------------------------------------------------------------------------

-- dqLogB.decTest -- integral 754r adjusted exponent, for decQuads    --

-- Copyright (c) IBM Corporation, 2005, 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: 2.58

extended:    1

clamp:       1

precision:   34

maxExponent: 6144

minExponent: -6143

rounding:    half_even

-- basics

dqlogb000 logb  0                 -> -Infinity  Division_by_zero

dqlogb001 logb  1E-6176           -> -6176

dqlogb002 logb  1E-6143           -> -6143

dqlogb003 logb  0.001             -> -3

dqlogb004 logb  0.03              -> -2

dqlogb005 logb  1                 ->  0

dqlogb006 logb  2                 ->  0

dqlogb007 logb  2.5               ->  0

dqlogb008 logb  2.50              ->  0

dqlogb009 logb  2.500             ->  0

dqlogb010 logb  10                ->  1

dqlogb011 logb  70                ->  1

dqlogb012 logb  100               ->  2

dqlogb013 logb  250               ->  2

dqlogb014 logb  9E+6144           ->  6144

dqlogb015 logb +Infinity          ->  Infinity

-- negatives appear to be treated as positives

dqlogb021 logb -0                 -> -Infinity  Division_by_zero

dqlogb022 logb -1E-6176           -> -6176

dqlogb023 logb -9E-6143           -> -6143

dqlogb024 logb -0.001             -> -3

dqlogb025 logb -1                 ->  0

dqlogb026 logb -2                 ->  0

dqlogb027 logb -10                ->  1

dqlogb028 logb -70                ->  1

dqlogb029 logb -100               ->  2

dqlogb030 logb -9E+6144           ->  6144

dqlogb031 logb -Infinity          ->  Infinity

-- zeros

dqlogb111 logb          0   -> -Infinity  Division_by_zero

dqlogb112 logb         -0   -> -Infinity  Division_by_zero

dqlogb113 logb       0E+4   -> -Infinity  Division_by_zero

dqlogb114 logb      -0E+4   -> -Infinity  Division_by_zero

dqlogb115 logb     0.0000   -> -Infinity  Division_by_zero

dqlogb116 logb    -0.0000   -> -Infinity  Division_by_zero

dqlogb117 logb      0E-141  -> -Infinity  Division_by_zero

dqlogb118 logb     -0E-141  -> -Infinity  Division_by_zero

-- full coefficients, alternating bits

dqlogb121 logb   268268268        -> 8

dqlogb122 logb  -268268268        -> 8

dqlogb123 logb   134134134        -> 8

dqlogb124 logb  -134134134        -> 8

-- Nmax, Nmin, Ntiny

dqlogb131 logb  9.999999999999999999999999999999999E+6144   ->  6144

dqlogb132 logb  1E-6143                   -> -6143

dqlogb133 logb  1.000000000000000000000000000000000E-6143   -> -6143

dqlogb134 logb  1E-6176                   -> -6176

dqlogb135 logb  -1E-6176                  -> -6176

dqlogb136 logb  -1.000000000000000000000000000000000E-6143  -> -6143

dqlogb137 logb  -1E-6143                  -> -6143

dqlogb1614 logb  -9.999999999999999999999999999999999E+6144  ->  6144

-- ones

dqlogb0061 logb  1                 ->   0

dqlogb0062 logb  1.0               ->   0

dqlogb0063 logb  1.000000000000000 ->   0

-- notable cases -- exact powers of 10

dqlogb1100 logb 1             -> 0

dqlogb1101 logb 10            -> 1

dqlogb1102 logb 100           -> 2

dqlogb1103 logb 1000          -> 3

dqlogb1104 logb 10000         -> 4

dqlogb1105 logb 100000        -> 5

dqlogb1106 logb 1000000       -> 6

dqlogb1107 logb 10000000      -> 7

dqlogb1108 logb 100000000     -> 8

dqlogb1109 logb 1000000000    -> 9

dqlogb1110 logb 10000000000   -> 10

dqlogb1111 logb 100000000000  -> 11

dqlogb1112 logb 1000000000000 -> 12

dqlogb1113 logb 0.00000000001 -> -11

dqlogb1114 logb 0.0000000001 -> -10

dqlogb1115 logb 0.000000001 -> -9

dqlogb1116 logb 0.00000001 -> -8

dqlogb1117 logb 0.0000001 -> -7

dqlogb1118 logb 0.000001 -> -6

dqlogb1119 logb 0.00001 -> -5

dqlogb1120 logb 0.0001 -> -4

dqlogb1121 logb 0.001 -> -3

dqlogb1122 logb 0.01 -> -2

dqlogb1123 logb 0.1 -> -1

dqlogb1124 logb 1E-99  -> -99

dqlogb1125 logb 1E-100 -> -100

dqlogb1127 logb 1E-299 -> -299

dqlogb1126 logb 1E-6143 -> -6143

-- suggestions from Ilan Nehama

dqlogb1400 logb 10E-3    -> -2

dqlogb1401 logb 10E-2    -> -1

dqlogb1402 logb 100E-2   ->  0

dqlogb1403 logb 1000E-2  ->  1

dqlogb1404 logb 10000E-2 ->  2

dqlogb1405 logb 10E-1    ->  0

dqlogb1406 logb 100E-1   ->  1

dqlogb1407 logb 1000E-1  ->  2

dqlogb1408 logb 10000E-1 ->  3

dqlogb1409 logb 10E0     ->  1

dqlogb1410 logb 100E0    ->  2

dqlogb1411 logb 1000E0   ->  3

dqlogb1412 logb 10000E0  ->  4

dqlogb1413 logb 10E1     ->  2

dqlogb1414 logb 100E1    ->  3

dqlogb1415 logb 1000E1   ->  4

dqlogb1416 logb 10000E1  ->  5

dqlogb1417 logb 10E2     ->  3

dqlogb1418 logb 100E2    ->  4

dqlogb1419 logb 1000E2   ->  5

dqlogb1420 logb 10000E2  ->  6

-- special values

dqlogb820  logb   Infinity ->   Infinity

dqlogb821  logb   0        ->  -Infinity Division_by_zero

dqlogb822  logb   NaN      ->   NaN

dqlogb823  logb   sNaN     ->   NaN     Invalid_operation

-- propagating NaNs

dqlogb824  logb   sNaN123  ->   NaN123  Invalid_operation

dqlogb825  logb   -sNaN321 ->  -NaN321  Invalid_operation

dqlogb826  logb   NaN456   ->   NaN456

dqlogb827  logb   -NaN654  ->  -NaN654

dqlogb828  logb   NaN1     ->   NaN1

-- Null test

dqlogb900  logb #   -> NaN Invalid_operation