AppPkg/Applications/Python/Python-2.7.2/Lib/test/decimaltestdata/logb.decTest

   1 ------------------------------------------------------------------------
   2 -- logb.decTest -- return integral adjusted exponent as per 754r      --
   3 -- Copyright (c) IBM Corporation, 2005, 2009.  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 ------------------------------------------------------------------------
  20 version: 2.59
  21
  22 -- This emphasises the testing of notable cases, as they will often
  23 -- have unusual paths (especially the 10**n results).
  24
  25 extended:    1
  26 rounding:    half_even
  27 maxExponent: 999
  28 minexponent: -999
  29
  30 -- basics & examples
  31 precision:   9
  32 logbx001 logb  0                 -> -Infinity  Division_by_zero
  33 logbx002 logb  1E-999            -> -999
  34 logbx003 logb  9E-999            -> -999
  35 logbx004 logb  0.001             -> -3
  36 logbx005 logb  0.03              -> -2
  37 logbx006 logb  1                 ->  0
  38 logbx007 logb  2                 ->  0
  39 logbx008 logb  2.5               ->  0
  40 logbx009 logb  2.50              ->  0
  41 logbx010 logb  10                ->  1
  42 logbx011 logb  70                ->  1
  43 logbx012 logb  100               ->  2
  44 logbx013 logb  250               ->  2
  45 logbx014 logb +Infinity          ->  Infinity
  46
  47 -- negatives are treated as positives
  48 logbx021 logb -0                 -> -Infinity  Division_by_zero
  49 logbx022 logb -1E-999            -> -999
  50 logbx023 logb -9E-999            -> -999
  51 logbx024 logb -0.001             -> -3
  52 logbx025 logb -1                 ->  0
  53 logbx026 logb -2                 ->  0
  54 logbx027 logb -10                ->  1
  55 logbx028 logb -70                ->  1
  56 logbx029 logb -100               ->  2
  57 logbx030 logb -100000000         ->  8
  58 logbx031 logb -Infinity          ->  Infinity
  59
  60 -- zeros
  61 logbx111 logb          0   -> -Infinity  Division_by_zero
  62 logbx112 logb         -0   -> -Infinity  Division_by_zero
  63 logbx113 logb       0E+4   -> -Infinity  Division_by_zero
  64 logbx114 logb      -0E+4   -> -Infinity  Division_by_zero
  65 logbx115 logb     0.0000   -> -Infinity  Division_by_zero
  66 logbx116 logb    -0.0000   -> -Infinity  Division_by_zero
  67 logbx117 logb      0E-141  -> -Infinity  Division_by_zero
  68 logbx118 logb     -0E-141  -> -Infinity  Division_by_zero
  69
  70 -- full coefficients, alternating bits
  71 logbx121 logb   268268268        -> 8
  72 logbx122 logb  -268268268        -> 8
  73 logbx123 logb   134134134        -> 8
  74 logbx124 logb  -134134134        -> 8
  75
  76 -- Nmax, Nmin, Ntiny
  77 logbx131 logb  9.99999999E+999   -> 999
  78 logbx132 logb  1E-999            -> -999
  79 logbx133 logb  1.00000000E-999   -> -999
  80 logbx134 logb  1E-1007           -> -1007
  81
  82 logbx135 logb  -1E-1007          -> -1007
  83 logbx136 logb  -1.00000000E-999  -> -999
  84 logbx137 logb  -1E-999           -> -999
  85 logbx138 logb  -9.99999999E+999  ->  999
  86
  87 -- ones
  88 logbx0061 logb  1                 ->   0
  89 logbx0062 logb  1.0               ->   0
  90 logbx0063 logb  1.000000000000000 ->   0
  91 logbx0064 logb  1.000000000000000000 ->   0
  92
  93 -- notable cases -- exact powers of 10
  94 logbx1100 logb 1             -> 0
  95 logbx1101 logb 10            -> 1
  96 logbx1102 logb 100           -> 2
  97 logbx1103 logb 1000          -> 3
  98 logbx1104 logb 10000         -> 4
  99 logbx1105 logb 100000        -> 5
 100 logbx1106 logb 1000000       -> 6
 101 logbx1107 logb 10000000      -> 7
 102 logbx1108 logb 100000000     -> 8
 103 logbx1109 logb 1000000000    -> 9
 104 logbx1110 logb 10000000000   -> 10
 105 logbx1111 logb 100000000000  -> 11
 106 logbx1112 logb 1000000000000 -> 12
 107 logbx1113 logb 0.00000000001 -> -11
 108 logbx1114 logb 0.0000000001 -> -10
 109 logbx1115 logb 0.000000001 -> -9
 110 logbx1116 logb 0.00000001 -> -8
 111 logbx1117 logb 0.0000001 -> -7
 112 logbx1118 logb 0.000001 -> -6
 113 logbx1119 logb 0.00001 -> -5
 114 logbx1120 logb 0.0001 -> -4
 115 logbx1121 logb 0.001 -> -3
 116 logbx1122 logb 0.01 -> -2
 117 logbx1123 logb 0.1 -> -1
 118 logbx1124 logb 1E-99  -> -99
 119 logbx1125 logb 1E-100 -> -100
 120 logbx1126 logb 1E-383 -> -383
 121 logbx1127 logb 1E-999 -> -999
 122
 123 -- suggestions from Ilan Nehama
 124 logbx1400 logb 10E-3    -> -2
 125 logbx1401 logb 10E-2    -> -1
 126 logbx1402 logb 100E-2   ->  0
 127 logbx1403 logb 1000E-2  ->  1
 128 logbx1404 logb 10000E-2 ->  2
 129 logbx1405 logb 10E-1    ->  0
 130 logbx1406 logb 100E-1   ->  1
 131 logbx1407 logb 1000E-1  ->  2
 132 logbx1408 logb 10000E-1 ->  3
 133 logbx1409 logb 10E0     ->  1
 134 logbx1410 logb 100E0    ->  2
 135 logbx1411 logb 1000E0   ->  3
 136 logbx1412 logb 10000E0  ->  4
 137 logbx1413 logb 10E1     ->  2
 138 logbx1414 logb 100E1    ->  3
 139 logbx1415 logb 1000E1   ->  4
 140 logbx1416 logb 10000E1  ->  5
 141 logbx1417 logb 10E2     ->  3
 142 logbx1418 logb 100E2    ->  4
 143 logbx1419 logb 1000E2   ->  5
 144 logbx1420 logb 10000E2  ->  6
 145
 146 -- inexacts
 147 precision: 2
 148 logbx1500 logb 10000E2       ->  6
 149 logbx1501 logb 1E+99         ->  99
 150 logbx1502 logb 1E-99         -> -99
 151 logbx1503 logb 1E+100        ->  1.0E+2  Rounded
 152 logbx1504 logb 1E+999        ->  1.0E+3  Inexact Rounded
 153 logbx1505 logb 1E-100        -> -1.0E+2  Rounded
 154 logbx1506 logb 1E-999        -> -1.0E+3  Inexact Rounded
 155 logbx1507 logb 1E-1111       -> -1.1E+3  Inexact Rounded
 156 logbx1508 logb 1E-3333       -> -3.3E+3  Inexact Rounded
 157 logbx1509 logb 1E-6666       -> -6.7E+3  Inexact Rounded
 158 logbx1510 logb 1E+999999999  ->  1.0E+9  Inexact Rounded
 159 logbx1511 logb 1E-999999999  -> -1.0E+9  Inexact Rounded
 160 precision: 1
 161 logbx1517 logb 1E-1111       -> -1E+3    Inexact Rounded
 162 logbx1518 logb 1E-3333       -> -3E+3    Inexact Rounded
 163 logbx1519 logb 1E-6666       -> -7E+3    Inexact Rounded
 164 precision: 8
 165 logbx1520 logb 1E+999999999  ->  1.0000000E+9 Inexact Rounded
 166 logbx1521 logb 1E-999999999  -> -1.0000000E+9 Inexact Rounded
 167 precision: 9
 168 logbx1523 logb 1E+999999999  ->  999999999
 169 logbx1524 logb 1E-999999999  -> -999999999
 170
 171 -- special values
 172 precision: 9
 173 logbx820  logb   Infinity ->   Infinity
 174 logbx821  logb  -Infinity ->   Infinity
 175 logbx822  logb   0        ->  -Infinity Division_by_zero
 176 logbx823  logb   NaN      ->   NaN
 177 logbx824  logb   sNaN     ->   NaN     Invalid_operation
 178 -- propagating NaNs
 179 logbx825  logb   sNaN123  ->   NaN123  Invalid_operation
 180 logbx826  logb   -sNaN321 ->  -NaN321  Invalid_operation
 181 logbx827  logb   NaN456   ->   NaN456
 182 logbx828  logb   -NaN654  ->  -NaN654
 183 logbx829  logb   NaN1     ->   NaN1
 184
 185 -- Null test
 186 logbx900  logb #   -> NaN Invalid_operation
 187
 188