+ddsub531 subtract '1231234567456789' 0.51 -> '1231234567456788' Inexact Rounded
+ddsub532 subtract '1231234567456789' 0.6 -> '1231234567456788' Inexact Rounded
+ddsub533 subtract '1231234567456789' 0.9 -> '1231234567456788' Inexact Rounded
+ddsub534 subtract '1231234567456789' 0.99999 -> '1231234567456788' Inexact Rounded
+ddsub535 subtract '1231234567456789' 0.999999999 -> '1231234567456788' Inexact Rounded
+ddsub536 subtract '1231234567456789' 1 -> '1231234567456788'
+ddsub537 subtract '1231234567456789' 1.00000001 -> '1231234567456788' Inexact Rounded
+ddsub538 subtract '1231234567456789' 1.00001 -> '1231234567456788' Inexact Rounded
+ddsub539 subtract '1231234567456789' 1.1 -> '1231234567456788' Inexact Rounded
+-- critical few with even bottom digit...
+ddsub540 subtract '1231234567456788' 0.499999999 -> '1231234567456788' Inexact Rounded
+ddsub541 subtract '1231234567456788' 0.5 -> '1231234567456788' Inexact Rounded
+ddsub542 subtract '1231234567456788' 0.500000001 -> '1231234567456787' Inexact Rounded
+
+rounding: down
+ddsub550 subtract '1231234567456789' 0 -> '1231234567456789'
+ddsub551 subtract '1231234567456789' 0.000000001 -> '1231234567456788' Inexact Rounded
+ddsub552 subtract '1231234567456789' 0.000001 -> '1231234567456788' Inexact Rounded
+ddsub553 subtract '1231234567456789' 0.1 -> '1231234567456788' Inexact Rounded
+ddsub554 subtract '1231234567456789' 0.4 -> '1231234567456788' Inexact Rounded
+ddsub555 subtract '1231234567456789' 0.49 -> '1231234567456788' Inexact Rounded
+ddsub556 subtract '1231234567456789' 0.499999 -> '1231234567456788' Inexact Rounded
+ddsub557 subtract '1231234567456789' 0.499999999 -> '1231234567456788' Inexact Rounded
+ddsub558 subtract '1231234567456789' 0.5 -> '1231234567456788' Inexact Rounded
+ddsub559 subtract '1231234567456789' 0.500000001 -> '1231234567456788' Inexact Rounded
+ddsub560 subtract '1231234567456789' 0.500001 -> '1231234567456788' Inexact Rounded
+ddsub561 subtract '1231234567456789' 0.51 -> '1231234567456788' Inexact Rounded
+ddsub562 subtract '1231234567456789' 0.6 -> '1231234567456788' Inexact Rounded
+ddsub563 subtract '1231234567456789' 0.9 -> '1231234567456788' Inexact Rounded
+ddsub564 subtract '1231234567456789' 0.99999 -> '1231234567456788' Inexact Rounded
+ddsub565 subtract '1231234567456789' 0.999999999 -> '1231234567456788' Inexact Rounded
+ddsub566 subtract '1231234567456789' 1 -> '1231234567456788'
+ddsub567 subtract '1231234567456789' 1.00000001 -> '1231234567456787' Inexact Rounded
+ddsub568 subtract '1231234567456789' 1.00001 -> '1231234567456787' Inexact Rounded
+ddsub569 subtract '1231234567456789' 1.1 -> '1231234567456787' Inexact Rounded
+
+-- symmetry...
+rounding: half_up
+ddsub600 subtract 0 '1231234567456789' -> '-1231234567456789'
+ddsub601 subtract 0.000000001 '1231234567456789' -> '-1231234567456789' Inexact Rounded
+ddsub602 subtract 0.000001 '1231234567456789' -> '-1231234567456789' Inexact Rounded
+ddsub603 subtract 0.1 '1231234567456789' -> '-1231234567456789' Inexact Rounded
+ddsub604 subtract 0.4 '1231234567456789' -> '-1231234567456789' Inexact Rounded
+ddsub605 subtract 0.49 '1231234567456789' -> '-1231234567456789' Inexact Rounded
+ddsub606 subtract 0.499999 '1231234567456789' -> '-1231234567456789' Inexact Rounded
+ddsub607 subtract 0.499999999 '1231234567456789' -> '-1231234567456789' Inexact Rounded
+ddsub608 subtract 0.5 '1231234567456789' -> '-1231234567456789' Inexact Rounded
+ddsub609 subtract 0.500000001 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub610 subtract 0.500001 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub611 subtract 0.51 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub612 subtract 0.6 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub613 subtract 0.9 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub614 subtract 0.99999 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub615 subtract 0.999999999 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub616 subtract 1 '1231234567456789' -> '-1231234567456788'
+ddsub617 subtract 1.000000001 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub618 subtract 1.00001 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub619 subtract 1.1 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+
+rounding: half_even
+ddsub620 subtract 0 '1231234567456789' -> '-1231234567456789'
+ddsub621 subtract 0.000000001 '1231234567456789' -> '-1231234567456789' Inexact Rounded
+ddsub622 subtract 0.000001 '1231234567456789' -> '-1231234567456789' Inexact Rounded
+ddsub623 subtract 0.1 '1231234567456789' -> '-1231234567456789' Inexact Rounded
+ddsub624 subtract 0.4 '1231234567456789' -> '-1231234567456789' Inexact Rounded
+ddsub625 subtract 0.49 '1231234567456789' -> '-1231234567456789' Inexact Rounded
+ddsub626 subtract 0.499999 '1231234567456789' -> '-1231234567456789' Inexact Rounded
+ddsub627 subtract 0.499999999 '1231234567456789' -> '-1231234567456789' Inexact Rounded
+ddsub628 subtract 0.5 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub629 subtract 0.500000001 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub630 subtract 0.500001 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub631 subtract 0.51 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub632 subtract 0.6 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub633 subtract 0.9 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub634 subtract 0.99999 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub635 subtract 0.999999999 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub636 subtract 1 '1231234567456789' -> '-1231234567456788'
+ddsub637 subtract 1.00000001 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub638 subtract 1.00001 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub639 subtract 1.1 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+-- critical few with even bottom digit...
+ddsub640 subtract 0.499999999 '1231234567456788' -> '-1231234567456788' Inexact Rounded
+ddsub641 subtract 0.5 '1231234567456788' -> '-1231234567456788' Inexact Rounded
+ddsub642 subtract 0.500000001 '1231234567456788' -> '-1231234567456787' Inexact Rounded
+
+rounding: down
+ddsub650 subtract 0 '1231234567456789' -> '-1231234567456789'
+ddsub651 subtract 0.000000001 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub652 subtract 0.000001 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub653 subtract 0.1 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub654 subtract 0.4 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub655 subtract 0.49 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub656 subtract 0.499999 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub657 subtract 0.499999999 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub658 subtract 0.5 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub659 subtract 0.500000001 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub660 subtract 0.500001 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub661 subtract 0.51 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub662 subtract 0.6 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub663 subtract 0.9 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub664 subtract 0.99999 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub665 subtract 0.999999999 '1231234567456789' -> '-1231234567456788' Inexact Rounded
+ddsub666 subtract 1 '1231234567456789' -> '-1231234567456788'
+ddsub667 subtract 1.00000001 '1231234567456789' -> '-1231234567456787' Inexact Rounded
+ddsub668 subtract 1.00001 '1231234567456789' -> '-1231234567456787' Inexact Rounded
+ddsub669 subtract 1.1 '1231234567456789' -> '-1231234567456787' Inexact Rounded
+
+
+-- lots of leading zeros in intermediate result, and showing effects of
+-- input rounding would have affected the following
+rounding: half_up
+ddsub670 subtract '1234567456789' '1234567456788.1' -> 0.9
+ddsub671 subtract '1234567456789' '1234567456788.9' -> 0.1
+ddsub672 subtract '1234567456789' '1234567456789.1' -> -0.1
+ddsub673 subtract '1234567456789' '1234567456789.5' -> -0.5
+ddsub674 subtract '1234567456789' '1234567456789.9' -> -0.9
+
+rounding: half_even
+ddsub680 subtract '1234567456789' '1234567456788.1' -> 0.9
+ddsub681 subtract '1234567456789' '1234567456788.9' -> 0.1
+ddsub682 subtract '1234567456789' '1234567456789.1' -> -0.1
+ddsub683 subtract '1234567456789' '1234567456789.5' -> -0.5
+ddsub684 subtract '1234567456789' '1234567456789.9' -> -0.9
+
+ddsub685 subtract '1234567456788' '1234567456787.1' -> 0.9
+ddsub686 subtract '1234567456788' '1234567456787.9' -> 0.1
+ddsub687 subtract '1234567456788' '1234567456788.1' -> -0.1
+ddsub688 subtract '1234567456788' '1234567456788.5' -> -0.5
+ddsub689 subtract '1234567456788' '1234567456788.9' -> -0.9
+
+rounding: down
+ddsub690 subtract '1234567456789' '1234567456788.1' -> 0.9
+ddsub691 subtract '1234567456789' '1234567456788.9' -> 0.1
+ddsub692 subtract '1234567456789' '1234567456789.1' -> -0.1
+ddsub693 subtract '1234567456789' '1234567456789.5' -> -0.5
+ddsub694 subtract '1234567456789' '1234567456789.9' -> -0.9
+
+-- Specials
+ddsub780 subtract -Inf Inf -> -Infinity
+ddsub781 subtract -Inf 1000 -> -Infinity
+ddsub782 subtract -Inf 1 -> -Infinity
+ddsub783 subtract -Inf -0 -> -Infinity
+ddsub784 subtract -Inf -1 -> -Infinity
+ddsub785 subtract -Inf -1000 -> -Infinity
+ddsub787 subtract -1000 Inf -> -Infinity
+ddsub788 subtract -Inf Inf -> -Infinity
+ddsub789 subtract -1 Inf -> -Infinity
+ddsub790 subtract 0 Inf -> -Infinity
+ddsub791 subtract 1 Inf -> -Infinity
+ddsub792 subtract 1000 Inf -> -Infinity
+
+ddsub800 subtract Inf Inf -> NaN Invalid_operation
+ddsub801 subtract Inf 1000 -> Infinity
+ddsub802 subtract Inf 1 -> Infinity
+ddsub803 subtract Inf 0 -> Infinity
+ddsub804 subtract Inf -0 -> Infinity
+ddsub805 subtract Inf -1 -> Infinity
+ddsub806 subtract Inf -1000 -> Infinity
+ddsub807 subtract Inf -Inf -> Infinity
+ddsub808 subtract -1000 -Inf -> Infinity
+ddsub809 subtract -Inf -Inf -> NaN Invalid_operation
+ddsub810 subtract -1 -Inf -> Infinity
+ddsub811 subtract -0 -Inf -> Infinity
+ddsub812 subtract 0 -Inf -> Infinity
+ddsub813 subtract 1 -Inf -> Infinity
+ddsub814 subtract 1000 -Inf -> Infinity
+ddsub815 subtract Inf -Inf -> Infinity
+
+ddsub821 subtract NaN Inf -> NaN
+ddsub822 subtract -NaN 1000 -> -NaN
+ddsub823 subtract NaN 1 -> NaN
+ddsub824 subtract NaN 0 -> NaN
+ddsub825 subtract NaN -0 -> NaN
+ddsub826 subtract NaN -1 -> NaN
+ddsub827 subtract NaN -1000 -> NaN
+ddsub828 subtract NaN -Inf -> NaN
+ddsub829 subtract -NaN NaN -> -NaN
+ddsub830 subtract -Inf NaN -> NaN
+ddsub831 subtract -1000 NaN -> NaN
+ddsub832 subtract -1 NaN -> NaN
+ddsub833 subtract -0 NaN -> NaN
+ddsub834 subtract 0 NaN -> NaN
+ddsub835 subtract 1 NaN -> NaN
+ddsub836 subtract 1000 -NaN -> -NaN
+ddsub837 subtract Inf NaN -> NaN
+
+ddsub841 subtract sNaN Inf -> NaN Invalid_operation
+ddsub842 subtract -sNaN 1000 -> -NaN Invalid_operation
+ddsub843 subtract sNaN 1 -> NaN Invalid_operation
+ddsub844 subtract sNaN 0 -> NaN Invalid_operation
+ddsub845 subtract sNaN -0 -> NaN Invalid_operation
+ddsub846 subtract sNaN -1 -> NaN Invalid_operation
+ddsub847 subtract sNaN -1000 -> NaN Invalid_operation
+ddsub848 subtract sNaN NaN -> NaN Invalid_operation
+ddsub849 subtract sNaN sNaN -> NaN Invalid_operation
+ddsub850 subtract NaN sNaN -> NaN Invalid_operation
+ddsub851 subtract -Inf -sNaN -> -NaN Invalid_operation
+ddsub852 subtract -1000 sNaN -> NaN Invalid_operation
+ddsub853 subtract -1 sNaN -> NaN Invalid_operation
+ddsub854 subtract -0 sNaN -> NaN Invalid_operation
+ddsub855 subtract 0 sNaN -> NaN Invalid_operation
+ddsub856 subtract 1 sNaN -> NaN Invalid_operation
+ddsub857 subtract 1000 sNaN -> NaN Invalid_operation
+ddsub858 subtract Inf sNaN -> NaN Invalid_operation
+ddsub859 subtract NaN sNaN -> NaN Invalid_operation
+
+-- propagating NaNs
+ddsub861 subtract NaN01 -Inf -> NaN1
+ddsub862 subtract -NaN02 -1000 -> -NaN2
+ddsub863 subtract NaN03 1000 -> NaN3
+ddsub864 subtract NaN04 Inf -> NaN4
+ddsub865 subtract NaN05 NaN61 -> NaN5
+ddsub866 subtract -Inf -NaN71 -> -NaN71
+ddsub867 subtract -1000 NaN81 -> NaN81
+ddsub868 subtract 1000 NaN91 -> NaN91
+ddsub869 subtract Inf NaN101 -> NaN101
+ddsub871 subtract sNaN011 -Inf -> NaN11 Invalid_operation
+ddsub872 subtract sNaN012 -1000 -> NaN12 Invalid_operation
+ddsub873 subtract -sNaN013 1000 -> -NaN13 Invalid_operation
+ddsub874 subtract sNaN014 NaN171 -> NaN14 Invalid_operation
+ddsub875 subtract sNaN015 sNaN181 -> NaN15 Invalid_operation
+ddsub876 subtract NaN016 sNaN191 -> NaN191 Invalid_operation
+ddsub877 subtract -Inf sNaN201 -> NaN201 Invalid_operation
+ddsub878 subtract -1000 sNaN211 -> NaN211 Invalid_operation
+ddsub879 subtract 1000 -sNaN221 -> -NaN221 Invalid_operation
+ddsub880 subtract Inf sNaN231 -> NaN231 Invalid_operation
+ddsub881 subtract NaN025 sNaN241 -> NaN241 Invalid_operation
+
+-- edge case spills
+ddsub901 subtract 2.E-3 1.002 -> -1.000
+ddsub902 subtract 2.0E-3 1.002 -> -1.0000
+ddsub903 subtract 2.00E-3 1.0020 -> -1.00000
+ddsub904 subtract 2.000E-3 1.00200 -> -1.000000
+ddsub905 subtract 2.0000E-3 1.002000 -> -1.0000000
+ddsub906 subtract 2.00000E-3 1.0020000 -> -1.00000000
+ddsub907 subtract 2.000000E-3 1.00200000 -> -1.000000000
+ddsub908 subtract 2.0000000E-3 1.002000000 -> -1.0000000000
+
+-- subnormals and overflows covered under Add
+
+-- Null tests
+ddsub9990 subtract 10 # -> NaN Invalid_operation
+ddsub9991 subtract # 10 -> NaN Invalid_operation