|  | ------------------------------------------------------------------------ | 
|  | -- ddCompare.decTest -- decDouble comparison that allows quiet NaNs   -- | 
|  | -- Copyright (c) IBM Corporation, 1981, 2008.  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: 2.59 | 
|  |  | 
|  | -- Note that we cannot assume add/subtract tests cover paths adequately, | 
|  | -- here, because the code might be quite different (comparison cannot | 
|  | -- overflow or underflow, so actual subtractions are not necessary). | 
|  |  | 
|  | -- All operands and results are decDoubles. | 
|  | precision:   16 | 
|  | maxExponent: 384 | 
|  | minExponent: -383 | 
|  | extended:    1 | 
|  | clamp:       1 | 
|  | rounding:    half_even | 
|  |  | 
|  | -- sanity checks | 
|  | ddcom001 compare  -2  -2  -> 0 | 
|  | ddcom002 compare  -2  -1  -> -1 | 
|  | ddcom003 compare  -2   0  -> -1 | 
|  | ddcom004 compare  -2   1  -> -1 | 
|  | ddcom005 compare  -2   2  -> -1 | 
|  | ddcom006 compare  -1  -2  -> 1 | 
|  | ddcom007 compare  -1  -1  -> 0 | 
|  | ddcom008 compare  -1   0  -> -1 | 
|  | ddcom009 compare  -1   1  -> -1 | 
|  | ddcom010 compare  -1   2  -> -1 | 
|  | ddcom011 compare   0  -2  -> 1 | 
|  | ddcom012 compare   0  -1  -> 1 | 
|  | ddcom013 compare   0   0  -> 0 | 
|  | ddcom014 compare   0   1  -> -1 | 
|  | ddcom015 compare   0   2  -> -1 | 
|  | ddcom016 compare   1  -2  -> 1 | 
|  | ddcom017 compare   1  -1  -> 1 | 
|  | ddcom018 compare   1   0  -> 1 | 
|  | ddcom019 compare   1   1  -> 0 | 
|  | ddcom020 compare   1   2  -> -1 | 
|  | ddcom021 compare   2  -2  -> 1 | 
|  | ddcom022 compare   2  -1  -> 1 | 
|  | ddcom023 compare   2   0  -> 1 | 
|  | ddcom025 compare   2   1  -> 1 | 
|  | ddcom026 compare   2   2  -> 0 | 
|  |  | 
|  | ddcom031 compare  -20  -20  -> 0 | 
|  | ddcom032 compare  -20  -10  -> -1 | 
|  | ddcom033 compare  -20   00  -> -1 | 
|  | ddcom034 compare  -20   10  -> -1 | 
|  | ddcom035 compare  -20   20  -> -1 | 
|  | ddcom036 compare  -10  -20  -> 1 | 
|  | ddcom037 compare  -10  -10  -> 0 | 
|  | ddcom038 compare  -10   00  -> -1 | 
|  | ddcom039 compare  -10   10  -> -1 | 
|  | ddcom040 compare  -10   20  -> -1 | 
|  | ddcom041 compare   00  -20  -> 1 | 
|  | ddcom042 compare   00  -10  -> 1 | 
|  | ddcom043 compare   00   00  -> 0 | 
|  | ddcom044 compare   00   10  -> -1 | 
|  | ddcom045 compare   00   20  -> -1 | 
|  | ddcom046 compare   10  -20  -> 1 | 
|  | ddcom047 compare   10  -10  -> 1 | 
|  | ddcom048 compare   10   00  -> 1 | 
|  | ddcom049 compare   10   10  -> 0 | 
|  | ddcom050 compare   10   20  -> -1 | 
|  | ddcom051 compare   20  -20  -> 1 | 
|  | ddcom052 compare   20  -10  -> 1 | 
|  | ddcom053 compare   20   00  -> 1 | 
|  | ddcom055 compare   20   10  -> 1 | 
|  | ddcom056 compare   20   20  -> 0 | 
|  |  | 
|  | ddcom061 compare  -2.0  -2.0  -> 0 | 
|  | ddcom062 compare  -2.0  -1.0  -> -1 | 
|  | ddcom063 compare  -2.0   0.0  -> -1 | 
|  | ddcom064 compare  -2.0   1.0  -> -1 | 
|  | ddcom065 compare  -2.0   2.0  -> -1 | 
|  | ddcom066 compare  -1.0  -2.0  -> 1 | 
|  | ddcom067 compare  -1.0  -1.0  -> 0 | 
|  | ddcom068 compare  -1.0   0.0  -> -1 | 
|  | ddcom069 compare  -1.0   1.0  -> -1 | 
|  | ddcom070 compare  -1.0   2.0  -> -1 | 
|  | ddcom071 compare   0.0  -2.0  -> 1 | 
|  | ddcom072 compare   0.0  -1.0  -> 1 | 
|  | ddcom073 compare   0.0   0.0  -> 0 | 
|  | ddcom074 compare   0.0   1.0  -> -1 | 
|  | ddcom075 compare   0.0   2.0  -> -1 | 
|  | ddcom076 compare   1.0  -2.0  -> 1 | 
|  | ddcom077 compare   1.0  -1.0  -> 1 | 
|  | ddcom078 compare   1.0   0.0  -> 1 | 
|  | ddcom079 compare   1.0   1.0  -> 0 | 
|  | ddcom080 compare   1.0   2.0  -> -1 | 
|  | ddcom081 compare   2.0  -2.0  -> 1 | 
|  | ddcom082 compare   2.0  -1.0  -> 1 | 
|  | ddcom083 compare   2.0   0.0  -> 1 | 
|  | ddcom085 compare   2.0   1.0  -> 1 | 
|  | ddcom086 compare   2.0   2.0  -> 0 | 
|  | ddcom087 compare   1.0   0.1  -> 1 | 
|  | ddcom088 compare   0.1   1.0  -> -1 | 
|  |  | 
|  | -- now some cases which might overflow if subtract were used | 
|  | ddcom095 compare  9.999999999999999E+384 9.999999999999999E+384  -> 0 | 
|  | ddcom096 compare -9.999999999999999E+384 9.999999999999999E+384  -> -1 | 
|  | ddcom097 compare  9.999999999999999E+384 -9.999999999999999E+384 -> 1 | 
|  | ddcom098 compare -9.999999999999999E+384 -9.999999999999999E+384 -> 0 | 
|  |  | 
|  | -- some differing length/exponent cases | 
|  | ddcom100 compare   7.0    7.0    -> 0 | 
|  | ddcom101 compare   7.0    7      -> 0 | 
|  | ddcom102 compare   7      7.0    -> 0 | 
|  | ddcom103 compare   7E+0   7.0    -> 0 | 
|  | ddcom104 compare   70E-1  7.0    -> 0 | 
|  | ddcom105 compare   0.7E+1 7      -> 0 | 
|  | ddcom106 compare   70E-1  7      -> 0 | 
|  | ddcom107 compare   7.0    7E+0   -> 0 | 
|  | ddcom108 compare   7.0    70E-1  -> 0 | 
|  | ddcom109 compare   7      0.7E+1 -> 0 | 
|  | ddcom110 compare   7      70E-1  -> 0 | 
|  |  | 
|  | ddcom120 compare   8.0    7.0    -> 1 | 
|  | ddcom121 compare   8.0    7      -> 1 | 
|  | ddcom122 compare   8      7.0    -> 1 | 
|  | ddcom123 compare   8E+0   7.0    -> 1 | 
|  | ddcom124 compare   80E-1  7.0    -> 1 | 
|  | ddcom125 compare   0.8E+1 7      -> 1 | 
|  | ddcom126 compare   80E-1  7      -> 1 | 
|  | ddcom127 compare   8.0    7E+0   -> 1 | 
|  | ddcom128 compare   8.0    70E-1  -> 1 | 
|  | ddcom129 compare   8      0.7E+1  -> 1 | 
|  | ddcom130 compare   8      70E-1  -> 1 | 
|  |  | 
|  | ddcom140 compare   8.0    9.0    -> -1 | 
|  | ddcom141 compare   8.0    9      -> -1 | 
|  | ddcom142 compare   8      9.0    -> -1 | 
|  | ddcom143 compare   8E+0   9.0    -> -1 | 
|  | ddcom144 compare   80E-1  9.0    -> -1 | 
|  | ddcom145 compare   0.8E+1 9      -> -1 | 
|  | ddcom146 compare   80E-1  9      -> -1 | 
|  | ddcom147 compare   8.0    9E+0   -> -1 | 
|  | ddcom148 compare   8.0    90E-1  -> -1 | 
|  | ddcom149 compare   8      0.9E+1 -> -1 | 
|  | ddcom150 compare   8      90E-1  -> -1 | 
|  |  | 
|  | -- and again, with sign changes -+ .. | 
|  | ddcom200 compare  -7.0    7.0    -> -1 | 
|  | ddcom201 compare  -7.0    7      -> -1 | 
|  | ddcom202 compare  -7      7.0    -> -1 | 
|  | ddcom203 compare  -7E+0   7.0    -> -1 | 
|  | ddcom204 compare  -70E-1  7.0    -> -1 | 
|  | ddcom205 compare  -0.7E+1 7      -> -1 | 
|  | ddcom206 compare  -70E-1  7      -> -1 | 
|  | ddcom207 compare  -7.0    7E+0   -> -1 | 
|  | ddcom208 compare  -7.0    70E-1  -> -1 | 
|  | ddcom209 compare  -7      0.7E+1 -> -1 | 
|  | ddcom210 compare  -7      70E-1  -> -1 | 
|  |  | 
|  | ddcom220 compare  -8.0    7.0    -> -1 | 
|  | ddcom221 compare  -8.0    7      -> -1 | 
|  | ddcom222 compare  -8      7.0    -> -1 | 
|  | ddcom223 compare  -8E+0   7.0    -> -1 | 
|  | ddcom224 compare  -80E-1  7.0    -> -1 | 
|  | ddcom225 compare  -0.8E+1 7      -> -1 | 
|  | ddcom226 compare  -80E-1  7      -> -1 | 
|  | ddcom227 compare  -8.0    7E+0   -> -1 | 
|  | ddcom228 compare  -8.0    70E-1  -> -1 | 
|  | ddcom229 compare  -8      0.7E+1 -> -1 | 
|  | ddcom230 compare  -8      70E-1  -> -1 | 
|  |  | 
|  | ddcom240 compare  -8.0    9.0    -> -1 | 
|  | ddcom241 compare  -8.0    9      -> -1 | 
|  | ddcom242 compare  -8      9.0    -> -1 | 
|  | ddcom243 compare  -8E+0   9.0    -> -1 | 
|  | ddcom244 compare  -80E-1  9.0    -> -1 | 
|  | ddcom245 compare  -0.8E+1 9      -> -1 | 
|  | ddcom246 compare  -80E-1  9      -> -1 | 
|  | ddcom247 compare  -8.0    9E+0   -> -1 | 
|  | ddcom248 compare  -8.0    90E-1  -> -1 | 
|  | ddcom249 compare  -8      0.9E+1 -> -1 | 
|  | ddcom250 compare  -8      90E-1  -> -1 | 
|  |  | 
|  | -- and again, with sign changes +- .. | 
|  | ddcom300 compare   7.0    -7.0    -> 1 | 
|  | ddcom301 compare   7.0    -7      -> 1 | 
|  | ddcom302 compare   7      -7.0    -> 1 | 
|  | ddcom303 compare   7E+0   -7.0    -> 1 | 
|  | ddcom304 compare   70E-1  -7.0    -> 1 | 
|  | ddcom305 compare   .7E+1  -7      -> 1 | 
|  | ddcom306 compare   70E-1  -7      -> 1 | 
|  | ddcom307 compare   7.0    -7E+0   -> 1 | 
|  | ddcom308 compare   7.0    -70E-1  -> 1 | 
|  | ddcom309 compare   7      -.7E+1  -> 1 | 
|  | ddcom310 compare   7      -70E-1  -> 1 | 
|  |  | 
|  | ddcom320 compare   8.0    -7.0    -> 1 | 
|  | ddcom321 compare   8.0    -7      -> 1 | 
|  | ddcom322 compare   8      -7.0    -> 1 | 
|  | ddcom323 compare   8E+0   -7.0    -> 1 | 
|  | ddcom324 compare   80E-1  -7.0    -> 1 | 
|  | ddcom325 compare   .8E+1  -7      -> 1 | 
|  | ddcom326 compare   80E-1  -7      -> 1 | 
|  | ddcom327 compare   8.0    -7E+0   -> 1 | 
|  | ddcom328 compare   8.0    -70E-1  -> 1 | 
|  | ddcom329 compare   8      -.7E+1  -> 1 | 
|  | ddcom330 compare   8      -70E-1  -> 1 | 
|  |  | 
|  | ddcom340 compare   8.0    -9.0    -> 1 | 
|  | ddcom341 compare   8.0    -9      -> 1 | 
|  | ddcom342 compare   8      -9.0    -> 1 | 
|  | ddcom343 compare   8E+0   -9.0    -> 1 | 
|  | ddcom344 compare   80E-1  -9.0    -> 1 | 
|  | ddcom345 compare   .8E+1  -9      -> 1 | 
|  | ddcom346 compare   80E-1  -9      -> 1 | 
|  | ddcom347 compare   8.0    -9E+0   -> 1 | 
|  | ddcom348 compare   8.0    -90E-1  -> 1 | 
|  | ddcom349 compare   8      -.9E+1  -> 1 | 
|  | ddcom350 compare   8      -90E-1  -> 1 | 
|  |  | 
|  | -- and again, with sign changes -- .. | 
|  | ddcom400 compare   -7.0    -7.0    -> 0 | 
|  | ddcom401 compare   -7.0    -7      -> 0 | 
|  | ddcom402 compare   -7      -7.0    -> 0 | 
|  | ddcom403 compare   -7E+0   -7.0    -> 0 | 
|  | ddcom404 compare   -70E-1  -7.0    -> 0 | 
|  | ddcom405 compare   -.7E+1  -7      -> 0 | 
|  | ddcom406 compare   -70E-1  -7      -> 0 | 
|  | ddcom407 compare   -7.0    -7E+0   -> 0 | 
|  | ddcom408 compare   -7.0    -70E-1  -> 0 | 
|  | ddcom409 compare   -7      -.7E+1  -> 0 | 
|  | ddcom410 compare   -7      -70E-1  -> 0 | 
|  |  | 
|  | ddcom420 compare   -8.0    -7.0    -> -1 | 
|  | ddcom421 compare   -8.0    -7      -> -1 | 
|  | ddcom422 compare   -8      -7.0    -> -1 | 
|  | ddcom423 compare   -8E+0   -7.0    -> -1 | 
|  | ddcom424 compare   -80E-1  -7.0    -> -1 | 
|  | ddcom425 compare   -.8E+1  -7      -> -1 | 
|  | ddcom426 compare   -80E-1  -7      -> -1 | 
|  | ddcom427 compare   -8.0    -7E+0   -> -1 | 
|  | ddcom428 compare   -8.0    -70E-1  -> -1 | 
|  | ddcom429 compare   -8      -.7E+1  -> -1 | 
|  | ddcom430 compare   -8      -70E-1  -> -1 | 
|  |  | 
|  | ddcom440 compare   -8.0    -9.0    -> 1 | 
|  | ddcom441 compare   -8.0    -9      -> 1 | 
|  | ddcom442 compare   -8      -9.0    -> 1 | 
|  | ddcom443 compare   -8E+0   -9.0    -> 1 | 
|  | ddcom444 compare   -80E-1  -9.0    -> 1 | 
|  | ddcom445 compare   -.8E+1  -9      -> 1 | 
|  | ddcom446 compare   -80E-1  -9      -> 1 | 
|  | ddcom447 compare   -8.0    -9E+0   -> 1 | 
|  | ddcom448 compare   -8.0    -90E-1  -> 1 | 
|  | ddcom449 compare   -8      -.9E+1  -> 1 | 
|  | ddcom450 compare   -8      -90E-1  -> 1 | 
|  |  | 
|  | -- misalignment traps for little-endian | 
|  | ddcom451 compare      1.0       0.1  -> 1 | 
|  | ddcom452 compare      0.1       1.0  -> -1 | 
|  | ddcom453 compare     10.0       0.1  -> 1 | 
|  | ddcom454 compare      0.1      10.0  -> -1 | 
|  | ddcom455 compare      100       1.0  -> 1 | 
|  | ddcom456 compare      1.0       100  -> -1 | 
|  | ddcom457 compare     1000      10.0  -> 1 | 
|  | ddcom458 compare     10.0      1000  -> -1 | 
|  | ddcom459 compare    10000     100.0  -> 1 | 
|  | ddcom460 compare    100.0     10000  -> -1 | 
|  | ddcom461 compare   100000    1000.0  -> 1 | 
|  | ddcom462 compare   1000.0    100000  -> -1 | 
|  | ddcom463 compare  1000000   10000.0  -> 1 | 
|  | ddcom464 compare  10000.0   1000000  -> -1 | 
|  |  | 
|  | -- testcases that subtract to lots of zeros at boundaries [pgr] | 
|  | ddcom473 compare 123.4560000000000E-89 123.456E-89 -> 0 | 
|  | ddcom474 compare 123.456000000000E+89 123.456E+89 -> 0 | 
|  | ddcom475 compare 123.45600000000E-89 123.456E-89 -> 0 | 
|  | ddcom476 compare 123.4560000000E+89 123.456E+89 -> 0 | 
|  | ddcom477 compare 123.456000000E-89 123.456E-89 -> 0 | 
|  | ddcom478 compare 123.45600000E+89 123.456E+89 -> 0 | 
|  | ddcom479 compare 123.4560000E-89 123.456E-89 -> 0 | 
|  | ddcom480 compare 123.456000E+89 123.456E+89 -> 0 | 
|  | ddcom481 compare 123.45600E-89 123.456E-89 -> 0 | 
|  | ddcom482 compare 123.4560E+89 123.456E+89 -> 0 | 
|  | ddcom483 compare 123.456E-89 123.456E-89 -> 0 | 
|  | ddcom487 compare 123.456E+89 123.4560000000000E+89 -> 0 | 
|  | ddcom488 compare 123.456E-89 123.456000000000E-89 -> 0 | 
|  | ddcom489 compare 123.456E+89 123.45600000000E+89 -> 0 | 
|  | ddcom490 compare 123.456E-89 123.4560000000E-89 -> 0 | 
|  | ddcom491 compare 123.456E+89 123.456000000E+89 -> 0 | 
|  | ddcom492 compare 123.456E-89 123.45600000E-89 -> 0 | 
|  | ddcom493 compare 123.456E+89 123.4560000E+89 -> 0 | 
|  | ddcom494 compare 123.456E-89 123.456000E-89 -> 0 | 
|  | ddcom495 compare 123.456E+89 123.45600E+89 -> 0 | 
|  | ddcom496 compare 123.456E-89 123.4560E-89 -> 0 | 
|  | ddcom497 compare 123.456E+89 123.456E+89 -> 0 | 
|  |  | 
|  | -- wide-ranging, around precision; signs equal | 
|  | ddcom500 compare    1     1E-15    -> 1 | 
|  | ddcom501 compare    1     1E-14    -> 1 | 
|  | ddcom502 compare    1     1E-13    -> 1 | 
|  | ddcom503 compare    1     1E-12    -> 1 | 
|  | ddcom504 compare    1     1E-11    -> 1 | 
|  | ddcom505 compare    1     1E-10    -> 1 | 
|  | ddcom506 compare    1     1E-9     -> 1 | 
|  | ddcom507 compare    1     1E-8     -> 1 | 
|  | ddcom508 compare    1     1E-7     -> 1 | 
|  | ddcom509 compare    1     1E-6     -> 1 | 
|  | ddcom510 compare    1     1E-5     -> 1 | 
|  | ddcom511 compare    1     1E-4     -> 1 | 
|  | ddcom512 compare    1     1E-3     -> 1 | 
|  | ddcom513 compare    1     1E-2     -> 1 | 
|  | ddcom514 compare    1     1E-1     -> 1 | 
|  | ddcom515 compare    1     1E-0     -> 0 | 
|  | ddcom516 compare    1     1E+1     -> -1 | 
|  | ddcom517 compare    1     1E+2     -> -1 | 
|  | ddcom518 compare    1     1E+3     -> -1 | 
|  | ddcom519 compare    1     1E+4     -> -1 | 
|  | ddcom521 compare    1     1E+5     -> -1 | 
|  | ddcom522 compare    1     1E+6     -> -1 | 
|  | ddcom523 compare    1     1E+7     -> -1 | 
|  | ddcom524 compare    1     1E+8     -> -1 | 
|  | ddcom525 compare    1     1E+9     -> -1 | 
|  | ddcom526 compare    1     1E+10    -> -1 | 
|  | ddcom527 compare    1     1E+11    -> -1 | 
|  | ddcom528 compare    1     1E+12    -> -1 | 
|  | ddcom529 compare    1     1E+13    -> -1 | 
|  | ddcom530 compare    1     1E+14    -> -1 | 
|  | ddcom531 compare    1     1E+15    -> -1 | 
|  | -- LR swap | 
|  | ddcom540 compare    1E-15  1       -> -1 | 
|  | ddcom541 compare    1E-14  1       -> -1 | 
|  | ddcom542 compare    1E-13  1       -> -1 | 
|  | ddcom543 compare    1E-12  1       -> -1 | 
|  | ddcom544 compare    1E-11  1       -> -1 | 
|  | ddcom545 compare    1E-10  1       -> -1 | 
|  | ddcom546 compare    1E-9   1       -> -1 | 
|  | ddcom547 compare    1E-8   1       -> -1 | 
|  | ddcom548 compare    1E-7   1       -> -1 | 
|  | ddcom549 compare    1E-6   1       -> -1 | 
|  | ddcom550 compare    1E-5   1       -> -1 | 
|  | ddcom551 compare    1E-4   1       -> -1 | 
|  | ddcom552 compare    1E-3   1       -> -1 | 
|  | ddcom553 compare    1E-2   1       -> -1 | 
|  | ddcom554 compare    1E-1   1       -> -1 | 
|  | ddcom555 compare    1E-0   1       ->  0 | 
|  | ddcom556 compare    1E+1   1       ->  1 | 
|  | ddcom557 compare    1E+2   1       ->  1 | 
|  | ddcom558 compare    1E+3   1       ->  1 | 
|  | ddcom559 compare    1E+4   1       ->  1 | 
|  | ddcom561 compare    1E+5   1       ->  1 | 
|  | ddcom562 compare    1E+6   1       ->  1 | 
|  | ddcom563 compare    1E+7   1       ->  1 | 
|  | ddcom564 compare    1E+8   1       ->  1 | 
|  | ddcom565 compare    1E+9   1       ->  1 | 
|  | ddcom566 compare    1E+10  1       ->  1 | 
|  | ddcom567 compare    1E+11  1       ->  1 | 
|  | ddcom568 compare    1E+12  1       ->  1 | 
|  | ddcom569 compare    1E+13  1       ->  1 | 
|  | ddcom570 compare    1E+14  1       ->  1 | 
|  | ddcom571 compare    1E+15  1       ->  1 | 
|  | -- similar with a useful coefficient, one side only | 
|  | ddcom580 compare  0.000000987654321     1E-15    -> 1 | 
|  | ddcom581 compare  0.000000987654321     1E-14    -> 1 | 
|  | ddcom582 compare  0.000000987654321     1E-13    -> 1 | 
|  | ddcom583 compare  0.000000987654321     1E-12    -> 1 | 
|  | ddcom584 compare  0.000000987654321     1E-11    -> 1 | 
|  | ddcom585 compare  0.000000987654321     1E-10    -> 1 | 
|  | ddcom586 compare  0.000000987654321     1E-9     -> 1 | 
|  | ddcom587 compare  0.000000987654321     1E-8     -> 1 | 
|  | ddcom588 compare  0.000000987654321     1E-7     -> 1 | 
|  | ddcom589 compare  0.000000987654321     1E-6     -> -1 | 
|  | ddcom590 compare  0.000000987654321     1E-5     -> -1 | 
|  | ddcom591 compare  0.000000987654321     1E-4     -> -1 | 
|  | ddcom592 compare  0.000000987654321     1E-3     -> -1 | 
|  | ddcom593 compare  0.000000987654321     1E-2     -> -1 | 
|  | ddcom594 compare  0.000000987654321     1E-1     -> -1 | 
|  | ddcom595 compare  0.000000987654321     1E-0     -> -1 | 
|  | ddcom596 compare  0.000000987654321     1E+1     -> -1 | 
|  | ddcom597 compare  0.000000987654321     1E+2     -> -1 | 
|  | ddcom598 compare  0.000000987654321     1E+3     -> -1 | 
|  | ddcom599 compare  0.000000987654321     1E+4     -> -1 | 
|  |  | 
|  | -- check some unit-y traps | 
|  | ddcom600 compare   12            12.2345 -> -1 | 
|  | ddcom601 compare   12.0          12.2345 -> -1 | 
|  | ddcom602 compare   12.00         12.2345 -> -1 | 
|  | ddcom603 compare   12.000        12.2345 -> -1 | 
|  | ddcom604 compare   12.0000       12.2345 -> -1 | 
|  | ddcom605 compare   12.00000      12.2345 -> -1 | 
|  | ddcom606 compare   12.000000     12.2345 -> -1 | 
|  | ddcom607 compare   12.0000000    12.2345 -> -1 | 
|  | ddcom608 compare   12.00000000   12.2345 -> -1 | 
|  | ddcom609 compare   12.000000000  12.2345 -> -1 | 
|  | ddcom610 compare   12.1234 12            ->  1 | 
|  | ddcom611 compare   12.1234 12.0          ->  1 | 
|  | ddcom612 compare   12.1234 12.00         ->  1 | 
|  | ddcom613 compare   12.1234 12.000        ->  1 | 
|  | ddcom614 compare   12.1234 12.0000       ->  1 | 
|  | ddcom615 compare   12.1234 12.00000      ->  1 | 
|  | ddcom616 compare   12.1234 12.000000     ->  1 | 
|  | ddcom617 compare   12.1234 12.0000000    ->  1 | 
|  | ddcom618 compare   12.1234 12.00000000   ->  1 | 
|  | ddcom619 compare   12.1234 12.000000000  ->  1 | 
|  | ddcom620 compare  -12           -12.2345 ->  1 | 
|  | ddcom621 compare  -12.0         -12.2345 ->  1 | 
|  | ddcom622 compare  -12.00        -12.2345 ->  1 | 
|  | ddcom623 compare  -12.000       -12.2345 ->  1 | 
|  | ddcom624 compare  -12.0000      -12.2345 ->  1 | 
|  | ddcom625 compare  -12.00000     -12.2345 ->  1 | 
|  | ddcom626 compare  -12.000000    -12.2345 ->  1 | 
|  | ddcom627 compare  -12.0000000   -12.2345 ->  1 | 
|  | ddcom628 compare  -12.00000000  -12.2345 ->  1 | 
|  | ddcom629 compare  -12.000000000 -12.2345 ->  1 | 
|  | ddcom630 compare  -12.1234 -12           -> -1 | 
|  | ddcom631 compare  -12.1234 -12.0         -> -1 | 
|  | ddcom632 compare  -12.1234 -12.00        -> -1 | 
|  | ddcom633 compare  -12.1234 -12.000       -> -1 | 
|  | ddcom634 compare  -12.1234 -12.0000      -> -1 | 
|  | ddcom635 compare  -12.1234 -12.00000     -> -1 | 
|  | ddcom636 compare  -12.1234 -12.000000    -> -1 | 
|  | ddcom637 compare  -12.1234 -12.0000000   -> -1 | 
|  | ddcom638 compare  -12.1234 -12.00000000  -> -1 | 
|  | ddcom639 compare  -12.1234 -12.000000000 -> -1 | 
|  |  | 
|  | -- extended zeros | 
|  | ddcom640 compare   0     0   -> 0 | 
|  | ddcom641 compare   0    -0   -> 0 | 
|  | ddcom642 compare   0    -0.0 -> 0 | 
|  | ddcom643 compare   0     0.0 -> 0 | 
|  | ddcom644 compare  -0     0   -> 0 | 
|  | ddcom645 compare  -0    -0   -> 0 | 
|  | ddcom646 compare  -0    -0.0 -> 0 | 
|  | ddcom647 compare  -0     0.0 -> 0 | 
|  | ddcom648 compare   0.0   0   -> 0 | 
|  | ddcom649 compare   0.0  -0   -> 0 | 
|  | ddcom650 compare   0.0  -0.0 -> 0 | 
|  | ddcom651 compare   0.0   0.0 -> 0 | 
|  | ddcom652 compare  -0.0   0   -> 0 | 
|  | ddcom653 compare  -0.0  -0   -> 0 | 
|  | ddcom654 compare  -0.0  -0.0 -> 0 | 
|  | ddcom655 compare  -0.0   0.0 -> 0 | 
|  |  | 
|  | ddcom656 compare  -0E1   0.0 -> 0 | 
|  | ddcom657 compare  -0E2   0.0 -> 0 | 
|  | ddcom658 compare   0E1   0.0 -> 0 | 
|  | ddcom659 compare   0E2   0.0 -> 0 | 
|  | ddcom660 compare  -0E1   0   -> 0 | 
|  | ddcom661 compare  -0E2   0   -> 0 | 
|  | ddcom662 compare   0E1   0   -> 0 | 
|  | ddcom663 compare   0E2   0   -> 0 | 
|  | ddcom664 compare  -0E1  -0E1 -> 0 | 
|  | ddcom665 compare  -0E2  -0E1 -> 0 | 
|  | ddcom666 compare   0E1  -0E1 -> 0 | 
|  | ddcom667 compare   0E2  -0E1 -> 0 | 
|  | ddcom668 compare  -0E1  -0E2 -> 0 | 
|  | ddcom669 compare  -0E2  -0E2 -> 0 | 
|  | ddcom670 compare   0E1  -0E2 -> 0 | 
|  | ddcom671 compare   0E2  -0E2 -> 0 | 
|  | ddcom672 compare  -0E1   0E1 -> 0 | 
|  | ddcom673 compare  -0E2   0E1 -> 0 | 
|  | ddcom674 compare   0E1   0E1 -> 0 | 
|  | ddcom675 compare   0E2   0E1 -> 0 | 
|  | ddcom676 compare  -0E1   0E2 -> 0 | 
|  | ddcom677 compare  -0E2   0E2 -> 0 | 
|  | ddcom678 compare   0E1   0E2 -> 0 | 
|  | ddcom679 compare   0E2   0E2 -> 0 | 
|  |  | 
|  | -- trailing zeros; unit-y | 
|  | ddcom680 compare   12    12           -> 0 | 
|  | ddcom681 compare   12    12.0         -> 0 | 
|  | ddcom682 compare   12    12.00        -> 0 | 
|  | ddcom683 compare   12    12.000       -> 0 | 
|  | ddcom684 compare   12    12.0000      -> 0 | 
|  | ddcom685 compare   12    12.00000     -> 0 | 
|  | ddcom686 compare   12    12.000000    -> 0 | 
|  | ddcom687 compare   12    12.0000000   -> 0 | 
|  | ddcom688 compare   12    12.00000000  -> 0 | 
|  | ddcom689 compare   12    12.000000000 -> 0 | 
|  | ddcom690 compare   12              12 -> 0 | 
|  | ddcom691 compare   12.0            12 -> 0 | 
|  | ddcom692 compare   12.00           12 -> 0 | 
|  | ddcom693 compare   12.000          12 -> 0 | 
|  | ddcom694 compare   12.0000         12 -> 0 | 
|  | ddcom695 compare   12.00000        12 -> 0 | 
|  | ddcom696 compare   12.000000       12 -> 0 | 
|  | ddcom697 compare   12.0000000      12 -> 0 | 
|  | ddcom698 compare   12.00000000     12 -> 0 | 
|  | ddcom699 compare   12.000000000    12 -> 0 | 
|  |  | 
|  | -- first, second, & last digit | 
|  | ddcom700 compare   1234567890123456 1234567890123455 -> 1 | 
|  | ddcom701 compare   1234567890123456 1234567890123456 -> 0 | 
|  | ddcom702 compare   1234567890123456 1234567890123457 -> -1 | 
|  | ddcom703 compare   1234567890123456 0234567890123456 -> 1 | 
|  | ddcom704 compare   1234567890123456 1234567890123456 -> 0 | 
|  | ddcom705 compare   1234567890123456 2234567890123456 -> -1 | 
|  | ddcom706 compare   1134567890123456 1034567890123456 -> 1 | 
|  | ddcom707 compare   1134567890123456 1134567890123456 -> 0 | 
|  | ddcom708 compare   1134567890123456 1234567890123456 -> -1 | 
|  |  | 
|  | -- miscellaneous | 
|  | ddcom721 compare 12345678000 1 -> 1 | 
|  | ddcom722 compare 1 12345678000 -> -1 | 
|  | ddcom723 compare 1234567800  1 -> 1 | 
|  | ddcom724 compare 1 1234567800  -> -1 | 
|  | ddcom725 compare 1234567890  1 -> 1 | 
|  | ddcom726 compare 1 1234567890  -> -1 | 
|  | ddcom727 compare 1234567891  1 -> 1 | 
|  | ddcom728 compare 1 1234567891  -> -1 | 
|  | ddcom729 compare 12345678901 1 -> 1 | 
|  | ddcom730 compare 1 12345678901 -> -1 | 
|  | ddcom731 compare 1234567896  1 -> 1 | 
|  | ddcom732 compare 1 1234567896  -> -1 | 
|  |  | 
|  | -- residue cases at lower precision | 
|  | ddcom740 compare  1  0.9999999  -> 1 | 
|  | ddcom741 compare  1  0.999999   -> 1 | 
|  | ddcom742 compare  1  0.99999    -> 1 | 
|  | ddcom743 compare  1  1.0000     -> 0 | 
|  | ddcom744 compare  1  1.00001    -> -1 | 
|  | ddcom745 compare  1  1.000001   -> -1 | 
|  | ddcom746 compare  1  1.0000001  -> -1 | 
|  | ddcom750 compare  0.9999999  1  -> -1 | 
|  | ddcom751 compare  0.999999   1  -> -1 | 
|  | ddcom752 compare  0.99999    1  -> -1 | 
|  | ddcom753 compare  1.0000     1  -> 0 | 
|  | ddcom754 compare  1.00001    1  -> 1 | 
|  | ddcom755 compare  1.000001   1  -> 1 | 
|  | ddcom756 compare  1.0000001  1  -> 1 | 
|  |  | 
|  | -- Specials | 
|  | ddcom780 compare  Inf  -Inf   ->  1 | 
|  | ddcom781 compare  Inf  -1000  ->  1 | 
|  | ddcom782 compare  Inf  -1     ->  1 | 
|  | ddcom783 compare  Inf  -0     ->  1 | 
|  | ddcom784 compare  Inf   0     ->  1 | 
|  | ddcom785 compare  Inf   1     ->  1 | 
|  | ddcom786 compare  Inf   1000  ->  1 | 
|  | ddcom787 compare  Inf   Inf   ->  0 | 
|  | ddcom788 compare -1000  Inf   -> -1 | 
|  | ddcom789 compare -Inf   Inf   -> -1 | 
|  | ddcom790 compare -1     Inf   -> -1 | 
|  | ddcom791 compare -0     Inf   -> -1 | 
|  | ddcom792 compare  0     Inf   -> -1 | 
|  | ddcom793 compare  1     Inf   -> -1 | 
|  | ddcom794 compare  1000  Inf   -> -1 | 
|  | ddcom795 compare  Inf   Inf   ->  0 | 
|  |  | 
|  | ddcom800 compare -Inf  -Inf   ->  0 | 
|  | ddcom801 compare -Inf  -1000  -> -1 | 
|  | ddcom802 compare -Inf  -1     -> -1 | 
|  | ddcom803 compare -Inf  -0     -> -1 | 
|  | ddcom804 compare -Inf   0     -> -1 | 
|  | ddcom805 compare -Inf   1     -> -1 | 
|  | ddcom806 compare -Inf   1000  -> -1 | 
|  | ddcom807 compare -Inf   Inf   -> -1 | 
|  | ddcom808 compare -Inf  -Inf   ->  0 | 
|  | ddcom809 compare -1000 -Inf   ->  1 | 
|  | ddcom810 compare -1    -Inf   ->  1 | 
|  | ddcom811 compare -0    -Inf   ->  1 | 
|  | ddcom812 compare  0    -Inf   ->  1 | 
|  | ddcom813 compare  1    -Inf   ->  1 | 
|  | ddcom814 compare  1000 -Inf   ->  1 | 
|  | ddcom815 compare  Inf  -Inf   ->  1 | 
|  |  | 
|  | ddcom821 compare  NaN -Inf    ->  NaN | 
|  | ddcom822 compare  NaN -1000   ->  NaN | 
|  | ddcom823 compare  NaN -1      ->  NaN | 
|  | ddcom824 compare  NaN -0      ->  NaN | 
|  | ddcom825 compare  NaN  0      ->  NaN | 
|  | ddcom826 compare  NaN  1      ->  NaN | 
|  | ddcom827 compare  NaN  1000   ->  NaN | 
|  | ddcom828 compare  NaN  Inf    ->  NaN | 
|  | ddcom829 compare  NaN  NaN    ->  NaN | 
|  | ddcom830 compare -Inf  NaN    ->  NaN | 
|  | ddcom831 compare -1000 NaN    ->  NaN | 
|  | ddcom832 compare -1    NaN    ->  NaN | 
|  | ddcom833 compare -0    NaN    ->  NaN | 
|  | ddcom834 compare  0    NaN    ->  NaN | 
|  | ddcom835 compare  1    NaN    ->  NaN | 
|  | ddcom836 compare  1000 NaN    ->  NaN | 
|  | ddcom837 compare  Inf  NaN    ->  NaN | 
|  | ddcom838 compare -NaN -NaN    -> -NaN | 
|  | ddcom839 compare +NaN -NaN    ->  NaN | 
|  | ddcom840 compare -NaN +NaN    -> -NaN | 
|  |  | 
|  | ddcom841 compare  sNaN -Inf   ->  NaN  Invalid_operation | 
|  | ddcom842 compare  sNaN -1000  ->  NaN  Invalid_operation | 
|  | ddcom843 compare  sNaN -1     ->  NaN  Invalid_operation | 
|  | ddcom844 compare  sNaN -0     ->  NaN  Invalid_operation | 
|  | ddcom845 compare  sNaN  0     ->  NaN  Invalid_operation | 
|  | ddcom846 compare  sNaN  1     ->  NaN  Invalid_operation | 
|  | ddcom847 compare  sNaN  1000  ->  NaN  Invalid_operation | 
|  | ddcom848 compare  sNaN  NaN   ->  NaN  Invalid_operation | 
|  | ddcom849 compare  sNaN sNaN   ->  NaN  Invalid_operation | 
|  | ddcom850 compare  NaN  sNaN   ->  NaN  Invalid_operation | 
|  | ddcom851 compare -Inf  sNaN   ->  NaN  Invalid_operation | 
|  | ddcom852 compare -1000 sNaN   ->  NaN  Invalid_operation | 
|  | ddcom853 compare -1    sNaN   ->  NaN  Invalid_operation | 
|  | ddcom854 compare -0    sNaN   ->  NaN  Invalid_operation | 
|  | ddcom855 compare  0    sNaN   ->  NaN  Invalid_operation | 
|  | ddcom856 compare  1    sNaN   ->  NaN  Invalid_operation | 
|  | ddcom857 compare  1000 sNaN   ->  NaN  Invalid_operation | 
|  | ddcom858 compare  Inf  sNaN   ->  NaN  Invalid_operation | 
|  | ddcom859 compare  NaN  sNaN   ->  NaN  Invalid_operation | 
|  |  | 
|  | -- propagating NaNs | 
|  | ddcom860 compare  NaN9 -Inf   ->  NaN9 | 
|  | ddcom861 compare  NaN8  999   ->  NaN8 | 
|  | ddcom862 compare  NaN77 Inf   ->  NaN77 | 
|  | ddcom863 compare -NaN67 NaN5  -> -NaN67 | 
|  | ddcom864 compare -Inf  -NaN4  -> -NaN4 | 
|  | ddcom865 compare -999  -NaN33 -> -NaN33 | 
|  | ddcom866 compare  Inf   NaN2  ->  NaN2 | 
|  | ddcom867 compare -NaN41 -NaN42 -> -NaN41 | 
|  | ddcom868 compare +NaN41 -NaN42 ->  NaN41 | 
|  | ddcom869 compare -NaN41 +NaN42 -> -NaN41 | 
|  | ddcom870 compare +NaN41 +NaN42 ->  NaN41 | 
|  |  | 
|  | ddcom871 compare -sNaN99 -Inf    -> -NaN99 Invalid_operation | 
|  | ddcom872 compare  sNaN98 -11     ->  NaN98 Invalid_operation | 
|  | ddcom873 compare  sNaN97  NaN    ->  NaN97 Invalid_operation | 
|  | ddcom874 compare  sNaN16 sNaN94  ->  NaN16 Invalid_operation | 
|  | ddcom875 compare  NaN85  sNaN83  ->  NaN83 Invalid_operation | 
|  | ddcom876 compare -Inf    sNaN92  ->  NaN92 Invalid_operation | 
|  | ddcom877 compare  088    sNaN81  ->  NaN81 Invalid_operation | 
|  | ddcom878 compare  Inf    sNaN90  ->  NaN90 Invalid_operation | 
|  | ddcom879 compare  NaN   -sNaN89  -> -NaN89 Invalid_operation | 
|  |  | 
|  | -- wide range | 
|  | ddcom880 compare +1.23456789012345E-0 9E+384 -> -1 | 
|  | ddcom881 compare 9E+384 +1.23456789012345E-0 ->  1 | 
|  | ddcom882 compare +0.100 9E-383               ->  1 | 
|  | ddcom883 compare 9E-383 +0.100               -> -1 | 
|  | ddcom885 compare -1.23456789012345E-0 9E+384 -> -1 | 
|  | ddcom886 compare 9E+384 -1.23456789012345E-0 ->  1 | 
|  | ddcom887 compare -0.100 9E-383               -> -1 | 
|  | ddcom888 compare 9E-383 -0.100               ->  1 | 
|  |  | 
|  | -- spread zeros | 
|  | ddcom900 compare   0E-383  0       ->  0 | 
|  | ddcom901 compare   0E-383 -0       ->  0 | 
|  | ddcom902 compare  -0E-383  0       ->  0 | 
|  | ddcom903 compare  -0E-383 -0       ->  0 | 
|  | ddcom904 compare   0E-383  0E+384  ->  0 | 
|  | ddcom905 compare   0E-383 -0E+384  ->  0 | 
|  | ddcom906 compare  -0E-383  0E+384  ->  0 | 
|  | ddcom907 compare  -0E-383 -0E+384  ->  0 | 
|  | ddcom908 compare   0       0E+384  ->  0 | 
|  | ddcom909 compare   0      -0E+384  ->  0 | 
|  | ddcom910 compare  -0       0E+384  ->  0 | 
|  | ddcom911 compare  -0      -0E+384  ->  0 | 
|  | ddcom930 compare   0E+384  0       ->  0 | 
|  | ddcom931 compare   0E+384 -0       ->  0 | 
|  | ddcom932 compare  -0E+384  0       ->  0 | 
|  | ddcom933 compare  -0E+384 -0       ->  0 | 
|  | ddcom934 compare   0E+384  0E-383  ->  0 | 
|  | ddcom935 compare   0E+384 -0E-383  ->  0 | 
|  | ddcom936 compare  -0E+384  0E-383  ->  0 | 
|  | ddcom937 compare  -0E+384 -0E-383  ->  0 | 
|  | ddcom938 compare   0       0E-383  ->  0 | 
|  | ddcom939 compare   0      -0E-383  ->  0 | 
|  | ddcom940 compare  -0       0E-383  ->  0 | 
|  | ddcom941 compare  -0      -0E-383  ->  0 | 
|  |  | 
|  | -- signs | 
|  | ddcom961 compare  1e+77  1e+11 ->  1 | 
|  | ddcom962 compare  1e+77 -1e+11 ->  1 | 
|  | ddcom963 compare -1e+77  1e+11 -> -1 | 
|  | ddcom964 compare -1e+77 -1e+11 -> -1 | 
|  | ddcom965 compare  1e-77  1e-11 -> -1 | 
|  | ddcom966 compare  1e-77 -1e-11 ->  1 | 
|  | ddcom967 compare -1e-77  1e-11 -> -1 | 
|  | ddcom968 compare -1e-77 -1e-11 ->  1 | 
|  |  | 
|  | -- full alignment range, both ways | 
|  | ddcomp1001 compare 1 1.000000000000000  -> 0 | 
|  | ddcomp1002 compare 1 1.00000000000000   -> 0 | 
|  | ddcomp1003 compare 1 1.0000000000000    -> 0 | 
|  | ddcomp1004 compare 1 1.000000000000     -> 0 | 
|  | ddcomp1005 compare 1 1.00000000000      -> 0 | 
|  | ddcomp1006 compare 1 1.0000000000       -> 0 | 
|  | ddcomp1007 compare 1 1.000000000        -> 0 | 
|  | ddcomp1008 compare 1 1.00000000         -> 0 | 
|  | ddcomp1009 compare 1 1.0000000          -> 0 | 
|  | ddcomp1010 compare 1 1.000000           -> 0 | 
|  | ddcomp1011 compare 1 1.00000            -> 0 | 
|  | ddcomp1012 compare 1 1.0000             -> 0 | 
|  | ddcomp1013 compare 1 1.000              -> 0 | 
|  | ddcomp1014 compare 1 1.00               -> 0 | 
|  | ddcomp1015 compare 1 1.0                -> 0 | 
|  | ddcomp1021 compare 1.000000000000000  1 -> 0 | 
|  | ddcomp1022 compare 1.00000000000000   1 -> 0 | 
|  | ddcomp1023 compare 1.0000000000000    1 -> 0 | 
|  | ddcomp1024 compare 1.000000000000     1 -> 0 | 
|  | ddcomp1025 compare 1.00000000000      1 -> 0 | 
|  | ddcomp1026 compare 1.0000000000       1 -> 0 | 
|  | ddcomp1027 compare 1.000000000        1 -> 0 | 
|  | ddcomp1028 compare 1.00000000         1 -> 0 | 
|  | ddcomp1029 compare 1.0000000          1 -> 0 | 
|  | ddcomp1030 compare 1.000000           1 -> 0 | 
|  | ddcomp1031 compare 1.00000            1 -> 0 | 
|  | ddcomp1032 compare 1.0000             1 -> 0 | 
|  | ddcomp1033 compare 1.000              1 -> 0 | 
|  | ddcomp1034 compare 1.00               1 -> 0 | 
|  | ddcomp1035 compare 1.0                1 -> 0 | 
|  |  | 
|  | -- check MSD always detected non-zero | 
|  | ddcomp1040 compare 0 0.000000000000000  -> 0 | 
|  | ddcomp1041 compare 0 1.000000000000000  -> -1 | 
|  | ddcomp1042 compare 0 2.000000000000000  -> -1 | 
|  | ddcomp1043 compare 0 3.000000000000000  -> -1 | 
|  | ddcomp1044 compare 0 4.000000000000000  -> -1 | 
|  | ddcomp1045 compare 0 5.000000000000000  -> -1 | 
|  | ddcomp1046 compare 0 6.000000000000000  -> -1 | 
|  | ddcomp1047 compare 0 7.000000000000000  -> -1 | 
|  | ddcomp1048 compare 0 8.000000000000000  -> -1 | 
|  | ddcomp1049 compare 0 9.000000000000000  -> -1 | 
|  | ddcomp1050 compare 0.000000000000000  0 -> 0 | 
|  | ddcomp1051 compare 1.000000000000000  0 -> 1 | 
|  | ddcomp1052 compare 2.000000000000000  0 -> 1 | 
|  | ddcomp1053 compare 3.000000000000000  0 -> 1 | 
|  | ddcomp1054 compare 4.000000000000000  0 -> 1 | 
|  | ddcomp1055 compare 5.000000000000000  0 -> 1 | 
|  | ddcomp1056 compare 6.000000000000000  0 -> 1 | 
|  | ddcomp1057 compare 7.000000000000000  0 -> 1 | 
|  | ddcomp1058 compare 8.000000000000000  0 -> 1 | 
|  | ddcomp1059 compare 9.000000000000000  0 -> 1 | 
|  |  | 
|  | -- Null tests | 
|  | ddcom9990 compare 10  # -> NaN Invalid_operation | 
|  | ddcom9991 compare  # 10 -> NaN Invalid_operation |