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      1 ------------------------------------------------------------------------
      2 -- nexttoward.decTest -- decimal next toward rhs [754r nextafter]     --
      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 extended:    1
     23 precision:   9
     24 rounding:    half_up
     25 maxExponent: 384
     26 minexponent: -383
     27 
     28 -- Sanity check with a scattering of numerics
     29 nextt001 nexttoward   10    10   ->  10
     30 nextt002 nexttoward  -10   -10   -> -10
     31 nextt003 nexttoward   1     10   ->  1.00000001
     32 nextt004 nexttoward   1    -10   ->  0.999999999
     33 nextt005 nexttoward  -1     10   -> -0.999999999
     34 nextt006 nexttoward  -1    -10   -> -1.00000001
     35 nextt007 nexttoward   0     10   ->  1E-391       Underflow Subnormal Inexact Rounded
     36 nextt008 nexttoward   0    -10   -> -1E-391       Underflow Subnormal Inexact Rounded
     37 nextt009 nexttoward   9.99999999E+384 +Infinity ->  Infinity Overflow Inexact Rounded
     38 nextt010 nexttoward  -9.99999999E+384 -Infinity -> -Infinity Overflow Inexact Rounded
     39 
     40 ------- lhs=rhs
     41 -- finites
     42 nextt101 nexttoward          7       7 ->  7
     43 nextt102 nexttoward         -7      -7 -> -7
     44 nextt103 nexttoward         75      75 ->  75
     45 nextt104 nexttoward        -75     -75 -> -75
     46 nextt105 nexttoward       7.50     7.5 ->  7.50
     47 nextt106 nexttoward      -7.50   -7.50 -> -7.50
     48 nextt107 nexttoward       7.500 7.5000 ->  7.500
     49 nextt108 nexttoward      -7.500   -7.5 -> -7.500
     50 
     51 -- zeros
     52 nextt111 nexttoward          0       0 ->  0
     53 nextt112 nexttoward         -0      -0 -> -0
     54 nextt113 nexttoward       0E+4       0 ->  0E+4
     55 nextt114 nexttoward      -0E+4      -0 -> -0E+4
     56 nextt115 nexttoward     0.0000 0.00000 ->  0.0000
     57 nextt116 nexttoward    -0.0000   -0.00 -> -0.0000
     58 nextt117 nexttoward      0E-141      0 ->  0E-141
     59 nextt118 nexttoward     -0E-141   -000 -> -0E-141
     60 
     61 -- full coefficients, alternating bits
     62 nextt121 nexttoward   268268268    268268268 ->   268268268
     63 nextt122 nexttoward  -268268268   -268268268 ->  -268268268
     64 nextt123 nexttoward   134134134    134134134 ->   134134134
     65 nextt124 nexttoward  -134134134   -134134134 ->  -134134134
     66 
     67 -- Nmax, Nmin, Ntiny
     68 nextt131 nexttoward  9.99999999E+384  9.99999999E+384   ->   9.99999999E+384
     69 nextt132 nexttoward  1E-383           1E-383            ->   1E-383
     70 nextt133 nexttoward  1.00000000E-383  1.00000000E-383   ->   1.00000000E-383
     71 nextt134 nexttoward  1E-391           1E-391            ->   1E-391
     72 
     73 nextt135 nexttoward  -1E-391          -1E-391           ->  -1E-391
     74 nextt136 nexttoward  -1.00000000E-383 -1.00000000E-383  ->  -1.00000000E-383
     75 nextt137 nexttoward  -1E-383          -1E-383           ->  -1E-383
     76 nextt138 nexttoward  -9.99999999E+384 -9.99999999E+384  ->  -9.99999999E+384
     77 
     78 ------- lhs<rhs
     79 nextt201 nexttoward  0.999999995 Infinity ->   0.999999996
     80 nextt202 nexttoward  0.999999996 Infinity ->   0.999999997
     81 nextt203 nexttoward  0.999999997 Infinity ->   0.999999998
     82 nextt204 nexttoward  0.999999998 Infinity ->   0.999999999
     83 nextt205 nexttoward  0.999999999 Infinity ->   1.00000000
     84 nextt206 nexttoward  1.00000000  Infinity ->   1.00000001
     85 nextt207 nexttoward  1.0         Infinity ->   1.00000001
     86 nextt208 nexttoward  1           Infinity ->   1.00000001
     87 nextt209 nexttoward  1.00000001  Infinity ->   1.00000002
     88 nextt210 nexttoward  1.00000002  Infinity ->   1.00000003
     89 nextt211 nexttoward  1.00000003  Infinity ->   1.00000004
     90 nextt212 nexttoward  1.00000004  Infinity ->   1.00000005
     91 nextt213 nexttoward  1.00000005  Infinity ->   1.00000006
     92 nextt214 nexttoward  1.00000006  Infinity ->   1.00000007
     93 nextt215 nexttoward  1.00000007  Infinity ->   1.00000008
     94 nextt216 nexttoward  1.00000008  Infinity ->   1.00000009
     95 nextt217 nexttoward  1.00000009  Infinity ->   1.00000010
     96 nextt218 nexttoward  1.00000010  Infinity ->   1.00000011
     97 nextt219 nexttoward  1.00000011  Infinity ->   1.00000012
     98 
     99 nextt221 nexttoward -0.999999995 Infinity ->  -0.999999994
    100 nextt222 nexttoward -0.999999996 Infinity ->  -0.999999995
    101 nextt223 nexttoward -0.999999997 Infinity ->  -0.999999996
    102 nextt224 nexttoward -0.999999998 Infinity ->  -0.999999997
    103 nextt225 nexttoward -0.999999999 Infinity ->  -0.999999998
    104 nextt226 nexttoward -1.00000000  Infinity ->  -0.999999999
    105 nextt227 nexttoward -1.0         Infinity ->  -0.999999999
    106 nextt228 nexttoward -1           Infinity ->  -0.999999999
    107 nextt229 nexttoward -1.00000001  Infinity ->  -1.00000000
    108 nextt230 nexttoward -1.00000002  Infinity ->  -1.00000001
    109 nextt231 nexttoward -1.00000003  Infinity ->  -1.00000002
    110 nextt232 nexttoward -1.00000004  Infinity ->  -1.00000003
    111 nextt233 nexttoward -1.00000005  Infinity ->  -1.00000004
    112 nextt234 nexttoward -1.00000006  Infinity ->  -1.00000005
    113 nextt235 nexttoward -1.00000007  Infinity ->  -1.00000006
    114 nextt236 nexttoward -1.00000008  Infinity ->  -1.00000007
    115 nextt237 nexttoward -1.00000009  Infinity ->  -1.00000008
    116 nextt238 nexttoward -1.00000010  Infinity ->  -1.00000009
    117 nextt239 nexttoward -1.00000011  Infinity ->  -1.00000010
    118 nextt240 nexttoward -1.00000012  Infinity ->  -1.00000011
    119 
    120 -- input operand is >precision
    121 nextt241 nexttoward  1.00000010998  Infinity ->   1.00000011
    122 nextt242 nexttoward  1.00000010999  Infinity ->   1.00000011
    123 nextt243 nexttoward  1.00000011000  Infinity ->   1.00000012
    124 nextt244 nexttoward  1.00000011001  Infinity ->   1.00000012
    125 nextt245 nexttoward  1.00000011002  Infinity ->   1.00000012
    126 nextt246 nexttoward  1.00000011002  Infinity ->   1.00000012
    127 nextt247 nexttoward  1.00000011052  Infinity ->   1.00000012
    128 nextt248 nexttoward  1.00000011552  Infinity ->   1.00000012
    129 nextt249 nexttoward -1.00000010998  Infinity ->  -1.00000010
    130 nextt250 nexttoward -1.00000010999  Infinity ->  -1.00000010
    131 nextt251 nexttoward -1.00000011000  Infinity ->  -1.00000010
    132 nextt252 nexttoward -1.00000011001  Infinity ->  -1.00000011
    133 nextt253 nexttoward -1.00000011002  Infinity ->  -1.00000011
    134 nextt254 nexttoward -1.00000011002  Infinity ->  -1.00000011
    135 nextt255 nexttoward -1.00000011052  Infinity ->  -1.00000011
    136 nextt256 nexttoward -1.00000011552  Infinity ->  -1.00000011
    137 -- ultra-tiny inputs
    138 nextt260 nexttoward  1E-99999       Infinity ->   1E-391          Underflow Subnormal Inexact Rounded
    139 nextt261 nexttoward  1E-999999999   Infinity ->   1E-391          Underflow Subnormal Inexact Rounded
    140 nextt262 nexttoward  1E-391         Infinity ->   2E-391          Underflow Subnormal Inexact Rounded
    141 nextt263 nexttoward -1E-99999       Infinity ->  -0E-391          Underflow Subnormal Inexact Rounded Clamped
    142 nextt264 nexttoward -1E-999999999   Infinity ->  -0E-391          Underflow Subnormal Inexact Rounded Clamped
    143 nextt265 nexttoward -1E-391         Infinity ->  -0E-391          Underflow Subnormal Inexact Rounded Clamped
    144 
    145 -- Zeros
    146 nextt300 nexttoward  0           Infinity ->  1E-391              Underflow Subnormal Inexact Rounded
    147 nextt301 nexttoward  0.00        Infinity ->  1E-391              Underflow Subnormal Inexact Rounded
    148 nextt302 nexttoward  0E-300      Infinity ->  1E-391              Underflow Subnormal Inexact Rounded
    149 nextt303 nexttoward  0E+300      Infinity ->  1E-391              Underflow Subnormal Inexact Rounded
    150 nextt304 nexttoward  0E+30000    Infinity ->  1E-391              Underflow Subnormal Inexact Rounded
    151 nextt305 nexttoward -0           Infinity ->  1E-391              Underflow Subnormal Inexact Rounded
    152 nextt306 nexttoward -0.00        Infinity ->  1E-391              Underflow Subnormal Inexact Rounded
    153 nextt307 nexttoward -0E-300      Infinity ->  1E-391              Underflow Subnormal Inexact Rounded
    154 nextt308 nexttoward -0E+300      Infinity ->  1E-391              Underflow Subnormal Inexact Rounded
    155 nextt309 nexttoward -0E+30000    Infinity ->  1E-391              Underflow Subnormal Inexact Rounded
    156 
    157 -- specials
    158 nextt350 nexttoward   Inf    Infinity ->  Infinity
    159 nextt351 nexttoward  -Inf    Infinity -> -9.99999999E+384
    160 nextt352 nexttoward   NaN    Infinity ->  NaN
    161 nextt353 nexttoward  sNaN    Infinity ->  NaN   Invalid_operation
    162 nextt354 nexttoward   NaN77  Infinity ->  NaN77
    163 nextt355 nexttoward  sNaN88  Infinity ->  NaN88 Invalid_operation
    164 nextt356 nexttoward  -NaN    Infinity -> -NaN
    165 nextt357 nexttoward -sNaN    Infinity -> -NaN   Invalid_operation
    166 nextt358 nexttoward  -NaN77  Infinity -> -NaN77
    167 nextt359 nexttoward -sNaN88  Infinity -> -NaN88 Invalid_operation
    168 
    169 -- Nmax, Nmin, Ntiny, subnormals
    170 maxExponent: 999
    171 minexponent: -999
    172 nextt370 nexttoward  9.99999999E+999   Infinity -> Infinity        Overflow Inexact Rounded
    173 nextt371 nexttoward  9.99999998E+999   Infinity -> 9.99999999E+999
    174 nextt372 nexttoward  1E-999            Infinity -> 1.00000001E-999
    175 nextt373 nexttoward  1.00000000E-999   Infinity -> 1.00000001E-999
    176 nextt374 nexttoward  0.999999999E-999  Infinity -> 1.00000000E-999
    177 nextt375 nexttoward  0.99999999E-999   Infinity -> 1.00000000E-999
    178 nextt376 nexttoward  9E-1007           Infinity -> 1.0E-1006       Underflow Subnormal Inexact Rounded
    179 nextt377 nexttoward  9.9E-1006         Infinity -> 1.00E-1005      Underflow Subnormal Inexact Rounded
    180 nextt378 nexttoward  9.9999E-1003      Infinity -> 1.00000E-1002   Underflow Subnormal Inexact Rounded
    181 nextt379 nexttoward  9.9999998E-1000   Infinity -> 9.9999999E-1000 Underflow Subnormal Inexact Rounded
    182 nextt380 nexttoward  9.9999997E-1000   Infinity -> 9.9999998E-1000 Underflow Subnormal Inexact Rounded
    183 nextt381 nexttoward  0E-1007           Infinity -> 1E-1007         Underflow Subnormal Inexact Rounded
    184 nextt382 nexttoward  1E-1007           Infinity -> 2E-1007         Underflow Subnormal Inexact Rounded
    185 nextt383 nexttoward  2E-1007           Infinity -> 3E-1007         Underflow Subnormal Inexact Rounded
    186 
    187 nextt385 nexttoward  -0E-1007          Infinity ->  1E-1007        Underflow Subnormal Inexact Rounded
    188 nextt386 nexttoward  -1E-1007          Infinity -> -0E-1007        Underflow Subnormal Inexact Rounded Clamped
    189 nextt387 nexttoward  -2E-1007          Infinity -> -1E-1007        Underflow Subnormal Inexact Rounded
    190 nextt388 nexttoward  -10E-1007         Infinity -> -9E-1007        Underflow Subnormal Inexact Rounded
    191 nextt389 nexttoward  -100E-1007        Infinity -> -9.9E-1006      Underflow Subnormal Inexact Rounded
    192 nextt390 nexttoward  -100000E-1007     Infinity -> -9.9999E-1003   Underflow Subnormal Inexact Rounded
    193 nextt391 nexttoward  -1.0000E-999      Infinity -> -9.9999999E-1000  Underflow Subnormal Inexact Rounded
    194 nextt392 nexttoward  -1.00000000E-999  Infinity -> -9.9999999E-1000  Underflow Subnormal Inexact Rounded
    195 nextt393 nexttoward  -1E-999           Infinity -> -9.9999999E-1000  Underflow Subnormal Inexact Rounded
    196 nextt394 nexttoward  -9.99999998E+999  Infinity -> -9.99999997E+999
    197 nextt395 nexttoward  -9.99999999E+999  Infinity -> -9.99999998E+999
    198 
    199 ------- lhs>rhs
    200 maxExponent: 384
    201 minexponent: -383
    202 nextt401 nexttoward  0.999999995  -Infinity ->   0.999999994
    203 nextt402 nexttoward  0.999999996  -Infinity ->   0.999999995
    204 nextt403 nexttoward  0.999999997  -Infinity ->   0.999999996
    205 nextt404 nexttoward  0.999999998  -Infinity ->   0.999999997
    206 nextt405 nexttoward  0.999999999  -Infinity ->   0.999999998
    207 nextt406 nexttoward  1.00000000   -Infinity ->   0.999999999
    208 nextt407 nexttoward  1.0          -Infinity ->   0.999999999
    209 nextt408 nexttoward  1            -Infinity ->   0.999999999
    210 nextt409 nexttoward  1.00000001   -Infinity ->   1.00000000
    211 nextt410 nexttoward  1.00000002   -Infinity ->   1.00000001
    212 nextt411 nexttoward  1.00000003   -Infinity ->   1.00000002
    213 nextt412 nexttoward  1.00000004   -Infinity ->   1.00000003
    214 nextt413 nexttoward  1.00000005   -Infinity ->   1.00000004
    215 nextt414 nexttoward  1.00000006   -Infinity ->   1.00000005
    216 nextt415 nexttoward  1.00000007   -Infinity ->   1.00000006
    217 nextt416 nexttoward  1.00000008   -Infinity ->   1.00000007
    218 nextt417 nexttoward  1.00000009   -Infinity ->   1.00000008
    219 nextt418 nexttoward  1.00000010   -Infinity ->   1.00000009
    220 nextt419 nexttoward  1.00000011   -Infinity ->   1.00000010
    221 nextt420 nexttoward  1.00000012   -Infinity ->   1.00000011
    222 
    223 nextt421 nexttoward -0.999999995  -Infinity ->  -0.999999996
    224 nextt422 nexttoward -0.999999996  -Infinity ->  -0.999999997
    225 nextt423 nexttoward -0.999999997  -Infinity ->  -0.999999998
    226 nextt424 nexttoward -0.999999998  -Infinity ->  -0.999999999
    227 nextt425 nexttoward -0.999999999  -Infinity ->  -1.00000000
    228 nextt426 nexttoward -1.00000000   -Infinity ->  -1.00000001
    229 nextt427 nexttoward -1.0          -Infinity ->  -1.00000001
    230 nextt428 nexttoward -1            -Infinity ->  -1.00000001
    231 nextt429 nexttoward -1.00000001   -Infinity ->  -1.00000002
    232 nextt430 nexttoward -1.00000002   -Infinity ->  -1.00000003
    233 nextt431 nexttoward -1.00000003   -Infinity ->  -1.00000004
    234 nextt432 nexttoward -1.00000004   -Infinity ->  -1.00000005
    235 nextt433 nexttoward -1.00000005   -Infinity ->  -1.00000006
    236 nextt434 nexttoward -1.00000006   -Infinity ->  -1.00000007
    237 nextt435 nexttoward -1.00000007   -Infinity ->  -1.00000008
    238 nextt436 nexttoward -1.00000008   -Infinity ->  -1.00000009
    239 nextt437 nexttoward -1.00000009   -Infinity ->  -1.00000010
    240 nextt438 nexttoward -1.00000010   -Infinity ->  -1.00000011
    241 nextt439 nexttoward -1.00000011   -Infinity ->  -1.00000012
    242 
    243 -- input operand is >precision
    244 nextt441 nexttoward  1.00000010998   -Infinity ->   1.00000010
    245 nextt442 nexttoward  1.00000010999   -Infinity ->   1.00000010
    246 nextt443 nexttoward  1.00000011000   -Infinity ->   1.00000010
    247 nextt444 nexttoward  1.00000011001   -Infinity ->   1.00000011
    248 nextt445 nexttoward  1.00000011002   -Infinity ->   1.00000011
    249 nextt446 nexttoward  1.00000011002   -Infinity ->   1.00000011
    250 nextt447 nexttoward  1.00000011052   -Infinity ->   1.00000011
    251 nextt448 nexttoward  1.00000011552   -Infinity ->   1.00000011
    252 nextt449 nexttoward -1.00000010998   -Infinity ->  -1.00000011
    253 nextt450 nexttoward -1.00000010999   -Infinity ->  -1.00000011
    254 nextt451 nexttoward -1.00000011000   -Infinity ->  -1.00000012
    255 nextt452 nexttoward -1.00000011001   -Infinity ->  -1.00000012
    256 nextt453 nexttoward -1.00000011002   -Infinity ->  -1.00000012
    257 nextt454 nexttoward -1.00000011002   -Infinity ->  -1.00000012
    258 nextt455 nexttoward -1.00000011052   -Infinity ->  -1.00000012
    259 nextt456 nexttoward -1.00000011552   -Infinity ->  -1.00000012
    260 -- ultra-tiny inputs
    261 nextt460 nexttoward  1E-99999        -Infinity ->   0E-391     Underflow Subnormal Inexact Rounded Clamped
    262 nextt461 nexttoward  1E-999999999    -Infinity ->   0E-391     Underflow Subnormal Inexact Rounded Clamped
    263 nextt462 nexttoward  1E-391          -Infinity ->   0E-391     Underflow Subnormal Inexact Rounded Clamped
    264 nextt463 nexttoward -1E-99999        -Infinity ->  -1E-391     Underflow Subnormal Inexact Rounded
    265 nextt464 nexttoward -1E-999999999    -Infinity ->  -1E-391     Underflow Subnormal Inexact Rounded
    266 nextt465 nexttoward -1E-391          -Infinity ->  -2E-391     Underflow Subnormal Inexact Rounded
    267 
    268 -- Zeros
    269 nextt500 nexttoward -0            -Infinity -> -1E-391         Underflow Subnormal Inexact Rounded
    270 nextt501 nexttoward  0            -Infinity -> -1E-391         Underflow Subnormal Inexact Rounded
    271 nextt502 nexttoward  0.00         -Infinity -> -1E-391         Underflow Subnormal Inexact Rounded
    272 nextt503 nexttoward -0.00         -Infinity -> -1E-391         Underflow Subnormal Inexact Rounded
    273 nextt504 nexttoward  0E-300       -Infinity -> -1E-391         Underflow Subnormal Inexact Rounded
    274 nextt505 nexttoward  0E+300       -Infinity -> -1E-391         Underflow Subnormal Inexact Rounded
    275 nextt506 nexttoward  0E+30000     -Infinity -> -1E-391         Underflow Subnormal Inexact Rounded
    276 nextt507 nexttoward -0E+30000     -Infinity -> -1E-391         Underflow Subnormal Inexact Rounded
    277 nextt508 nexttoward  0.00         -0.0000   -> -0.00
    278 
    279 -- specials
    280 nextt550 nexttoward   Inf     -Infinity ->  9.99999999E+384
    281 nextt551 nexttoward  -Inf     -Infinity -> -Infinity
    282 nextt552 nexttoward   NaN     -Infinity ->  NaN
    283 nextt553 nexttoward  sNaN     -Infinity ->  NaN   Invalid_operation
    284 nextt554 nexttoward   NaN77   -Infinity ->  NaN77
    285 nextt555 nexttoward  sNaN88   -Infinity ->  NaN88 Invalid_operation
    286 nextt556 nexttoward  -NaN     -Infinity -> -NaN
    287 nextt557 nexttoward -sNaN     -Infinity -> -NaN   Invalid_operation
    288 nextt558 nexttoward  -NaN77   -Infinity -> -NaN77
    289 nextt559 nexttoward -sNaN88   -Infinity -> -NaN88 Invalid_operation
    290 
    291 -- Nmax, Nmin, Ntiny, subnormals
    292 maxExponent: 999
    293 minexponent: -999
    294 nextt570 nexttoward  9.99999999E+999    -Infinity -> 9.99999998E+999
    295 nextt571 nexttoward  9.99999998E+999    -Infinity -> 9.99999997E+999
    296 nextt572 nexttoward  1E-999             -Infinity -> 9.9999999E-1000 Underflow Subnormal Inexact Rounded
    297 nextt573 nexttoward  1.00000000E-999    -Infinity -> 9.9999999E-1000 Underflow Subnormal Inexact Rounded
    298 nextt574 nexttoward  9E-1007            -Infinity -> 8E-1007         Underflow Subnormal Inexact Rounded
    299 nextt575 nexttoward  9.9E-1006          -Infinity -> 9.8E-1006       Underflow Subnormal Inexact Rounded
    300 nextt576 nexttoward  9.9999E-1003       -Infinity -> 9.9998E-1003    Underflow Subnormal Inexact Rounded
    301 nextt577 nexttoward  9.9999999E-1000    -Infinity -> 9.9999998E-1000 Underflow Subnormal Inexact Rounded
    302 nextt578 nexttoward  9.9999998E-1000    -Infinity -> 9.9999997E-1000 Underflow Subnormal Inexact Rounded
    303 nextt579 nexttoward  9.9999997E-1000    -Infinity -> 9.9999996E-1000 Underflow Subnormal Inexact Rounded
    304 nextt580 nexttoward  0E-1007            -Infinity -> -1E-1007        Underflow Subnormal Inexact Rounded
    305 nextt581 nexttoward  1E-1007            -Infinity -> 0E-1007         Underflow Subnormal Inexact Rounded Clamped
    306 nextt582 nexttoward  2E-1007            -Infinity -> 1E-1007         Underflow Subnormal Inexact Rounded
    307 
    308 nextt583 nexttoward  -0E-1007           -Infinity -> -1E-1007        Underflow Subnormal Inexact Rounded
    309 nextt584 nexttoward  -1E-1007           -Infinity -> -2E-1007        Underflow Subnormal Inexact Rounded
    310 nextt585 nexttoward  -2E-1007           -Infinity -> -3E-1007        Underflow Subnormal Inexact Rounded
    311 nextt586 nexttoward  -10E-1007          -Infinity -> -1.1E-1006      Underflow Subnormal Inexact Rounded
    312 nextt587 nexttoward  -100E-1007         -Infinity -> -1.01E-1005     Underflow Subnormal Inexact Rounded
    313 nextt588 nexttoward  -100000E-1007      -Infinity -> -1.00001E-1002  Underflow Subnormal Inexact Rounded
    314 nextt589 nexttoward  -1.0000E-999       -Infinity -> -1.00000001E-999
    315 nextt590 nexttoward  -1.00000000E-999   -Infinity -> -1.00000001E-999
    316 nextt591 nexttoward  -1E-999            -Infinity -> -1.00000001E-999
    317 nextt592 nexttoward  -9.99999998E+999   -Infinity -> -9.99999999E+999
    318 nextt593 nexttoward  -9.99999999E+999   -Infinity -> -Infinity Overflow Inexact Rounded
    319 
    320 
    321 
    322 
    323 ------- Specials
    324 maxExponent: 384
    325 minexponent: -383
    326 nextt780 nexttoward -Inf  -Inf   -> -Infinity
    327 nextt781 nexttoward -Inf  -1000  -> -9.99999999E+384
    328 nextt782 nexttoward -Inf  -1     -> -9.99999999E+384
    329 nextt783 nexttoward -Inf  -0     -> -9.99999999E+384
    330 nextt784 nexttoward -Inf   0     -> -9.99999999E+384
    331 nextt785 nexttoward -Inf   1     -> -9.99999999E+384
    332 nextt786 nexttoward -Inf   1000  -> -9.99999999E+384
    333 nextt787 nexttoward -1000 -Inf   -> -1000.00001
    334 nextt788 nexttoward -Inf  -Inf   -> -Infinity
    335 nextt789 nexttoward -1    -Inf   -> -1.00000001
    336 nextt790 nexttoward -0    -Inf   -> -1E-391           Underflow Subnormal Inexact Rounded
    337 nextt791 nexttoward  0    -Inf   -> -1E-391           Underflow Subnormal Inexact Rounded
    338 nextt792 nexttoward  1    -Inf   ->  0.999999999
    339 nextt793 nexttoward  1000 -Inf   ->  999.999999
    340 nextt794 nexttoward  Inf  -Inf   ->  9.99999999E+384
    341 
    342 nextt800 nexttoward  Inf  -Inf   ->  9.99999999E+384
    343 nextt801 nexttoward  Inf  -1000  ->  9.99999999E+384
    344 nextt802 nexttoward  Inf  -1     ->  9.99999999E+384
    345 nextt803 nexttoward  Inf  -0     ->  9.99999999E+384
    346 nextt804 nexttoward  Inf   0     ->  9.99999999E+384
    347 nextt805 nexttoward  Inf   1     ->  9.99999999E+384
    348 nextt806 nexttoward  Inf   1000  ->  9.99999999E+384
    349 nextt807 nexttoward  Inf   Inf   ->  Infinity
    350 nextt808 nexttoward -1000  Inf   -> -999.999999
    351 nextt809 nexttoward -Inf   Inf   -> -9.99999999E+384
    352 nextt810 nexttoward -1     Inf   -> -0.999999999
    353 nextt811 nexttoward -0     Inf   ->  1E-391           Underflow Subnormal Inexact Rounded
    354 nextt812 nexttoward  0     Inf   ->  1E-391           Underflow Subnormal Inexact Rounded
    355 nextt813 nexttoward  1     Inf   ->  1.00000001
    356 nextt814 nexttoward  1000  Inf   ->  1000.00001
    357 nextt815 nexttoward  Inf   Inf   ->  Infinity
    358 
    359 nextt821 nexttoward  NaN -Inf    ->  NaN
    360 nextt822 nexttoward  NaN -1000   ->  NaN
    361 nextt823 nexttoward  NaN -1      ->  NaN
    362 nextt824 nexttoward  NaN -0      ->  NaN
    363 nextt825 nexttoward  NaN  0      ->  NaN
    364 nextt826 nexttoward  NaN  1      ->  NaN
    365 nextt827 nexttoward  NaN  1000   ->  NaN
    366 nextt828 nexttoward  NaN  Inf    ->  NaN
    367 nextt829 nexttoward  NaN  NaN    ->  NaN
    368 nextt830 nexttoward -Inf  NaN    ->  NaN
    369 nextt831 nexttoward -1000 NaN    ->  NaN
    370 nextt832 nexttoward -1    NaN    ->  NaN
    371 nextt833 nexttoward -0    NaN    ->  NaN
    372 nextt834 nexttoward  0    NaN    ->  NaN
    373 nextt835 nexttoward  1    NaN    ->  NaN
    374 nextt836 nexttoward  1000 NaN    ->  NaN
    375 nextt837 nexttoward  Inf  NaN    ->  NaN
    376 
    377 nextt841 nexttoward  sNaN -Inf   ->  NaN  Invalid_operation
    378 nextt842 nexttoward  sNaN -1000  ->  NaN  Invalid_operation
    379 nextt843 nexttoward  sNaN -1     ->  NaN  Invalid_operation
    380 nextt844 nexttoward  sNaN -0     ->  NaN  Invalid_operation
    381 nextt845 nexttoward  sNaN  0     ->  NaN  Invalid_operation
    382 nextt846 nexttoward  sNaN  1     ->  NaN  Invalid_operation
    383 nextt847 nexttoward  sNaN  1000  ->  NaN  Invalid_operation
    384 nextt848 nexttoward  sNaN  NaN   ->  NaN  Invalid_operation
    385 nextt849 nexttoward  sNaN sNaN   ->  NaN  Invalid_operation
    386 nextt850 nexttoward  NaN  sNaN   ->  NaN  Invalid_operation
    387 nextt851 nexttoward -Inf  sNaN   ->  NaN  Invalid_operation
    388 nextt852 nexttoward -1000 sNaN   ->  NaN  Invalid_operation
    389 nextt853 nexttoward -1    sNaN   ->  NaN  Invalid_operation
    390 nextt854 nexttoward -0    sNaN   ->  NaN  Invalid_operation
    391 nextt855 nexttoward  0    sNaN   ->  NaN  Invalid_operation
    392 nextt856 nexttoward  1    sNaN   ->  NaN  Invalid_operation
    393 nextt857 nexttoward  1000 sNaN   ->  NaN  Invalid_operation
    394 nextt858 nexttoward  Inf  sNaN   ->  NaN  Invalid_operation
    395 nextt859 nexttoward  NaN  sNaN   ->  NaN  Invalid_operation
    396 
    397 -- propagating NaNs
    398 nextt861 nexttoward  NaN1   -Inf    ->  NaN1
    399 nextt862 nexttoward +NaN2   -1000   ->  NaN2
    400 nextt863 nexttoward  NaN3    1000   ->  NaN3
    401 nextt864 nexttoward  NaN4    Inf    ->  NaN4
    402 nextt865 nexttoward  NaN5   +NaN6   ->  NaN5
    403 nextt866 nexttoward -Inf     NaN7   ->  NaN7
    404 nextt867 nexttoward -1000    NaN8   ->  NaN8
    405 nextt868 nexttoward  1000    NaN9   ->  NaN9
    406 nextt869 nexttoward  Inf    +NaN10  ->  NaN10
    407 nextt871 nexttoward  sNaN11  -Inf   ->  NaN11  Invalid_operation
    408 nextt872 nexttoward  sNaN12  -1000  ->  NaN12  Invalid_operation
    409 nextt873 nexttoward  sNaN13   1000  ->  NaN13  Invalid_operation
    410 nextt874 nexttoward  sNaN14   NaN17 ->  NaN14  Invalid_operation
    411 nextt875 nexttoward  sNaN15  sNaN18 ->  NaN15  Invalid_operation
    412 nextt876 nexttoward  NaN16   sNaN19 ->  NaN19  Invalid_operation
    413 nextt877 nexttoward -Inf    +sNaN20 ->  NaN20  Invalid_operation
    414 nextt878 nexttoward -1000    sNaN21 ->  NaN21  Invalid_operation
    415 nextt879 nexttoward  1000    sNaN22 ->  NaN22  Invalid_operation
    416 nextt880 nexttoward  Inf     sNaN23 ->  NaN23  Invalid_operation
    417 nextt881 nexttoward +NaN25  +sNaN24 ->  NaN24  Invalid_operation
    418 nextt882 nexttoward -NaN26    NaN28 -> -NaN26
    419 nextt883 nexttoward -sNaN27  sNaN29 -> -NaN27  Invalid_operation
    420 nextt884 nexttoward  1000    -NaN30 -> -NaN30
    421 nextt885 nexttoward  1000   -sNaN31 -> -NaN31  Invalid_operation
    422 
    423 -- Null tests
    424 nextt900 nexttoward 1  # -> NaN Invalid_operation
    425 nextt901 nexttoward #  1 -> NaN Invalid_operation
    426 
    427