1 ------------------------------------------------------------------------ 2 -- dqSubtract.decTest -- decQuad subtraction -- 3 -- Copyright (c) IBM Corporation, 1981, 2008. All rights reserved. -- 4 ------------------------------------------------------------------------ 5 -- Please see the document "General Decimal Arithmetic Testcases" -- 6 -- at http://www2.hursley.ibm.com/decimal for the description of -- 7 -- these testcases. -- 8 -- -- 9 -- These testcases are experimental ('beta' versions), and they -- 10 -- may contain errors. They are offered on an as-is basis. In -- 11 -- particular, achieving the same results as the tests here is not -- 12 -- a guarantee that an implementation complies with any Standard -- 13 -- or specification. The tests are not exhaustive. -- 14 -- -- 15 -- Please send comments, suggestions, and corrections to the author: -- 16 -- Mike Cowlishaw, IBM Fellow -- 17 -- IBM UK, PO Box 31, Birmingham Road, Warwick CV34 5JL, UK -- 18 -- mfc (a] uk.ibm.com -- 19 ------------------------------------------------------------------------ 20 version: 2.59 21 22 -- This set of tests are for decQuads only; all arguments are 23 -- representable in a decQuad 24 extended: 1 25 clamp: 1 26 precision: 34 27 maxExponent: 6144 28 minExponent: -6143 29 rounding: half_even 30 31 -- [first group are 'quick confidence check'] 32 dqsub001 subtract 0 0 -> '0' 33 dqsub002 subtract 1 1 -> '0' 34 dqsub003 subtract 1 2 -> '-1' 35 dqsub004 subtract 2 1 -> '1' 36 dqsub005 subtract 2 2 -> '0' 37 dqsub006 subtract 3 2 -> '1' 38 dqsub007 subtract 2 3 -> '-1' 39 40 dqsub011 subtract -0 0 -> '-0' 41 dqsub012 subtract -1 1 -> '-2' 42 dqsub013 subtract -1 2 -> '-3' 43 dqsub014 subtract -2 1 -> '-3' 44 dqsub015 subtract -2 2 -> '-4' 45 dqsub016 subtract -3 2 -> '-5' 46 dqsub017 subtract -2 3 -> '-5' 47 48 dqsub021 subtract 0 -0 -> '0' 49 dqsub022 subtract 1 -1 -> '2' 50 dqsub023 subtract 1 -2 -> '3' 51 dqsub024 subtract 2 -1 -> '3' 52 dqsub025 subtract 2 -2 -> '4' 53 dqsub026 subtract 3 -2 -> '5' 54 dqsub027 subtract 2 -3 -> '5' 55 56 dqsub030 subtract 11 1 -> 10 57 dqsub031 subtract 10 1 -> 9 58 dqsub032 subtract 9 1 -> 8 59 dqsub033 subtract 1 1 -> 0 60 dqsub034 subtract 0 1 -> -1 61 dqsub035 subtract -1 1 -> -2 62 dqsub036 subtract -9 1 -> -10 63 dqsub037 subtract -10 1 -> -11 64 dqsub038 subtract -11 1 -> -12 65 66 dqsub040 subtract '5.75' '3.3' -> '2.45' 67 dqsub041 subtract '5' '-3' -> '8' 68 dqsub042 subtract '-5' '-3' -> '-2' 69 dqsub043 subtract '-7' '2.5' -> '-9.5' 70 dqsub044 subtract '0.7' '0.3' -> '0.4' 71 dqsub045 subtract '1.3' '0.3' -> '1.0' 72 dqsub046 subtract '1.25' '1.25' -> '0.00' 73 74 dqsub050 subtract '1.23456789' '1.00000000' -> '0.23456789' 75 dqsub051 subtract '1.23456789' '1.00000089' -> '0.23456700' 76 77 dqsub060 subtract '70' '10000e+34' -> '-1.000000000000000000000000000000000E+38' Inexact Rounded 78 dqsub061 subtract '700' '10000e+34' -> '-1.000000000000000000000000000000000E+38' Inexact Rounded 79 dqsub062 subtract '7000' '10000e+34' -> '-9.999999999999999999999999999999999E+37' Inexact Rounded 80 dqsub063 subtract '70000' '10000e+34' -> '-9.999999999999999999999999999999993E+37' Rounded 81 dqsub064 subtract '700000' '10000e+34' -> '-9.999999999999999999999999999999930E+37' Rounded 82 -- symmetry: 83 dqsub065 subtract '10000e+34' '70' -> '1.000000000000000000000000000000000E+38' Inexact Rounded 84 dqsub066 subtract '10000e+34' '700' -> '1.000000000000000000000000000000000E+38' Inexact Rounded 85 dqsub067 subtract '10000e+34' '7000' -> '9.999999999999999999999999999999999E+37' Inexact Rounded 86 dqsub068 subtract '10000e+34' '70000' -> '9.999999999999999999999999999999993E+37' Rounded 87 dqsub069 subtract '10000e+34' '700000' -> '9.999999999999999999999999999999930E+37' Rounded 88 89 -- some of the next group are really constructor tests 90 dqsub090 subtract '00.0' '0.0' -> '0.0' 91 dqsub091 subtract '00.0' '0.00' -> '0.00' 92 dqsub092 subtract '0.00' '00.0' -> '0.00' 93 dqsub093 subtract '00.0' '0.00' -> '0.00' 94 dqsub094 subtract '0.00' '00.0' -> '0.00' 95 dqsub095 subtract '3' '.3' -> '2.7' 96 dqsub096 subtract '3.' '.3' -> '2.7' 97 dqsub097 subtract '3.0' '.3' -> '2.7' 98 dqsub098 subtract '3.00' '.3' -> '2.70' 99 dqsub099 subtract '3' '3' -> '0' 100 dqsub100 subtract '3' '+3' -> '0' 101 dqsub101 subtract '3' '-3' -> '6' 102 dqsub102 subtract '3' '0.3' -> '2.7' 103 dqsub103 subtract '3.' '0.3' -> '2.7' 104 dqsub104 subtract '3.0' '0.3' -> '2.7' 105 dqsub105 subtract '3.00' '0.3' -> '2.70' 106 dqsub106 subtract '3' '3.0' -> '0.0' 107 dqsub107 subtract '3' '+3.0' -> '0.0' 108 dqsub108 subtract '3' '-3.0' -> '6.0' 109 110 -- the above all from add; massaged and extended. Now some new ones... 111 -- [particularly important for comparisons] 112 -- NB: -xE-8 below were non-exponents pre-ANSI X3-274, and -1E-7 or 0E-7 113 -- with input rounding. 114 dqsub120 subtract '10.23456784' '10.23456789' -> '-5E-8' 115 dqsub121 subtract '10.23456785' '10.23456789' -> '-4E-8' 116 dqsub122 subtract '10.23456786' '10.23456789' -> '-3E-8' 117 dqsub123 subtract '10.23456787' '10.23456789' -> '-2E-8' 118 dqsub124 subtract '10.23456788' '10.23456789' -> '-1E-8' 119 dqsub125 subtract '10.23456789' '10.23456789' -> '0E-8' 120 dqsub126 subtract '10.23456790' '10.23456789' -> '1E-8' 121 dqsub127 subtract '10.23456791' '10.23456789' -> '2E-8' 122 dqsub128 subtract '10.23456792' '10.23456789' -> '3E-8' 123 dqsub129 subtract '10.23456793' '10.23456789' -> '4E-8' 124 dqsub130 subtract '10.23456794' '10.23456789' -> '5E-8' 125 dqsub131 subtract '10.23456781' '10.23456786' -> '-5E-8' 126 dqsub132 subtract '10.23456782' '10.23456786' -> '-4E-8' 127 dqsub133 subtract '10.23456783' '10.23456786' -> '-3E-8' 128 dqsub134 subtract '10.23456784' '10.23456786' -> '-2E-8' 129 dqsub135 subtract '10.23456785' '10.23456786' -> '-1E-8' 130 dqsub136 subtract '10.23456786' '10.23456786' -> '0E-8' 131 dqsub137 subtract '10.23456787' '10.23456786' -> '1E-8' 132 dqsub138 subtract '10.23456788' '10.23456786' -> '2E-8' 133 dqsub139 subtract '10.23456789' '10.23456786' -> '3E-8' 134 dqsub140 subtract '10.23456790' '10.23456786' -> '4E-8' 135 dqsub141 subtract '10.23456791' '10.23456786' -> '5E-8' 136 dqsub142 subtract '1' '0.999999999' -> '1E-9' 137 dqsub143 subtract '0.999999999' '1' -> '-1E-9' 138 dqsub144 subtract '-10.23456780' '-10.23456786' -> '6E-8' 139 dqsub145 subtract '-10.23456790' '-10.23456786' -> '-4E-8' 140 dqsub146 subtract '-10.23456791' '-10.23456786' -> '-5E-8' 141 142 -- additional scaled arithmetic tests [0.97 problem] 143 dqsub160 subtract '0' '.1' -> '-0.1' 144 dqsub161 subtract '00' '.97983' -> '-0.97983' 145 dqsub162 subtract '0' '.9' -> '-0.9' 146 dqsub163 subtract '0' '0.102' -> '-0.102' 147 dqsub164 subtract '0' '.4' -> '-0.4' 148 dqsub165 subtract '0' '.307' -> '-0.307' 149 dqsub166 subtract '0' '.43822' -> '-0.43822' 150 dqsub167 subtract '0' '.911' -> '-0.911' 151 dqsub168 subtract '.0' '.02' -> '-0.02' 152 dqsub169 subtract '00' '.392' -> '-0.392' 153 dqsub170 subtract '0' '.26' -> '-0.26' 154 dqsub171 subtract '0' '0.51' -> '-0.51' 155 dqsub172 subtract '0' '.2234' -> '-0.2234' 156 dqsub173 subtract '0' '.2' -> '-0.2' 157 dqsub174 subtract '.0' '.0008' -> '-0.0008' 158 -- 0. on left 159 dqsub180 subtract '0.0' '-.1' -> '0.1' 160 dqsub181 subtract '0.00' '-.97983' -> '0.97983' 161 dqsub182 subtract '0.0' '-.9' -> '0.9' 162 dqsub183 subtract '0.0' '-0.102' -> '0.102' 163 dqsub184 subtract '0.0' '-.4' -> '0.4' 164 dqsub185 subtract '0.0' '-.307' -> '0.307' 165 dqsub186 subtract '0.0' '-.43822' -> '0.43822' 166 dqsub187 subtract '0.0' '-.911' -> '0.911' 167 dqsub188 subtract '0.0' '-.02' -> '0.02' 168 dqsub189 subtract '0.00' '-.392' -> '0.392' 169 dqsub190 subtract '0.0' '-.26' -> '0.26' 170 dqsub191 subtract '0.0' '-0.51' -> '0.51' 171 dqsub192 subtract '0.0' '-.2234' -> '0.2234' 172 dqsub193 subtract '0.0' '-.2' -> '0.2' 173 dqsub194 subtract '0.0' '-.0008' -> '0.0008' 174 -- negatives of same 175 dqsub200 subtract '0' '-.1' -> '0.1' 176 dqsub201 subtract '00' '-.97983' -> '0.97983' 177 dqsub202 subtract '0' '-.9' -> '0.9' 178 dqsub203 subtract '0' '-0.102' -> '0.102' 179 dqsub204 subtract '0' '-.4' -> '0.4' 180 dqsub205 subtract '0' '-.307' -> '0.307' 181 dqsub206 subtract '0' '-.43822' -> '0.43822' 182 dqsub207 subtract '0' '-.911' -> '0.911' 183 dqsub208 subtract '.0' '-.02' -> '0.02' 184 dqsub209 subtract '00' '-.392' -> '0.392' 185 dqsub210 subtract '0' '-.26' -> '0.26' 186 dqsub211 subtract '0' '-0.51' -> '0.51' 187 dqsub212 subtract '0' '-.2234' -> '0.2234' 188 dqsub213 subtract '0' '-.2' -> '0.2' 189 dqsub214 subtract '.0' '-.0008' -> '0.0008' 190 191 -- more fixed, LHS swaps [really the same as testcases under add] 192 dqsub220 subtract '-56267E-12' 0 -> '-5.6267E-8' 193 dqsub221 subtract '-56267E-11' 0 -> '-5.6267E-7' 194 dqsub222 subtract '-56267E-10' 0 -> '-0.0000056267' 195 dqsub223 subtract '-56267E-9' 0 -> '-0.000056267' 196 dqsub224 subtract '-56267E-8' 0 -> '-0.00056267' 197 dqsub225 subtract '-56267E-7' 0 -> '-0.0056267' 198 dqsub226 subtract '-56267E-6' 0 -> '-0.056267' 199 dqsub227 subtract '-56267E-5' 0 -> '-0.56267' 200 dqsub228 subtract '-56267E-2' 0 -> '-562.67' 201 dqsub229 subtract '-56267E-1' 0 -> '-5626.7' 202 dqsub230 subtract '-56267E-0' 0 -> '-56267' 203 -- symmetry ... 204 dqsub240 subtract 0 '-56267E-12' -> '5.6267E-8' 205 dqsub241 subtract 0 '-56267E-11' -> '5.6267E-7' 206 dqsub242 subtract 0 '-56267E-10' -> '0.0000056267' 207 dqsub243 subtract 0 '-56267E-9' -> '0.000056267' 208 dqsub244 subtract 0 '-56267E-8' -> '0.00056267' 209 dqsub245 subtract 0 '-56267E-7' -> '0.0056267' 210 dqsub246 subtract 0 '-56267E-6' -> '0.056267' 211 dqsub247 subtract 0 '-56267E-5' -> '0.56267' 212 dqsub248 subtract 0 '-56267E-2' -> '562.67' 213 dqsub249 subtract 0 '-56267E-1' -> '5626.7' 214 dqsub250 subtract 0 '-56267E-0' -> '56267' 215 216 -- now some more from the 'new' add 217 dqsub301 subtract '1.23456789' '1.00000000' -> '0.23456789' 218 dqsub302 subtract '1.23456789' '1.00000011' -> '0.23456778' 219 220 -- some carrying effects 221 dqsub321 subtract '0.9998' '0.0000' -> '0.9998' 222 dqsub322 subtract '0.9998' '0.0001' -> '0.9997' 223 dqsub323 subtract '0.9998' '0.0002' -> '0.9996' 224 dqsub324 subtract '0.9998' '0.0003' -> '0.9995' 225 dqsub325 subtract '0.9998' '-0.0000' -> '0.9998' 226 dqsub326 subtract '0.9998' '-0.0001' -> '0.9999' 227 dqsub327 subtract '0.9998' '-0.0002' -> '1.0000' 228 dqsub328 subtract '0.9998' '-0.0003' -> '1.0001' 229 230 -- internal boundaries 231 dqsub346 subtract '10000e+9' '7' -> '9999999999993' 232 dqsub347 subtract '10000e+9' '70' -> '9999999999930' 233 dqsub348 subtract '10000e+9' '700' -> '9999999999300' 234 dqsub349 subtract '10000e+9' '7000' -> '9999999993000' 235 dqsub350 subtract '10000e+9' '70000' -> '9999999930000' 236 dqsub351 subtract '10000e+9' '700000' -> '9999999300000' 237 dqsub352 subtract '7' '10000e+9' -> '-9999999999993' 238 dqsub353 subtract '70' '10000e+9' -> '-9999999999930' 239 dqsub354 subtract '700' '10000e+9' -> '-9999999999300' 240 dqsub355 subtract '7000' '10000e+9' -> '-9999999993000' 241 dqsub356 subtract '70000' '10000e+9' -> '-9999999930000' 242 dqsub357 subtract '700000' '10000e+9' -> '-9999999300000' 243 244 -- zero preservation 245 dqsub361 subtract 1 '0.0001' -> '0.9999' 246 dqsub362 subtract 1 '0.00001' -> '0.99999' 247 dqsub363 subtract 1 '0.000001' -> '0.999999' 248 dqsub364 subtract 1 '0.0000000000000000000000000000000001' -> '0.9999999999999999999999999999999999' 249 dqsub365 subtract 1 '0.00000000000000000000000000000000001' -> '1.000000000000000000000000000000000' Inexact Rounded 250 dqsub366 subtract 1 '0.000000000000000000000000000000000001' -> '1.000000000000000000000000000000000' Inexact Rounded 251 252 -- some funny zeros [in case of bad signum] 253 dqsub370 subtract 1 0 -> 1 254 dqsub371 subtract 1 0. -> 1 255 dqsub372 subtract 1 .0 -> 1.0 256 dqsub373 subtract 1 0.0 -> 1.0 257 dqsub374 subtract 0 1 -> -1 258 dqsub375 subtract 0. 1 -> -1 259 dqsub376 subtract .0 1 -> -1.0 260 dqsub377 subtract 0.0 1 -> -1.0 261 262 -- leading 0 digit before round 263 dqsub910 subtract -103519362 -51897955.3 -> -51621406.7 264 dqsub911 subtract 159579.444 89827.5229 -> 69751.9211 265 266 dqsub920 subtract 333.0000000000000000000000000123456 33.00000000000000000000000001234566 -> 299.9999999999999999999999999999999 Inexact Rounded 267 dqsub921 subtract 333.0000000000000000000000000123456 33.00000000000000000000000001234565 -> 300.0000000000000000000000000000000 Inexact Rounded 268 dqsub922 subtract 133.0000000000000000000000000123456 33.00000000000000000000000001234565 -> 99.99999999999999999999999999999995 269 dqsub923 subtract 133.0000000000000000000000000123456 33.00000000000000000000000001234564 -> 99.99999999999999999999999999999996 270 dqsub924 subtract 133.0000000000000000000000000123456 33.00000000000000000000000001234540 -> 100.0000000000000000000000000000002 Rounded 271 dqsub925 subtract 133.0000000000000000000000000123456 43.00000000000000000000000001234560 -> 90.00000000000000000000000000000000 272 dqsub926 subtract 133.0000000000000000000000000123456 43.00000000000000000000000001234561 -> 89.99999999999999999999999999999999 273 dqsub927 subtract 133.0000000000000000000000000123456 43.00000000000000000000000001234566 -> 89.99999999999999999999999999999994 274 dqsub928 subtract 101.0000000000000000000000000123456 91.00000000000000000000000001234566 -> 9.99999999999999999999999999999994 275 dqsub929 subtract 101.0000000000000000000000000123456 99.00000000000000000000000001234566 -> 1.99999999999999999999999999999994 276 277 -- more LHS swaps [were fixed] 278 dqsub390 subtract '-56267E-10' 0 -> '-0.0000056267' 279 dqsub391 subtract '-56267E-6' 0 -> '-0.056267' 280 dqsub392 subtract '-56267E-5' 0 -> '-0.56267' 281 dqsub393 subtract '-56267E-4' 0 -> '-5.6267' 282 dqsub394 subtract '-56267E-3' 0 -> '-56.267' 283 dqsub395 subtract '-56267E-2' 0 -> '-562.67' 284 dqsub396 subtract '-56267E-1' 0 -> '-5626.7' 285 dqsub397 subtract '-56267E-0' 0 -> '-56267' 286 dqsub398 subtract '-5E-10' 0 -> '-5E-10' 287 dqsub399 subtract '-5E-7' 0 -> '-5E-7' 288 dqsub400 subtract '-5E-6' 0 -> '-0.000005' 289 dqsub401 subtract '-5E-5' 0 -> '-0.00005' 290 dqsub402 subtract '-5E-4' 0 -> '-0.0005' 291 dqsub403 subtract '-5E-1' 0 -> '-0.5' 292 dqsub404 subtract '-5E0' 0 -> '-5' 293 dqsub405 subtract '-5E1' 0 -> '-50' 294 dqsub406 subtract '-5E5' 0 -> '-500000' 295 dqsub407 subtract '-5E33' 0 -> '-5000000000000000000000000000000000' 296 dqsub408 subtract '-5E34' 0 -> '-5.000000000000000000000000000000000E+34' Rounded 297 dqsub409 subtract '-5E35' 0 -> '-5.000000000000000000000000000000000E+35' Rounded 298 dqsub410 subtract '-5E36' 0 -> '-5.000000000000000000000000000000000E+36' Rounded 299 dqsub411 subtract '-5E100' 0 -> '-5.000000000000000000000000000000000E+100' Rounded 300 301 -- more RHS swaps [were fixed] 302 dqsub420 subtract 0 '-56267E-10' -> '0.0000056267' 303 dqsub421 subtract 0 '-56267E-6' -> '0.056267' 304 dqsub422 subtract 0 '-56267E-5' -> '0.56267' 305 dqsub423 subtract 0 '-56267E-4' -> '5.6267' 306 dqsub424 subtract 0 '-56267E-3' -> '56.267' 307 dqsub425 subtract 0 '-56267E-2' -> '562.67' 308 dqsub426 subtract 0 '-56267E-1' -> '5626.7' 309 dqsub427 subtract 0 '-56267E-0' -> '56267' 310 dqsub428 subtract 0 '-5E-10' -> '5E-10' 311 dqsub429 subtract 0 '-5E-7' -> '5E-7' 312 dqsub430 subtract 0 '-5E-6' -> '0.000005' 313 dqsub431 subtract 0 '-5E-5' -> '0.00005' 314 dqsub432 subtract 0 '-5E-4' -> '0.0005' 315 dqsub433 subtract 0 '-5E-1' -> '0.5' 316 dqsub434 subtract 0 '-5E0' -> '5' 317 dqsub435 subtract 0 '-5E1' -> '50' 318 dqsub436 subtract 0 '-5E5' -> '500000' 319 dqsub437 subtract 0 '-5E33' -> '5000000000000000000000000000000000' 320 dqsub438 subtract 0 '-5E34' -> '5.000000000000000000000000000000000E+34' Rounded 321 dqsub439 subtract 0 '-5E35' -> '5.000000000000000000000000000000000E+35' Rounded 322 dqsub440 subtract 0 '-5E36' -> '5.000000000000000000000000000000000E+36' Rounded 323 dqsub441 subtract 0 '-5E100' -> '5.000000000000000000000000000000000E+100' Rounded 324 325 326 -- try borderline precision, with carries, etc. 327 dqsub461 subtract '1E+16' '1' -> '9999999999999999' 328 dqsub462 subtract '1E+12' '-1.111' -> '1000000000001.111' 329 dqsub463 subtract '1.111' '-1E+12' -> '1000000000001.111' 330 dqsub464 subtract '-1' '-1E+16' -> '9999999999999999' 331 dqsub465 subtract '7E+15' '1' -> '6999999999999999' 332 dqsub466 subtract '7E+12' '-1.111' -> '7000000000001.111' 333 dqsub467 subtract '1.111' '-7E+12' -> '7000000000001.111' 334 dqsub468 subtract '-1' '-7E+15' -> '6999999999999999' 335 336 -- 1234567890123456 1234567890123456 1 23456789012345 337 dqsub470 subtract '0.4444444444444444444444444444444444' '-0.5555555555555555555555555555555563' -> '1.000000000000000000000000000000001' Inexact Rounded 338 dqsub471 subtract '0.4444444444444444444444444444444444' '-0.5555555555555555555555555555555562' -> '1.000000000000000000000000000000001' Inexact Rounded 339 dqsub472 subtract '0.4444444444444444444444444444444444' '-0.5555555555555555555555555555555561' -> '1.000000000000000000000000000000000' Inexact Rounded 340 dqsub473 subtract '0.4444444444444444444444444444444444' '-0.5555555555555555555555555555555560' -> '1.000000000000000000000000000000000' Inexact Rounded 341 dqsub474 subtract '0.4444444444444444444444444444444444' '-0.5555555555555555555555555555555559' -> '1.000000000000000000000000000000000' Inexact Rounded 342 dqsub475 subtract '0.4444444444444444444444444444444444' '-0.5555555555555555555555555555555558' -> '1.000000000000000000000000000000000' Inexact Rounded 343 dqsub476 subtract '0.4444444444444444444444444444444444' '-0.5555555555555555555555555555555557' -> '1.000000000000000000000000000000000' Inexact Rounded 344 dqsub477 subtract '0.4444444444444444444444444444444444' '-0.5555555555555555555555555555555556' -> '1.000000000000000000000000000000000' Rounded 345 dqsub478 subtract '0.4444444444444444444444444444444444' '-0.5555555555555555555555555555555555' -> '0.9999999999999999999999999999999999' 346 dqsub479 subtract '0.4444444444444444444444444444444444' '-0.5555555555555555555555555555555554' -> '0.9999999999999999999999999999999998' 347 dqsub480 subtract '0.4444444444444444444444444444444444' '-0.5555555555555555555555555555555553' -> '0.9999999999999999999999999999999997' 348 dqsub481 subtract '0.4444444444444444444444444444444444' '-0.5555555555555555555555555555555552' -> '0.9999999999999999999999999999999996' 349 dqsub482 subtract '0.4444444444444444444444444444444444' '-0.5555555555555555555555555555555551' -> '0.9999999999999999999999999999999995' 350 dqsub483 subtract '0.4444444444444444444444444444444444' '-0.5555555555555555555555555555555550' -> '0.9999999999999999999999999999999994' 351 352 -- and some more, including residue effects and different roundings 353 rounding: half_up 354 dqsub500 subtract '1231234555555555555555555567456789' 0 -> '1231234555555555555555555567456789' 355 dqsub501 subtract '1231234555555555555555555567456789' 0.000000001 -> '1231234555555555555555555567456789' Inexact Rounded 356 dqsub502 subtract '1231234555555555555555555567456789' 0.000001 -> '1231234555555555555555555567456789' Inexact Rounded 357 dqsub503 subtract '1231234555555555555555555567456789' 0.1 -> '1231234555555555555555555567456789' Inexact Rounded 358 dqsub504 subtract '1231234555555555555555555567456789' 0.4 -> '1231234555555555555555555567456789' Inexact Rounded 359 dqsub505 subtract '1231234555555555555555555567456789' 0.49 -> '1231234555555555555555555567456789' Inexact Rounded 360 dqsub506 subtract '1231234555555555555555555567456789' 0.499999 -> '1231234555555555555555555567456789' Inexact Rounded 361 dqsub507 subtract '1231234555555555555555555567456789' 0.499999999 -> '1231234555555555555555555567456789' Inexact Rounded 362 dqsub508 subtract '1231234555555555555555555567456789' 0.5 -> '1231234555555555555555555567456789' Inexact Rounded 363 dqsub509 subtract '1231234555555555555555555567456789' 0.500000001 -> '1231234555555555555555555567456788' Inexact Rounded 364 dqsub510 subtract '1231234555555555555555555567456789' 0.500001 -> '1231234555555555555555555567456788' Inexact Rounded 365 dqsub511 subtract '1231234555555555555555555567456789' 0.51 -> '1231234555555555555555555567456788' Inexact Rounded 366 dqsub512 subtract '1231234555555555555555555567456789' 0.6 -> '1231234555555555555555555567456788' Inexact Rounded 367 dqsub513 subtract '1231234555555555555555555567456789' 0.9 -> '1231234555555555555555555567456788' Inexact Rounded 368 dqsub514 subtract '1231234555555555555555555567456789' 0.99999 -> '1231234555555555555555555567456788' Inexact Rounded 369 dqsub515 subtract '1231234555555555555555555567456789' 0.999999999 -> '1231234555555555555555555567456788' Inexact Rounded 370 dqsub516 subtract '1231234555555555555555555567456789' 1 -> '1231234555555555555555555567456788' 371 dqsub517 subtract '1231234555555555555555555567456789' 1.000000001 -> '1231234555555555555555555567456788' Inexact Rounded 372 dqsub518 subtract '1231234555555555555555555567456789' 1.00001 -> '1231234555555555555555555567456788' Inexact Rounded 373 dqsub519 subtract '1231234555555555555555555567456789' 1.1 -> '1231234555555555555555555567456788' Inexact Rounded 374 375 rounding: half_even 376 dqsub520 subtract '1231234555555555555555555567456789' 0 -> '1231234555555555555555555567456789' 377 dqsub521 subtract '1231234555555555555555555567456789' 0.000000001 -> '1231234555555555555555555567456789' Inexact Rounded 378 dqsub522 subtract '1231234555555555555555555567456789' 0.000001 -> '1231234555555555555555555567456789' Inexact Rounded 379 dqsub523 subtract '1231234555555555555555555567456789' 0.1 -> '1231234555555555555555555567456789' Inexact Rounded 380 dqsub524 subtract '1231234555555555555555555567456789' 0.4 -> '1231234555555555555555555567456789' Inexact Rounded 381 dqsub525 subtract '1231234555555555555555555567456789' 0.49 -> '1231234555555555555555555567456789' Inexact Rounded 382 dqsub526 subtract '1231234555555555555555555567456789' 0.499999 -> '1231234555555555555555555567456789' Inexact Rounded 383 dqsub527 subtract '1231234555555555555555555567456789' 0.499999999 -> '1231234555555555555555555567456789' Inexact Rounded 384 dqsub528 subtract '1231234555555555555555555567456789' 0.5 -> '1231234555555555555555555567456788' Inexact Rounded 385 dqsub529 subtract '1231234555555555555555555567456789' 0.500000001 -> '1231234555555555555555555567456788' Inexact Rounded 386 dqsub530 subtract '1231234555555555555555555567456789' 0.500001 -> '1231234555555555555555555567456788' Inexact Rounded 387 dqsub531 subtract '1231234555555555555555555567456789' 0.51 -> '1231234555555555555555555567456788' Inexact Rounded 388 dqsub532 subtract '1231234555555555555555555567456789' 0.6 -> '1231234555555555555555555567456788' Inexact Rounded 389 dqsub533 subtract '1231234555555555555555555567456789' 0.9 -> '1231234555555555555555555567456788' Inexact Rounded 390 dqsub534 subtract '1231234555555555555555555567456789' 0.99999 -> '1231234555555555555555555567456788' Inexact Rounded 391 dqsub535 subtract '1231234555555555555555555567456789' 0.999999999 -> '1231234555555555555555555567456788' Inexact Rounded 392 dqsub536 subtract '1231234555555555555555555567456789' 1 -> '1231234555555555555555555567456788' 393 dqsub537 subtract '1231234555555555555555555567456789' 1.00000001 -> '1231234555555555555555555567456788' Inexact Rounded 394 dqsub538 subtract '1231234555555555555555555567456789' 1.00001 -> '1231234555555555555555555567456788' Inexact Rounded 395 dqsub539 subtract '1231234555555555555555555567456789' 1.1 -> '1231234555555555555555555567456788' Inexact Rounded 396 -- critical few with even bottom digit... 397 dqsub540 subtract '1231234555555555555555555567456788' 0.499999999 -> '1231234555555555555555555567456788' Inexact Rounded 398 dqsub541 subtract '1231234555555555555555555567456788' 0.5 -> '1231234555555555555555555567456788' Inexact Rounded 399 dqsub542 subtract '1231234555555555555555555567456788' 0.500000001 -> '1231234555555555555555555567456787' Inexact Rounded 400 401 rounding: down 402 dqsub550 subtract '1231234555555555555555555567456789' 0 -> '1231234555555555555555555567456789' 403 dqsub551 subtract '1231234555555555555555555567456789' 0.000000001 -> '1231234555555555555555555567456788' Inexact Rounded 404 dqsub552 subtract '1231234555555555555555555567456789' 0.000001 -> '1231234555555555555555555567456788' Inexact Rounded 405 dqsub553 subtract '1231234555555555555555555567456789' 0.1 -> '1231234555555555555555555567456788' Inexact Rounded 406 dqsub554 subtract '1231234555555555555555555567456789' 0.4 -> '1231234555555555555555555567456788' Inexact Rounded 407 dqsub555 subtract '1231234555555555555555555567456789' 0.49 -> '1231234555555555555555555567456788' Inexact Rounded 408 dqsub556 subtract '1231234555555555555555555567456789' 0.499999 -> '1231234555555555555555555567456788' Inexact Rounded 409 dqsub557 subtract '1231234555555555555555555567456789' 0.499999999 -> '1231234555555555555555555567456788' Inexact Rounded 410 dqsub558 subtract '1231234555555555555555555567456789' 0.5 -> '1231234555555555555555555567456788' Inexact Rounded 411 dqsub559 subtract '1231234555555555555555555567456789' 0.500000001 -> '1231234555555555555555555567456788' Inexact Rounded 412 dqsub560 subtract '1231234555555555555555555567456789' 0.500001 -> '1231234555555555555555555567456788' Inexact Rounded 413 dqsub561 subtract '1231234555555555555555555567456789' 0.51 -> '1231234555555555555555555567456788' Inexact Rounded 414 dqsub562 subtract '1231234555555555555555555567456789' 0.6 -> '1231234555555555555555555567456788' Inexact Rounded 415 dqsub563 subtract '1231234555555555555555555567456789' 0.9 -> '1231234555555555555555555567456788' Inexact Rounded 416 dqsub564 subtract '1231234555555555555555555567456789' 0.99999 -> '1231234555555555555555555567456788' Inexact Rounded 417 dqsub565 subtract '1231234555555555555555555567456789' 0.999999999 -> '1231234555555555555555555567456788' Inexact Rounded 418 dqsub566 subtract '1231234555555555555555555567456789' 1 -> '1231234555555555555555555567456788' 419 dqsub567 subtract '1231234555555555555555555567456789' 1.00000001 -> '1231234555555555555555555567456787' Inexact Rounded 420 dqsub568 subtract '1231234555555555555555555567456789' 1.00001 -> '1231234555555555555555555567456787' Inexact Rounded 421 dqsub569 subtract '1231234555555555555555555567456789' 1.1 -> '1231234555555555555555555567456787' Inexact Rounded 422 423 -- symmetry... 424 rounding: half_up 425 dqsub600 subtract 0 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' 426 dqsub601 subtract 0.000000001 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded 427 dqsub602 subtract 0.000001 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded 428 dqsub603 subtract 0.1 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded 429 dqsub604 subtract 0.4 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded 430 dqsub605 subtract 0.49 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded 431 dqsub606 subtract 0.499999 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded 432 dqsub607 subtract 0.499999999 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded 433 dqsub608 subtract 0.5 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded 434 dqsub609 subtract 0.500000001 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 435 dqsub610 subtract 0.500001 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 436 dqsub611 subtract 0.51 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 437 dqsub612 subtract 0.6 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 438 dqsub613 subtract 0.9 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 439 dqsub614 subtract 0.99999 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 440 dqsub615 subtract 0.999999999 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 441 dqsub616 subtract 1 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' 442 dqsub617 subtract 1.000000001 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 443 dqsub618 subtract 1.00001 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 444 dqsub619 subtract 1.1 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 445 446 rounding: half_even 447 dqsub620 subtract 0 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' 448 dqsub621 subtract 0.000000001 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded 449 dqsub622 subtract 0.000001 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded 450 dqsub623 subtract 0.1 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded 451 dqsub624 subtract 0.4 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded 452 dqsub625 subtract 0.49 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded 453 dqsub626 subtract 0.499999 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded 454 dqsub627 subtract 0.499999999 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded 455 dqsub628 subtract 0.5 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 456 dqsub629 subtract 0.500000001 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 457 dqsub630 subtract 0.500001 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 458 dqsub631 subtract 0.51 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 459 dqsub632 subtract 0.6 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 460 dqsub633 subtract 0.9 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 461 dqsub634 subtract 0.99999 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 462 dqsub635 subtract 0.999999999 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 463 dqsub636 subtract 1 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' 464 dqsub637 subtract 1.00000001 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 465 dqsub638 subtract 1.00001 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 466 dqsub639 subtract 1.1 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 467 -- critical few with even bottom digit... 468 dqsub640 subtract 0.499999999 '1231234555555555555555555567456788' -> '-1231234555555555555555555567456788' Inexact Rounded 469 dqsub641 subtract 0.5 '1231234555555555555555555567456788' -> '-1231234555555555555555555567456788' Inexact Rounded 470 dqsub642 subtract 0.500000001 '1231234555555555555555555567456788' -> '-1231234555555555555555555567456787' Inexact Rounded 471 472 rounding: down 473 dqsub650 subtract 0 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' 474 dqsub651 subtract 0.000000001 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 475 dqsub652 subtract 0.000001 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 476 dqsub653 subtract 0.1 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 477 dqsub654 subtract 0.4 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 478 dqsub655 subtract 0.49 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 479 dqsub656 subtract 0.499999 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 480 dqsub657 subtract 0.499999999 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 481 dqsub658 subtract 0.5 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 482 dqsub659 subtract 0.500000001 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 483 dqsub660 subtract 0.500001 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 484 dqsub661 subtract 0.51 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 485 dqsub662 subtract 0.6 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 486 dqsub663 subtract 0.9 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 487 dqsub664 subtract 0.99999 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 488 dqsub665 subtract 0.999999999 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded 489 dqsub666 subtract 1 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' 490 dqsub667 subtract 1.00000001 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456787' Inexact Rounded 491 dqsub668 subtract 1.00001 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456787' Inexact Rounded 492 dqsub669 subtract 1.1 '1231234555555555555555555567456789' -> '-1231234555555555555555555567456787' Inexact Rounded 493 494 495 -- lots of leading zeros in intermediate result, and showing effects of 496 -- input rounding would have affected the following 497 rounding: half_up 498 dqsub670 subtract '1234567456789' '1234567456788.1' -> 0.9 499 dqsub671 subtract '1234567456789' '1234567456788.9' -> 0.1 500 dqsub672 subtract '1234567456789' '1234567456789.1' -> -0.1 501 dqsub673 subtract '1234567456789' '1234567456789.5' -> -0.5 502 dqsub674 subtract '1234567456789' '1234567456789.9' -> -0.9 503 504 rounding: half_even 505 dqsub680 subtract '1234567456789' '1234567456788.1' -> 0.9 506 dqsub681 subtract '1234567456789' '1234567456788.9' -> 0.1 507 dqsub682 subtract '1234567456789' '1234567456789.1' -> -0.1 508 dqsub683 subtract '1234567456789' '1234567456789.5' -> -0.5 509 dqsub684 subtract '1234567456789' '1234567456789.9' -> -0.9 510 511 dqsub685 subtract '1234567456788' '1234567456787.1' -> 0.9 512 dqsub686 subtract '1234567456788' '1234567456787.9' -> 0.1 513 dqsub687 subtract '1234567456788' '1234567456788.1' -> -0.1 514 dqsub688 subtract '1234567456788' '1234567456788.5' -> -0.5 515 dqsub689 subtract '1234567456788' '1234567456788.9' -> -0.9 516 517 rounding: down 518 dqsub690 subtract '1234567456789' '1234567456788.1' -> 0.9 519 dqsub691 subtract '1234567456789' '1234567456788.9' -> 0.1 520 dqsub692 subtract '1234567456789' '1234567456789.1' -> -0.1 521 dqsub693 subtract '1234567456789' '1234567456789.5' -> -0.5 522 dqsub694 subtract '1234567456789' '1234567456789.9' -> -0.9 523 524 -- Specials 525 dqsub780 subtract -Inf Inf -> -Infinity 526 dqsub781 subtract -Inf 1000 -> -Infinity 527 dqsub782 subtract -Inf 1 -> -Infinity 528 dqsub783 subtract -Inf -0 -> -Infinity 529 dqsub784 subtract -Inf -1 -> -Infinity 530 dqsub785 subtract -Inf -1000 -> -Infinity 531 dqsub787 subtract -1000 Inf -> -Infinity 532 dqsub788 subtract -Inf Inf -> -Infinity 533 dqsub789 subtract -1 Inf -> -Infinity 534 dqsub790 subtract 0 Inf -> -Infinity 535 dqsub791 subtract 1 Inf -> -Infinity 536 dqsub792 subtract 1000 Inf -> -Infinity 537 538 dqsub800 subtract Inf Inf -> NaN Invalid_operation 539 dqsub801 subtract Inf 1000 -> Infinity 540 dqsub802 subtract Inf 1 -> Infinity 541 dqsub803 subtract Inf 0 -> Infinity 542 dqsub804 subtract Inf -0 -> Infinity 543 dqsub805 subtract Inf -1 -> Infinity 544 dqsub806 subtract Inf -1000 -> Infinity 545 dqsub807 subtract Inf -Inf -> Infinity 546 dqsub808 subtract -1000 -Inf -> Infinity 547 dqsub809 subtract -Inf -Inf -> NaN Invalid_operation 548 dqsub810 subtract -1 -Inf -> Infinity 549 dqsub811 subtract -0 -Inf -> Infinity 550 dqsub812 subtract 0 -Inf -> Infinity 551 dqsub813 subtract 1 -Inf -> Infinity 552 dqsub814 subtract 1000 -Inf -> Infinity 553 dqsub815 subtract Inf -Inf -> Infinity 554 555 dqsub821 subtract NaN Inf -> NaN 556 dqsub822 subtract -NaN 1000 -> -NaN 557 dqsub823 subtract NaN 1 -> NaN 558 dqsub824 subtract NaN 0 -> NaN 559 dqsub825 subtract NaN -0 -> NaN 560 dqsub826 subtract NaN -1 -> NaN 561 dqsub827 subtract NaN -1000 -> NaN 562 dqsub828 subtract NaN -Inf -> NaN 563 dqsub829 subtract -NaN NaN -> -NaN 564 dqsub830 subtract -Inf NaN -> NaN 565 dqsub831 subtract -1000 NaN -> NaN 566 dqsub832 subtract -1 NaN -> NaN 567 dqsub833 subtract -0 NaN -> NaN 568 dqsub834 subtract 0 NaN -> NaN 569 dqsub835 subtract 1 NaN -> NaN 570 dqsub836 subtract 1000 -NaN -> -NaN 571 dqsub837 subtract Inf NaN -> NaN 572 573 dqsub841 subtract sNaN Inf -> NaN Invalid_operation 574 dqsub842 subtract -sNaN 1000 -> -NaN Invalid_operation 575 dqsub843 subtract sNaN 1 -> NaN Invalid_operation 576 dqsub844 subtract sNaN 0 -> NaN Invalid_operation 577 dqsub845 subtract sNaN -0 -> NaN Invalid_operation 578 dqsub846 subtract sNaN -1 -> NaN Invalid_operation 579 dqsub847 subtract sNaN -1000 -> NaN Invalid_operation 580 dqsub848 subtract sNaN NaN -> NaN Invalid_operation 581 dqsub849 subtract sNaN sNaN -> NaN Invalid_operation 582 dqsub850 subtract NaN sNaN -> NaN Invalid_operation 583 dqsub851 subtract -Inf -sNaN -> -NaN Invalid_operation 584 dqsub852 subtract -1000 sNaN -> NaN Invalid_operation 585 dqsub853 subtract -1 sNaN -> NaN Invalid_operation 586 dqsub854 subtract -0 sNaN -> NaN Invalid_operation 587 dqsub855 subtract 0 sNaN -> NaN Invalid_operation 588 dqsub856 subtract 1 sNaN -> NaN Invalid_operation 589 dqsub857 subtract 1000 sNaN -> NaN Invalid_operation 590 dqsub858 subtract Inf sNaN -> NaN Invalid_operation 591 dqsub859 subtract NaN sNaN -> NaN Invalid_operation 592 593 -- propagating NaNs 594 dqsub861 subtract NaN01 -Inf -> NaN1 595 dqsub862 subtract -NaN02 -1000 -> -NaN2 596 dqsub863 subtract NaN03 1000 -> NaN3 597 dqsub864 subtract NaN04 Inf -> NaN4 598 dqsub865 subtract NaN05 NaN61 -> NaN5 599 dqsub866 subtract -Inf -NaN71 -> -NaN71 600 dqsub867 subtract -1000 NaN81 -> NaN81 601 dqsub868 subtract 1000 NaN91 -> NaN91 602 dqsub869 subtract Inf NaN101 -> NaN101 603 dqsub871 subtract sNaN011 -Inf -> NaN11 Invalid_operation 604 dqsub872 subtract sNaN012 -1000 -> NaN12 Invalid_operation 605 dqsub873 subtract -sNaN013 1000 -> -NaN13 Invalid_operation 606 dqsub874 subtract sNaN014 NaN171 -> NaN14 Invalid_operation 607 dqsub875 subtract sNaN015 sNaN181 -> NaN15 Invalid_operation 608 dqsub876 subtract NaN016 sNaN191 -> NaN191 Invalid_operation 609 dqsub877 subtract -Inf sNaN201 -> NaN201 Invalid_operation 610 dqsub878 subtract -1000 sNaN211 -> NaN211 Invalid_operation 611 dqsub879 subtract 1000 -sNaN221 -> -NaN221 Invalid_operation 612 dqsub880 subtract Inf sNaN231 -> NaN231 Invalid_operation 613 dqsub881 subtract NaN025 sNaN241 -> NaN241 Invalid_operation 614 615 -- edge case spills 616 dqsub901 subtract 2.E-3 1.002 -> -1.000 617 dqsub902 subtract 2.0E-3 1.002 -> -1.0000 618 dqsub903 subtract 2.00E-3 1.0020 -> -1.00000 619 dqsub904 subtract 2.000E-3 1.00200 -> -1.000000 620 dqsub905 subtract 2.0000E-3 1.002000 -> -1.0000000 621 dqsub906 subtract 2.00000E-3 1.0020000 -> -1.00000000 622 dqsub907 subtract 2.000000E-3 1.00200000 -> -1.000000000 623 dqsub908 subtract 2.0000000E-3 1.002000000 -> -1.0000000000 624 625 -- subnormals and overflows covered under Add 626 627 -- Examples from SQL proposal (Krishna Kulkarni) 628 dqsub1125 subtract 130E-2 120E-2 -> 0.10 629 dqsub1126 subtract 130E-2 12E-1 -> 0.10 630 dqsub1127 subtract 130E-2 1E0 -> 0.30 631 dqsub1128 subtract 1E2 1E4 -> -9.9E+3 632 633 -- Null tests 634 dqsub9990 subtract 10 # -> NaN Invalid_operation 635 dqsub9991 subtract # 10 -> NaN Invalid_operation 636
