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/Lib/test/decimaltestdata/divide.decTest

http://unladen-swallow.googlecode.com/
Unknown | 854 lines | 783 code | 71 blank | 0 comment | 0 complexity | a2d62aeefacabfca04e03ca12b3b0d0a MD5 | raw file
  1------------------------------------------------------------------------
  2-- divide.decTest -- decimal division                                 --
  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@uk.ibm.com                                                   --
 19------------------------------------------------------------------------
 20version: 2.58
 21
 22extended:    1
 23precision:   9
 24rounding:    half_up
 25maxExponent: 384
 26minexponent: -383
 27
 28-- sanity checks
 29divx001 divide  1     1    ->  1
 30divx002 divide  2     1    ->  2
 31divx003 divide  1     2    ->  0.5
 32divx004 divide  2     2    ->  1
 33divx005 divide  0     1    ->  0
 34divx006 divide  0     2    ->  0
 35divx007 divide  1     3    ->  0.333333333 Inexact Rounded
 36divx008 divide  2     3    ->  0.666666667 Inexact Rounded
 37divx009 divide  3     3    ->  1
 38
 39divx010 divide  2.4   1    ->  2.4
 40divx011 divide  2.4   -1   ->  -2.4
 41divx012 divide  -2.4  1    ->  -2.4
 42divx013 divide  -2.4  -1   ->  2.4
 43divx014 divide  2.40  1    ->  2.40
 44divx015 divide  2.400 1    ->  2.400
 45divx016 divide  2.4   2    ->  1.2
 46divx017 divide  2.400 2    ->  1.200
 47divx018 divide  2.    2    ->  1
 48divx019 divide  20    20   ->  1
 49
 50divx020 divide  187   187    ->  1
 51divx021 divide  5     2      ->  2.5
 52divx022 divide  50    20     ->  2.5
 53divx023 divide  500   200    ->  2.5
 54divx024 divide  50.0  20.0   ->  2.5
 55divx025 divide  5.00  2.00   ->  2.5
 56divx026 divide  5     2.0    ->  2.5
 57divx027 divide  5     2.000  ->  2.5
 58divx028 divide  5     0.20   ->  25
 59divx029 divide  5     0.200  ->  25
 60divx030 divide  10    1      ->  10
 61divx031 divide  100   1      ->  100
 62divx032 divide  1000  1      ->  1000
 63divx033 divide  1000  100    ->  10
 64
 65divx035 divide  1     2      ->  0.5
 66divx036 divide  1     4      ->  0.25
 67divx037 divide  1     8      ->  0.125
 68divx038 divide  1     16     ->  0.0625
 69divx039 divide  1     32     ->  0.03125
 70divx040 divide  1     64     ->  0.015625
 71divx041 divide  1    -2      ->  -0.5
 72divx042 divide  1    -4      ->  -0.25
 73divx043 divide  1    -8      ->  -0.125
 74divx044 divide  1    -16     ->  -0.0625
 75divx045 divide  1    -32     ->  -0.03125
 76divx046 divide  1    -64     ->  -0.015625
 77divx047 divide -1     2      ->  -0.5
 78divx048 divide -1     4      ->  -0.25
 79divx049 divide -1     8      ->  -0.125
 80divx050 divide -1     16     ->  -0.0625
 81divx051 divide -1     32     ->  -0.03125
 82divx052 divide -1     64     ->  -0.015625
 83divx053 divide -1    -2      ->  0.5
 84divx054 divide -1    -4      ->  0.25
 85divx055 divide -1    -8      ->  0.125
 86divx056 divide -1    -16     ->  0.0625
 87divx057 divide -1    -32     ->  0.03125
 88divx058 divide -1    -64     ->  0.015625
 89
 90divx070 divide  999999999        1    ->  999999999
 91divx071 divide  999999999.4      1    ->  999999999 Inexact Rounded
 92divx072 divide  999999999.5      1    ->  1.00000000E+9 Inexact Rounded
 93divx073 divide  999999999.9      1    ->  1.00000000E+9 Inexact Rounded
 94divx074 divide  999999999.999    1    ->  1.00000000E+9 Inexact Rounded
 95precision: 6
 96divx080 divide  999999999     1  ->  1.00000E+9 Inexact Rounded
 97divx081 divide  99999999      1  ->  1.00000E+8 Inexact Rounded
 98divx082 divide  9999999       1  ->  1.00000E+7 Inexact Rounded
 99divx083 divide  999999        1  ->  999999
100divx084 divide  99999         1  ->  99999
101divx085 divide  9999          1  ->  9999
102divx086 divide  999           1  ->  999
103divx087 divide  99            1  ->  99
104divx088 divide  9             1  ->  9
105
106precision: 9
107divx090 divide  0.            1    ->  0
108divx091 divide  .0            1    ->  0.0
109divx092 divide  0.00          1    ->  0.00
110divx093 divide  0.00E+9       1    ->  0E+7
111divx094 divide  0.0000E-50    1    ->  0E-54
112
113divx095 divide  1            1E-8  ->  1E+8
114divx096 divide  1            1E-9  ->  1E+9
115divx097 divide  1            1E-10 ->  1E+10
116divx098 divide  1            1E-11 ->  1E+11
117divx099 divide  1            1E-12 ->  1E+12
118
119divx100 divide  1  1   -> 1
120divx101 divide  1  2   -> 0.5
121divx102 divide  1  3   -> 0.333333333 Inexact Rounded
122divx103 divide  1  4   -> 0.25
123divx104 divide  1  5   -> 0.2
124divx105 divide  1  6   -> 0.166666667 Inexact Rounded
125divx106 divide  1  7   -> 0.142857143 Inexact Rounded
126divx107 divide  1  8   -> 0.125
127divx108 divide  1  9   -> 0.111111111 Inexact Rounded
128divx109 divide  1  10  -> 0.1
129divx110 divide  1  1   -> 1
130divx111 divide  2  1   -> 2
131divx112 divide  3  1   -> 3
132divx113 divide  4  1   -> 4
133divx114 divide  5  1   -> 5
134divx115 divide  6  1   -> 6
135divx116 divide  7  1   -> 7
136divx117 divide  8  1   -> 8
137divx118 divide  9  1   -> 9
138divx119 divide  10 1   -> 10
139
140divx120 divide  3E+1 0.001  -> 3E+4
141divx121 divide  2.200 2     -> 1.100
142
143divx130 divide  12345  4.999  ->  2469.49390 Inexact Rounded
144divx131 divide  12345  4.99   ->  2473.94790 Inexact Rounded
145divx132 divide  12345  4.9    ->  2519.38776 Inexact Rounded
146divx133 divide  12345  5      ->  2469
147divx134 divide  12345  5.1    ->  2420.58824 Inexact Rounded
148divx135 divide  12345  5.01   ->  2464.07186 Inexact Rounded
149divx136 divide  12345  5.001  ->  2468.50630 Inexact Rounded
150
151precision:   9
152maxexponent: 999999999
153minexponent: -999999999
154
155-- test possibly imprecise results
156divx220 divide 391   597 ->  0.654941374 Inexact Rounded
157divx221 divide 391  -597 -> -0.654941374 Inexact Rounded
158divx222 divide -391  597 -> -0.654941374 Inexact Rounded
159divx223 divide -391 -597 ->  0.654941374 Inexact Rounded
160
161-- test some cases that are close to exponent overflow
162maxexponent: 999999999
163minexponent: -999999999
164divx270 divide 1 1e999999999    -> 1E-999999999
165divx271 divide 1 0.9e999999999  -> 1.11111111E-999999999 Inexact Rounded
166divx272 divide 1 0.99e999999999 -> 1.01010101E-999999999 Inexact Rounded
167divx273 divide 1 0.999999999e999999999 -> 1.00000000E-999999999 Inexact Rounded
168divx274 divide 9e999999999    1 -> 9E+999999999
169divx275 divide 9.9e999999999  1 -> 9.9E+999999999
170divx276 divide 9.99e999999999 1 -> 9.99E+999999999
171divx277 divide 9.99999999e999999999 1 -> 9.99999999E+999999999
172
173divx280 divide 0.1 9e-999999999   -> 1.11111111E+999999997 Inexact Rounded
174divx281 divide 0.1 99e-999999999  -> 1.01010101E+999999996 Inexact Rounded
175divx282 divide 0.1 999e-999999999 -> 1.00100100E+999999995 Inexact Rounded
176
177divx283 divide 0.1 9e-999999998     -> 1.11111111E+999999996 Inexact Rounded
178divx284 divide 0.1 99e-999999998    -> 1.01010101E+999999995 Inexact Rounded
179divx285 divide 0.1 999e-999999998   -> 1.00100100E+999999994 Inexact Rounded
180divx286 divide 0.1 999e-999999997   -> 1.00100100E+999999993 Inexact Rounded
181divx287 divide 0.1 9999e-999999997  -> 1.00010001E+999999992 Inexact Rounded
182divx288 divide 0.1 99999e-999999997 -> 1.00001000E+999999991 Inexact Rounded
183
184-- Divide into 0 tests
185
186divx301 divide    0    7     -> 0
187divx302 divide    0    7E-5  -> 0E+5
188divx303 divide    0    7E-1  -> 0E+1
189divx304 divide    0    7E+1  -> 0.0
190divx305 divide    0    7E+5  -> 0.00000
191divx306 divide    0    7E+6  -> 0.000000
192divx307 divide    0    7E+7  -> 0E-7
193divx308 divide    0   70E-5  -> 0E+5
194divx309 divide    0   70E-1  -> 0E+1
195divx310 divide    0   70E+0  -> 0
196divx311 divide    0   70E+1  -> 0.0
197divx312 divide    0   70E+5  -> 0.00000
198divx313 divide    0   70E+6  -> 0.000000
199divx314 divide    0   70E+7  -> 0E-7
200divx315 divide    0  700E-5  -> 0E+5
201divx316 divide    0  700E-1  -> 0E+1
202divx317 divide    0  700E+0  -> 0
203divx318 divide    0  700E+1  -> 0.0
204divx319 divide    0  700E+5  -> 0.00000
205divx320 divide    0  700E+6  -> 0.000000
206divx321 divide    0  700E+7  -> 0E-7
207divx322 divide    0  700E+77 -> 0E-77
208
209divx331 divide 0E-3    7E-5  -> 0E+2
210divx332 divide 0E-3    7E-1  -> 0.00
211divx333 divide 0E-3    7E+1  -> 0.0000
212divx334 divide 0E-3    7E+5  -> 0E-8
213divx335 divide 0E-1    7E-5  -> 0E+4
214divx336 divide 0E-1    7E-1  -> 0
215divx337 divide 0E-1    7E+1  -> 0.00
216divx338 divide 0E-1    7E+5  -> 0.000000
217divx339 divide 0E+1    7E-5  -> 0E+6
218divx340 divide 0E+1    7E-1  -> 0E+2
219divx341 divide 0E+1    7E+1  -> 0
220divx342 divide 0E+1    7E+5  -> 0.0000
221divx343 divide 0E+3    7E-5  -> 0E+8
222divx344 divide 0E+3    7E-1  -> 0E+4
223divx345 divide 0E+3    7E+1  -> 0E+2
224divx346 divide 0E+3    7E+5  -> 0.00
225
226maxexponent: 92
227minexponent: -92
228precision:    7
229divx351 divide 0E-92   7E-1  -> 0E-91
230divx352 divide 0E-92   7E+1  -> 0E-93
231divx353 divide 0E-92   7E+5  -> 0E-97
232divx354 divide 0E-92   7E+6  -> 0E-98
233divx355 divide 0E-92   7E+7  -> 0E-98 Clamped
234divx356 divide 0E-92 777E-1  -> 0E-91
235divx357 divide 0E-92 777E+1  -> 0E-93
236divx358 divide 0E-92 777E+3  -> 0E-95
237divx359 divide 0E-92 777E+4  -> 0E-96
238divx360 divide 0E-92 777E+5  -> 0E-97
239divx361 divide 0E-92 777E+6  -> 0E-98
240divx362 divide 0E-92 777E+7  -> 0E-98 Clamped
241divx363 divide 0E-92   7E+92 -> 0E-98 Clamped
242
243divx371 divide 0E-92 700E-1  -> 0E-91
244divx372 divide 0E-92 700E+1  -> 0E-93
245divx373 divide 0E-92 700E+3  -> 0E-95
246divx374 divide 0E-92 700E+4  -> 0E-96
247divx375 divide 0E-92 700E+5  -> 0E-97
248divx376 divide 0E-92 700E+6  -> 0E-98
249divx377 divide 0E-92 700E+7  -> 0E-98 Clamped
250
251divx381 divide 0E+92   7E+1  -> 0E+91
252divx382 divide 0E+92   7E+0  -> 0E+92
253divx383 divide 0E+92   7E-1  -> 0E+92 Clamped
254divx384 divide 0E+90 777E+1  -> 0E+89
255divx385 divide 0E+90 777E-1  -> 0E+91
256divx386 divide 0E+90 777E-2  -> 0E+92
257divx387 divide 0E+90 777E-3  -> 0E+92 Clamped
258divx388 divide 0E+90 777E-4  -> 0E+92 Clamped
259
260divx391 divide 0E+90 700E+1  -> 0E+89
261divx392 divide 0E+90 700E-1  -> 0E+91
262divx393 divide 0E+90 700E-2  -> 0E+92
263divx394 divide 0E+90 700E-3  -> 0E+92 Clamped
264divx395 divide 0E+90 700E-4  -> 0E+92 Clamped
265
266-- input rounding checks
267maxexponent: 999
268minexponent: -999
269precision: 9
270divx401 divide 12345678000 1 -> 1.23456780E+10 Rounded
271divx402 divide 1 12345678000 -> 8.10000066E-11 Inexact Rounded
272divx403 divide 1234567800  1 -> 1.23456780E+9  Rounded
273divx404 divide 1 1234567800  -> 8.10000066E-10 Inexact Rounded
274divx405 divide 1234567890  1 -> 1.23456789E+9  Rounded
275divx406 divide 1 1234567890  -> 8.10000007E-10 Inexact Rounded
276divx407 divide 1234567891  1 -> 1.23456789E+9  Inexact Rounded
277divx408 divide 1 1234567891  -> 8.10000007E-10 Inexact Rounded
278divx409 divide 12345678901 1 -> 1.23456789E+10 Inexact Rounded
279divx410 divide 1 12345678901 -> 8.10000007E-11 Inexact Rounded
280divx411 divide 1234567896  1 -> 1.23456790E+9  Inexact Rounded
281divx412 divide 1 1234567896  -> 8.10000003E-10 Inexact Rounded
282divx413 divide 1 1234567897  -> 8.10000003E-10 Inexact Rounded
283divx414 divide 1 1234567898  -> 8.10000002E-10 Inexact Rounded
284divx415 divide 1 1234567899  -> 8.10000001E-10 Inexact Rounded
285divx416 divide 1 1234567900  -> 8.10000001E-10 Inexact Rounded
286divx417 divide 1 1234567901  -> 8.10000000E-10 Inexact Rounded
287divx418 divide 1 1234567902  -> 8.09999999E-10 Inexact Rounded
288-- some longies
289divx421 divide 1234567896.000000000000  1 -> 1.23456790E+9  Inexact Rounded
290divx422 divide 1 1234567896.000000000000  -> 8.10000003E-10 Inexact Rounded
291divx423 divide 1234567896.000000000001  1 -> 1.23456790E+9  Inexact Rounded
292divx424 divide 1 1234567896.000000000001  -> 8.10000003E-10 Inexact Rounded
293divx425 divide 1234567896.000000000000000000000000000000000000000009  1 -> 1.23456790E+9  Inexact Rounded
294divx426 divide 1 1234567896.000000000000000000000000000000000000000009  -> 8.10000003E-10 Inexact Rounded
295divx427 divide 1234567897.900010000000000000000000000000000000000009  1 -> 1.23456790E+9  Inexact Rounded
296divx428 divide 1 1234567897.900010000000000000000000000000000000000009  -> 8.10000002E-10 Inexact Rounded
297
298precision: 15
299-- still checking...
300divx441 divide 12345678000 1 -> 12345678000
301divx442 divide 1 12345678000 -> 8.10000066420005E-11 Inexact Rounded
302divx443 divide 1234567800  1 -> 1234567800
303divx444 divide 1 1234567800  -> 8.10000066420005E-10 Inexact Rounded
304divx445 divide 1234567890  1 -> 1234567890
305divx446 divide 1 1234567890  -> 8.10000007371000E-10 Inexact Rounded
306divx447 divide 1234567891  1 -> 1234567891
307divx448 divide 1 1234567891  -> 8.10000006714900E-10 Inexact Rounded
308divx449 divide 12345678901 1 -> 12345678901
309divx450 divide 1 12345678901 -> 8.10000007305390E-11 Inexact Rounded
310divx451 divide 1234567896  1 -> 1234567896
311divx452 divide 1 1234567896  -> 8.10000003434400E-10 Inexact Rounded
312
313-- high-lows
314divx453 divide 1e+1   1    ->   1E+1
315divx454 divide 1e+1   1.0  ->   1E+1
316divx455 divide 1e+1   1.00 ->   1E+1
317divx456 divide 1e+2   2    ->   5E+1
318divx457 divide 1e+2   2.0  ->   5E+1
319divx458 divide 1e+2   2.00 ->   5E+1
320
321-- some from IEEE discussions
322divx460 divide 3e0      2e0     -> 1.5
323divx461 divide 30e-1    2e0     -> 1.5
324divx462 divide 300e-2   2e0     -> 1.50
325divx464 divide 3000e-3  2e0     -> 1.500
326divx465 divide 3e0      20e-1   -> 1.5
327divx466 divide 30e-1    20e-1   -> 1.5
328divx467 divide 300e-2   20e-1   -> 1.5
329divx468 divide 3000e-3  20e-1   -> 1.50
330divx469 divide 3e0      200e-2  -> 1.5
331divx470 divide 30e-1    200e-2  -> 1.5
332divx471 divide 300e-2   200e-2  -> 1.5
333divx472 divide 3000e-3  200e-2  -> 1.5
334divx473 divide 3e0      2000e-3 -> 1.5
335divx474 divide 30e-1    2000e-3 -> 1.5
336divx475 divide 300e-2   2000e-3 -> 1.5
337divx476 divide 3000e-3  2000e-3 -> 1.5
338
339-- some reciprocals
340divx480 divide 1        1.0E+33 -> 1E-33
341divx481 divide 1        10E+33  -> 1E-34
342divx482 divide 1        1.0E-33 -> 1E+33
343divx483 divide 1        10E-33  -> 1E+32
344
345-- RMS discussion table
346maxexponent:  96
347minexponent: -95
348precision:     7
349
350divx484 divide 0e5     1e3 ->   0E+2
351divx485 divide 0e5     2e3 ->   0E+2
352divx486 divide 0e5    10e2 ->   0E+3
353divx487 divide 0e5    20e2 ->   0E+3
354divx488 divide 0e5   100e1 ->   0E+4
355divx489 divide 0e5   200e1 ->   0E+4
356
357divx491 divide 1e5     1e3 ->   1E+2
358divx492 divide 1e5     2e3 ->   5E+1
359divx493 divide 1e5    10e2 ->   1E+2
360divx494 divide 1e5    20e2 ->   5E+1
361divx495 divide 1e5   100e1 ->   1E+2
362divx496 divide 1e5   200e1 ->   5E+1
363
364-- tryzeros cases
365precision:   7
366rounding:    half_up
367maxExponent: 92
368minexponent: -92
369divx497  divide  0E+86 1000E-13  -> 0E+92 Clamped
370divx498  divide  0E-98 1000E+13  -> 0E-98 Clamped
371
372precision:   9
373rounding:    half_up
374maxExponent: 999
375minexponent: -999
376
377-- focus on trailing zeros issues
378precision:   9
379divx500 divide  1      9.9    ->  0.101010101  Inexact Rounded
380precision:   8
381divx501 divide  1      9.9    ->  0.10101010   Inexact Rounded
382precision:   7
383divx502 divide  1      9.9    ->  0.1010101    Inexact Rounded
384precision:   6
385divx503 divide  1      9.9    ->  0.101010     Inexact Rounded
386precision:   9
387
388divx511 divide 1         2    -> 0.5
389divx512 divide 1.0       2    -> 0.5
390divx513 divide 1.00      2    -> 0.50
391divx514 divide 1.000     2    -> 0.500
392divx515 divide 1.0000    2    -> 0.5000
393divx516 divide 1.00000   2    -> 0.50000
394divx517 divide 1.000000  2    -> 0.500000
395divx518 divide 1.0000000 2    -> 0.5000000
396divx519 divide 1.00      2.00 -> 0.5
397
398divx521 divide 2    1         -> 2
399divx522 divide 2    1.0       -> 2
400divx523 divide 2    1.00      -> 2
401divx524 divide 2    1.000     -> 2
402divx525 divide 2    1.0000    -> 2
403divx526 divide 2    1.00000   -> 2
404divx527 divide 2    1.000000  -> 2
405divx528 divide 2    1.0000000 -> 2
406divx529 divide 2.00 1.00      -> 2
407
408divx530 divide  2.40   2      ->  1.20
409divx531 divide  2.40   4      ->  0.60
410divx532 divide  2.40  10      ->  0.24
411divx533 divide  2.40   2.0    ->  1.2
412divx534 divide  2.40   4.0    ->  0.6
413divx535 divide  2.40  10.0    ->  0.24
414divx536 divide  2.40   2.00   ->  1.2
415divx537 divide  2.40   4.00   ->  0.6
416divx538 divide  2.40  10.00   ->  0.24
417divx539 divide  0.9    0.1    ->  9
418divx540 divide  0.9    0.01   ->  9E+1
419divx541 divide  0.9    0.001  ->  9E+2
420divx542 divide  5      2      ->  2.5
421divx543 divide  5      2.0    ->  2.5
422divx544 divide  5      2.00   ->  2.5
423divx545 divide  5      20     ->  0.25
424divx546 divide  5      20.0   ->  0.25
425divx547 divide  2.400  2      ->  1.200
426divx548 divide  2.400  2.0    ->  1.20
427divx549 divide  2.400  2.400  ->  1
428
429divx550 divide  240    1      ->  240
430divx551 divide  240    10     ->  24
431divx552 divide  240    100    ->  2.4
432divx553 divide  240    1000   ->  0.24
433divx554 divide  2400   1      ->  2400
434divx555 divide  2400   10     ->  240
435divx556 divide  2400   100    ->  24
436divx557 divide  2400   1000   ->  2.4
437
438-- +ve exponent
439precision: 5
440divx570 divide  2.4E+6     2  ->  1.2E+6
441divx571 divide  2.40E+6    2  ->  1.20E+6
442divx572 divide  2.400E+6   2  ->  1.200E+6
443divx573 divide  2.4000E+6  2  ->  1.2000E+6
444divx574 divide  24E+5      2  ->  1.2E+6
445divx575 divide  240E+4     2  ->  1.20E+6
446divx576 divide  2400E+3    2  ->  1.200E+6
447divx577 divide  24000E+2   2  ->  1.2000E+6
448precision: 6
449divx580 divide  2.4E+6     2  ->  1.2E+6
450divx581 divide  2.40E+6    2  ->  1.20E+6
451divx582 divide  2.400E+6   2  ->  1.200E+6
452divx583 divide  2.4000E+6  2  ->  1.2000E+6
453divx584 divide  24E+5      2  ->  1.2E+6
454divx585 divide  240E+4     2  ->  1.20E+6
455divx586 divide  2400E+3    2  ->  1.200E+6
456divx587 divide  24000E+2   2  ->  1.2000E+6
457precision: 7
458divx590 divide  2.4E+6     2  ->  1.2E+6
459divx591 divide  2.40E+6    2  ->  1.20E+6
460divx592 divide  2.400E+6   2  ->  1.200E+6
461divx593 divide  2.4000E+6  2  ->  1.2000E+6
462divx594 divide  24E+5      2  ->  1.2E+6
463divx595 divide  240E+4     2  ->  1.20E+6
464divx596 divide  2400E+3    2  ->  1.200E+6
465divx597 divide  24000E+2   2  ->  1.2000E+6
466precision:   9
467divx600 divide  2.4E+9     2  ->  1.2E+9
468divx601 divide  2.40E+9    2  ->  1.20E+9
469divx602 divide  2.400E+9   2  ->  1.200E+9
470divx603 divide  2.4000E+9  2  ->  1.2000E+9
471divx604 divide  24E+8      2  ->  1.2E+9
472divx605 divide  240E+7     2  ->  1.20E+9
473divx606 divide  2400E+6    2  ->  1.200E+9
474divx607 divide  24000E+5   2  ->  1.2000E+9
475
476-- long operand triangle
477precision: 33
478divx610 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -41011408883796817797.8131097703792 Inexact Rounded
479precision: 32
480divx611 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -41011408883796817797.813109770379  Inexact Rounded
481precision: 31
482divx612 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -41011408883796817797.81310977038   Inexact Rounded
483precision: 30
484divx613 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -41011408883796817797.8131097704    Inexact Rounded
485precision: 29
486divx614 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -41011408883796817797.813109770     Inexact Rounded
487precision: 28
488divx615 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -41011408883796817797.81310977      Inexact Rounded
489precision: 27
490divx616 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -41011408883796817797.8131098       Inexact Rounded
491precision: 26
492divx617 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -41011408883796817797.813110        Inexact Rounded
493precision: 25
494divx618 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -41011408883796817797.81311         Inexact Rounded
495precision: 24
496divx619 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -41011408883796817797.8131          Inexact Rounded
497precision: 23
498divx620 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -41011408883796817797.813           Inexact Rounded
499precision: 22
500divx621 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -41011408883796817797.81            Inexact Rounded
501precision: 21
502divx622 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -41011408883796817797.8             Inexact Rounded
503precision: 20
504divx623 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -41011408883796817798               Inexact Rounded
505precision: 19
506divx624 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -4.101140888379681780E+19         Inexact Rounded
507precision: 18
508divx625 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -4.10114088837968178E+19         Inexact Rounded
509precision: 17
510divx626 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -4.1011408883796818E+19         Inexact Rounded
511precision: 16
512divx627 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -4.101140888379682E+19         Inexact Rounded
513precision: 15
514divx628 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -4.10114088837968E+19         Inexact Rounded
515precision: 14
516divx629 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -4.1011408883797E+19         Inexact Rounded
517precision: 13
518divx630 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -4.101140888380E+19         Inexact Rounded
519precision: 12
520divx631 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -4.10114088838E+19         Inexact Rounded
521precision: 11
522divx632 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -4.1011408884E+19         Inexact Rounded
523precision: 10
524divx633 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -4.101140888E+19         Inexact Rounded
525precision:  9
526divx634 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -4.10114089E+19         Inexact Rounded
527precision:  8
528divx635 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -4.1011409E+19         Inexact Rounded
529precision:  7
530divx636 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -4.101141E+19         Inexact Rounded
531precision:  6
532divx637 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -4.10114E+19         Inexact Rounded
533precision:  5
534divx638 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -4.1011E+19         Inexact Rounded
535precision:  4
536divx639 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -4.101E+19         Inexact Rounded
537precision:  3
538divx640 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -4.10E+19         Inexact Rounded
539precision:  2
540divx641 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -4.1E+19         Inexact Rounded
541precision:  1
542divx642 divide -3374988581607586061255542201048 82293895124.90045271504836568681 -> -4E+19         Inexact Rounded
543
544-- more zeros, etc.
545precision:   16
546rounding:    half_up
547maxExponent: 384
548minExponent: -383
549
550divx731 divide 5.00 1E-3    -> 5.00E+3
551divx732 divide 00.00 0.000  -> NaN Division_undefined
552divx733 divide 00.00 0E-3   -> NaN Division_undefined
553divx734 divide  0    -0     -> NaN Division_undefined
554divx735 divide -0     0     -> NaN Division_undefined
555divx736 divide -0    -0     -> NaN Division_undefined
556
557divx741 divide  0    -1     -> -0
558divx742 divide -0    -1     ->  0
559divx743 divide  0     1     ->  0
560divx744 divide -0     1     -> -0
561divx745 divide -1     0     -> -Infinity Division_by_zero
562divx746 divide -1    -0     ->  Infinity Division_by_zero
563divx747 divide  1     0     ->  Infinity Division_by_zero
564divx748 divide  1    -0     -> -Infinity Division_by_zero
565
566divx751 divide  0.0  -1     -> -0.0
567divx752 divide -0.0  -1     ->  0.0
568divx753 divide  0.0   1     ->  0.0
569divx754 divide -0.0   1     -> -0.0
570divx755 divide -1.0   0     -> -Infinity Division_by_zero
571divx756 divide -1.0  -0     ->  Infinity Division_by_zero
572divx757 divide  1.0   0     ->  Infinity Division_by_zero
573divx758 divide  1.0  -0     -> -Infinity Division_by_zero
574
575divx761 divide  0    -1.0   -> -0E+1
576divx762 divide -0    -1.0   ->  0E+1
577divx763 divide  0     1.0   ->  0E+1
578divx764 divide -0     1.0   -> -0E+1
579divx765 divide -1     0.0   -> -Infinity Division_by_zero
580divx766 divide -1    -0.0   ->  Infinity Division_by_zero
581divx767 divide  1     0.0   ->  Infinity Division_by_zero
582divx768 divide  1    -0.0   -> -Infinity Division_by_zero
583
584divx771 divide  0.0  -1.0   -> -0
585divx772 divide -0.0  -1.0   ->  0
586divx773 divide  0.0   1.0   ->  0
587divx774 divide -0.0   1.0   -> -0
588divx775 divide -1.0   0.0   -> -Infinity Division_by_zero
589divx776 divide -1.0  -0.0   ->  Infinity Division_by_zero
590divx777 divide  1.0   0.0   ->  Infinity Division_by_zero
591divx778 divide  1.0  -0.0   -> -Infinity Division_by_zero
592
593-- Specials
594divx780 divide  Inf  -Inf   ->  NaN Invalid_operation
595divx781 divide  Inf  -1000  -> -Infinity
596divx782 divide  Inf  -1     -> -Infinity
597divx783 divide  Inf  -0     -> -Infinity
598divx784 divide  Inf   0     ->  Infinity
599divx785 divide  Inf   1     ->  Infinity
600divx786 divide  Inf   1000  ->  Infinity
601divx787 divide  Inf   Inf   ->  NaN Invalid_operation
602divx788 divide -1000  Inf   -> -0E-398 Clamped
603divx789 divide -Inf   Inf   ->  NaN Invalid_operation
604divx790 divide -1     Inf   -> -0E-398 Clamped
605divx791 divide -0     Inf   -> -0E-398 Clamped
606divx792 divide  0     Inf   ->  0E-398 Clamped
607divx793 divide  1     Inf   ->  0E-398 Clamped
608divx794 divide  1000  Inf   ->  0E-398 Clamped
609divx795 divide  Inf   Inf   ->  NaN Invalid_operation
610
611divx800 divide -Inf  -Inf   ->  NaN Invalid_operation
612divx801 divide -Inf  -1000  ->  Infinity
613divx802 divide -Inf  -1     ->  Infinity
614divx803 divide -Inf  -0     ->  Infinity
615divx804 divide -Inf   0     -> -Infinity
616divx805 divide -Inf   1     -> -Infinity
617divx806 divide -Inf   1000  -> -Infinity
618divx807 divide -Inf   Inf   ->  NaN Invalid_operation
619divx808 divide -1000  Inf   -> -0E-398 Clamped
620divx809 divide -Inf  -Inf   ->  NaN Invalid_operation
621divx810 divide -1    -Inf   ->  0E-398 Clamped
622divx811 divide -0    -Inf   ->  0E-398 Clamped
623divx812 divide  0    -Inf   -> -0E-398 Clamped
624divx813 divide  1    -Inf   -> -0E-398 Clamped
625divx814 divide  1000 -Inf   -> -0E-398 Clamped
626divx815 divide  Inf  -Inf   ->  NaN Invalid_operation
627
628divx821 divide  NaN -Inf    ->  NaN
629divx822 divide  NaN -1000   ->  NaN
630divx823 divide  NaN -1      ->  NaN
631divx824 divide  NaN -0      ->  NaN
632divx825 divide  NaN  0      ->  NaN
633divx826 divide  NaN  1      ->  NaN
634divx827 divide  NaN  1000   ->  NaN
635divx828 divide  NaN  Inf    ->  NaN
636divx829 divide  NaN  NaN    ->  NaN
637divx830 divide -Inf  NaN    ->  NaN
638divx831 divide -1000 NaN    ->  NaN
639divx832 divide -1    NaN    ->  NaN
640divx833 divide -0    NaN    ->  NaN
641divx834 divide  0    NaN    ->  NaN
642divx835 divide  1    NaN    ->  NaN
643divx836 divide  1000 NaN    ->  NaN
644divx837 divide  Inf  NaN    ->  NaN
645
646divx841 divide  sNaN -Inf   ->  NaN  Invalid_operation
647divx842 divide  sNaN -1000  ->  NaN  Invalid_operation
648divx843 divide  sNaN -1     ->  NaN  Invalid_operation
649divx844 divide  sNaN -0     ->  NaN  Invalid_operation
650divx845 divide  sNaN  0     ->  NaN  Invalid_operation
651divx846 divide  sNaN  1     ->  NaN  Invalid_operation
652divx847 divide  sNaN  1000  ->  NaN  Invalid_operation
653divx848 divide  sNaN  NaN   ->  NaN  Invalid_operation
654divx849 divide  sNaN sNaN   ->  NaN  Invalid_operation
655divx850 divide  NaN  sNaN   ->  NaN  Invalid_operation
656divx851 divide -Inf  sNaN   ->  NaN  Invalid_operation
657divx852 divide -1000 sNaN   ->  NaN  Invalid_operation
658divx853 divide -1    sNaN   ->  NaN  Invalid_operation
659divx854 divide -0    sNaN   ->  NaN  Invalid_operation
660divx855 divide  0    sNaN   ->  NaN  Invalid_operation
661divx856 divide  1    sNaN   ->  NaN  Invalid_operation
662divx857 divide  1000 sNaN   ->  NaN  Invalid_operation
663divx858 divide  Inf  sNaN   ->  NaN  Invalid_operation
664divx859 divide  NaN  sNaN   ->  NaN  Invalid_operation
665
666-- propagating NaNs
667divx861 divide  NaN9 -Inf   ->  NaN9
668divx862 divide  NaN8  1000  ->  NaN8
669divx863 divide  NaN7  Inf   ->  NaN7
670divx864 divide  NaN6  NaN5  ->  NaN6
671divx865 divide -Inf   NaN4  ->  NaN4
672divx866 divide -1000  NaN3  ->  NaN3
673divx867 divide  Inf   NaN2  ->  NaN2
674
675divx871 divide  sNaN99 -Inf    ->  NaN99 Invalid_operation
676divx872 divide  sNaN98 -1      ->  NaN98 Invalid_operation
677divx873 divide  sNaN97  NaN    ->  NaN97 Invalid_operation
678divx874 divide  sNaN96 sNaN94  ->  NaN96 Invalid_operation
679divx875 divide  NaN95  sNaN93  ->  NaN93 Invalid_operation
680divx876 divide -Inf    sNaN92  ->  NaN92 Invalid_operation
681divx877 divide  0      sNaN91  ->  NaN91 Invalid_operation
682divx878 divide  Inf    sNaN90  ->  NaN90 Invalid_operation
683divx879 divide  NaN    sNaN89  ->  NaN89 Invalid_operation
684
685divx881 divide  -NaN9  -Inf   ->  -NaN9
686divx882 divide  -NaN8   1000  ->  -NaN8
687divx883 divide  -NaN7   Inf   ->  -NaN7
688divx884 divide  -NaN6  -NaN5  ->  -NaN6
689divx885 divide  -Inf   -NaN4  ->  -NaN4
690divx886 divide  -1000  -NaN3  ->  -NaN3
691divx887 divide   Inf   -NaN2  ->  -NaN2
692
693divx891 divide -sNaN99 -Inf    -> -NaN99 Invalid_operation
694divx892 divide -sNaN98 -1      -> -NaN98 Invalid_operation
695divx893 divide -sNaN97  NaN    -> -NaN97 Invalid_operation
696divx894 divide -sNaN96 -sNaN94 -> -NaN96 Invalid_operation
697divx895 divide -NaN95  -sNaN93 -> -NaN93 Invalid_operation
698divx896 divide -Inf    -sNaN92 -> -NaN92 Invalid_operation
699divx897 divide  0      -sNaN91 -> -NaN91 Invalid_operation
700divx898 divide  Inf    -sNaN90 -> -NaN90 Invalid_operation
701divx899 divide -NaN    -sNaN89 -> -NaN89 Invalid_operation
702
703maxexponent: 999999999
704minexponent: -999999999
705
706-- Various flavours of divide by 0
707divx901 divide    0       0   ->  NaN Division_undefined
708divx902 divide    0.0E5   0   ->  NaN Division_undefined
709divx903 divide    0.000   0   ->  NaN Division_undefined
710divx904 divide    0.0001  0   ->  Infinity Division_by_zero
711divx905 divide    0.01    0   ->  Infinity Division_by_zero
712divx906 divide    0.1     0   ->  Infinity Division_by_zero
713divx907 divide    1       0   ->  Infinity Division_by_zero
714divx908 divide    1       0.0 ->  Infinity Division_by_zero
715divx909 divide   10       0.0 ->  Infinity Division_by_zero
716divx910 divide   1E+100   0.0 ->  Infinity Division_by_zero
717divx911 divide   1E+1000  0   ->  Infinity Division_by_zero
718
719divx921 divide   -0.0001  0   -> -Infinity Division_by_zero
720divx922 divide   -0.01    0   -> -Infinity Division_by_zero
721divx923 divide   -0.1     0   -> -Infinity Division_by_zero
722divx924 divide   -1       0   -> -Infinity Division_by_zero
723divx925 divide   -1       0.0 -> -Infinity Division_by_zero
724divx926 divide  -10       0.0 -> -Infinity Division_by_zero
725divx927 divide  -1E+100   0.0 -> -Infinity Division_by_zero
726divx928 divide  -1E+1000  0   -> -Infinity Division_by_zero
727
728divx931 divide    0.0001 -0   -> -Infinity Division_by_zero
729divx932 divide    0.01   -0   -> -Infinity Division_by_zero
730divx933 divide    0.1    -0   -> -Infinity Division_by_zero
731divx934 divide    1      -0   -> -Infinity Division_by_zero
732divx935 divide    1      -0.0 -> -Infinity Division_by_zero
733divx936 divide   10      -0.0 -> -Infinity Division_by_zero
734divx937 divide   1E+100  -0.0 -> -Infinity Division_by_zero
735divx938 divide   1E+1000 -0   -> -Infinity Division_by_zero
736
737divx941 divide   -0.0001 -0   ->  Infinity Division_by_zero
738divx942 divide   -0.01   -0   ->  Infinity Division_by_zero
739divx943 divide   -0.1    -0   ->  Infinity Division_by_zero
740divx944 divide   -1      -0   ->  Infinity Division_by_zero
741divx945 divide   -1      -0.0 ->  Infinity Division_by_zero
742divx946 divide  -10      -0.0 ->  Infinity Division_by_zero
743divx947 divide  -1E+100  -0.0 ->  Infinity Division_by_zero
744divx948 divide  -1E+1000 -0   ->  Infinity Division_by_zero
745
746-- overflow and underflow tests
747precision: 9
748maxexponent: 999999999
749minexponent: -999999999
750divx951 divide 9E+999999999 +0.23456789012345E-0 -> Infinity Inexact Overflow Rounded
751divx952 divide +0.100 9E+999999999 -> 1.111111E-1000000001 Inexact Rounded Underflow Subnormal
752divx953 divide 9E-999999999 +9.100 -> 9.8901099E-1000000000 Inexact Rounded Underflow Subnormal
753divx954 divide -1.23456789          9E+999999999 -> -1.3717421E-1000000000 Subnormal
754divx955 divide -1.23456789012345E-0 9E+999999999 -> -1.3717421E-1000000000 Underflow Subnormal Rounded Inexact
755divx956 divide -1.23456789012345E-0 7E+999999999 -> -1.7636684E-1000000000 Inexact Rounded Underflow Subnormal
756divx957 divide 9E+999999999 -0.83456789012345E-0 -> -Infinity Inexact Overflow Rounded
757divx958 divide -0.100 9E+999999999 -> -1.111111E-1000000001 Subnormal Inexact Rounded Underflow
758divx959 divide 9E-999999999 -9.100 -> -9.8901099E-1000000000 Inexact Rounded Underflow Subnormal
759
760-- overflow and underflow (additional edge tests in multiply.decTest)
761-- 'subnormal' results now possible (all hard underflow or overflow in
762-- base arithemtic)
763divx960 divide 1e-600000000 1e+400000001 -> 1E-1000000001 Subnormal
764divx961 divide 1e-600000000 1e+400000002 -> 1E-1000000002 Subnormal
765divx962 divide 1e-600000000 1e+400000003 -> 1E-1000000003 Subnormal
766divx963 divide 1e-600000000 1e+400000004 -> 1E-1000000004 Subnormal
767divx964 divide 1e-600000000 1e+400000005 -> 1E-1000000005 Subnormal
768divx965 divide 1e-600000000 1e+400000006 -> 1E-1000000006 Subnormal
769divx966 divide 1e-600000000 1e+400000007 -> 1E-1000000007 Subnormal
770divx967 divide 1e-600000000 1e+400000008 -> 0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
771divx968 divide 1e-600000000 1e+400000009 -> 0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
772divx969 divide 1e-600000000 1e+400000010 -> 0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
773-- [no equivalent of 'subnormal' for overflow]
774divx970 divide 1e+600000000 1e-400000001 -> Infinity Overflow Inexact Rounded
775divx971 divide 1e+600000000 1e-400000002 -> Infinity Overflow Inexact Rounded
776divx972 divide 1e+600000000 1e-400000003 -> Infinity Overflow Inexact Rounded
777divx973 divide 1e+600000000 1e-400000004 -> Infinity Overflow Inexact Rounded
778divx974 divide 1e+600000000 1e-400000005 -> Infinity Overflow Inexact Rounded
779divx975 divide 1e+600000000 1e-400000006 -> Infinity Overflow Inexact Rounded
780divx976 divide 1e+600000000 1e-400000007 -> Infinity Overflow Inexact Rounded
781divx977 divide 1e+600000000 1e-400000008 -> Infinity Overflow Inexact Rounded
782divx978 divide 1e+600000000 1e-400000009 -> Infinity Overflow Inexact Rounded
783divx979 divide 1e+600000000 1e-400000010 -> Infinity Overflow Inexact Rounded
784
785-- Sign after overflow and underflow
786divx980 divide  1e-600000000  1e+400000009 ->  0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
787divx981 divide  1e-600000000 -1e+400000009 -> -0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
788divx982 divide -1e-600000000  1e+400000009 -> -0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
789divx983 divide -1e-600000000 -1e+400000009 ->  0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
790divx984 divide  1e+600000000  1e-400000009 ->  Infinity Overflow Inexact Rounded
791divx985 divide  1e+600000000 -1e-400000009 -> -Infinity Overflow Inexact Rounded
792divx986 divide -1e+600000000  1e-400000009 -> -Infinity Overflow Inexact Rounded
793divx987 divide -1e+600000000 -1e-400000009 ->  Infinity Overflow Inexact Rounded
794
795-- Long operand overflow may be a different path
796precision: 3
797divx990 divide 1000  9.999E-999999999      ->  Infinity Inexact Overflow Rounded
798divx991 divide 1000 -9.999E-999999999      -> -Infinity Inexact Overflow Rounded
799divx992 divide       9.999E+999999999 0.01 ->  Infinity Inexact Overflow Rounded
800divx993 divide      -9.999E+999999999 0.01 -> -Infinity Inexact Overflow Rounded
801
802-- check for double-rounded subnormals
803precision:   5
804maxexponent: 79
805minexponent: -79
806divx1001 divide    1.52444E-80 1      -> 1.524E-80 Inexact Rounded Subnormal Underflow
807divx1002 divide    1.52445E-80 1      -> 1.524E-80 Inexact Rounded Subnormal Underflow
808divx1003 divide    1.52446E-80 1      -> 1.524E-80 Inexact Rounded Subnormal Underflow
809
810-- a rounding problem in one implementation
811precision:   34
812rounding:    half_up
813maxExponent: 6144
814minExponent: -6143
815-- Unbounded answer to 40 digits:
816--   1.465811965811965811965811965811965811966E+7000
817divx1010 divide 343E6000  234E-1000 -> Infinity Overflow Inexact Rounded
818
819precision:   34
820rounding:    half_up
821maxExponent: 6144
822minExponent: -6143
823
824-- Examples from SQL proposal (Krishna Kulkarni)
825precision: 7
826divx1021  divide 1E0          1E0 -> 1
827divx1022  divide 1E0          2E0 -> 0.5
828divx1023  divide 1E0          3E0 -> 0.3333333 Inexact Rounded
829divx1024  divide 100E-2   1000E-3 -> 1
830divx1025  divide 24E-1        2E0 -> 1.2
831divx1026  divide 2400E-3      2E0 -> 1.200
832divx1027  divide 5E0          2E0 -> 2.5
833divx1028  divide 5E0        20E-1 -> 2.5
834divx1029  divide 5E0      2000E-3 -> 2.5
835divx1030  divide 5E0         2E-1 -> 25
836divx1031  divide 5E0        20E-2 -> 25
837divx1032  divide 480E-2       3E0 -> 1.60
838divx1033  divide 47E-1        2E0 -> 2.35
839
840-- ECMAScript bad examples
841rounding:    half_down
842precision: 7
843divx1050  divide 5 9  -> 0.5555556 Inexact Rounded
844rounding:    half_even
845divx1051  divide 5 11 -> 0.4545455 Inexact Rounded
846
847-- payload decapitate
848precision: 5
849divx1055  divide   sNaN987654321 1 ->  NaN54321  Invalid_operation
850
851-- Null tests
852divx9998 divide 10  # -> NaN Invalid_operation
853divx9999 divide  # 10 -> NaN Invalid_operation
854