| 1 | ------------------------------------------------------------------------
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| 2 | -- ddLogB.decTest -- integral 754r adjusted exponent, for decDoubles --
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| 3 | -- Copyright (c) IBM Corporation, 2005, 2008. All rights reserved. --
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| 4 | ------------------------------------------------------------------------
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| 5 | -- Please see the document "General Decimal Arithmetic Testcases" --
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| 6 | -- at http://www2.hursley.ibm.com/decimal for the description of --
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| 7 | -- these testcases. --
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| 8 | -- --
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| 9 | -- These testcases are experimental ('beta' versions), and they --
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| 10 | -- may contain errors. They are offered on an as-is basis. In --
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| 11 | -- particular, achieving the same results as the tests here is not --
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| 12 | -- a guarantee that an implementation complies with any Standard --
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| 13 | -- or specification. The tests are not exhaustive. --
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| 14 | -- --
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| 15 | -- Please send comments, suggestions, and corrections to the author: --
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| 16 | -- Mike Cowlishaw, IBM Fellow --
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| 17 | -- IBM UK, PO Box 31, Birmingham Road, Warwick CV34 5JL, UK --
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| 18 | -- mfc@uk.ibm.com --
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| 19 | ------------------------------------------------------------------------
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| 20 | version: 2.59
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| 21 |
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| 22 | precision: 16
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| 23 | maxExponent: 384
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| 24 | minExponent: -383
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| 25 | extended: 1
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| 26 | clamp: 1
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| 27 | rounding: half_even
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| 28 |
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| 29 | -- basics
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| 30 | ddlogb000 logb 0 -> -Infinity Division_by_zero
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| 31 | ddlogb001 logb 1E-398 -> -398
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| 32 | ddlogb002 logb 1E-383 -> -383
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| 33 | ddlogb003 logb 0.001 -> -3
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| 34 | ddlogb004 logb 0.03 -> -2
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| 35 | ddlogb005 logb 1 -> 0
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| 36 | ddlogb006 logb 2 -> 0
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| 37 | ddlogb007 logb 2.5 -> 0
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| 38 | ddlogb008 logb 2.500 -> 0
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| 39 | ddlogb009 logb 10 -> 1
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| 40 | ddlogb010 logb 70 -> 1
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| 41 | ddlogb011 logb 100 -> 2
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| 42 | ddlogb012 logb 333 -> 2
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| 43 | ddlogb013 logb 9E+384 -> 384
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| 44 | ddlogb014 logb +Infinity -> Infinity
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| 45 |
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| 46 | -- negatives appear to be treated as positives
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| 47 | ddlogb021 logb -0 -> -Infinity Division_by_zero
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| 48 | ddlogb022 logb -1E-398 -> -398
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| 49 | ddlogb023 logb -9E-383 -> -383
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| 50 | ddlogb024 logb -0.001 -> -3
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| 51 | ddlogb025 logb -1 -> 0
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| 52 | ddlogb026 logb -2 -> 0
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| 53 | ddlogb027 logb -10 -> 1
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| 54 | ddlogb028 logb -70 -> 1
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| 55 | ddlogb029 logb -100 -> 2
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| 56 | ddlogb030 logb -9E+384 -> 384
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| 57 | ddlogb031 logb -Infinity -> Infinity
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| 58 |
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| 59 | -- zeros
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| 60 | ddlogb111 logb 0 -> -Infinity Division_by_zero
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| 61 | ddlogb112 logb -0 -> -Infinity Division_by_zero
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| 62 | ddlogb113 logb 0E+4 -> -Infinity Division_by_zero
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| 63 | ddlogb114 logb -0E+4 -> -Infinity Division_by_zero
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| 64 | ddlogb115 logb 0.0000 -> -Infinity Division_by_zero
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| 65 | ddlogb116 logb -0.0000 -> -Infinity Division_by_zero
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| 66 | ddlogb117 logb 0E-141 -> -Infinity Division_by_zero
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| 67 | ddlogb118 logb -0E-141 -> -Infinity Division_by_zero
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| 68 |
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| 69 | -- full coefficients, alternating bits
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| 70 | ddlogb121 logb 268268268 -> 8
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| 71 | ddlogb122 logb -268268268 -> 8
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| 72 | ddlogb123 logb 134134134 -> 8
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| 73 | ddlogb124 logb -134134134 -> 8
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| 74 |
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| 75 | -- Nmax, Nmin, Ntiny
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| 76 | ddlogb131 logb 9.999999999999999E+384 -> 384
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| 77 | ddlogb132 logb 1E-383 -> -383
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| 78 | ddlogb133 logb 1.000000000000000E-383 -> -383
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| 79 | ddlogb134 logb 1E-398 -> -398
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| 80 |
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| 81 | ddlogb135 logb -1E-398 -> -398
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| 82 | ddlogb136 logb -1.000000000000000E-383 -> -383
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| 83 | ddlogb137 logb -1E-383 -> -383
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| 84 | ddlogb138 logb -9.999999999999999E+384 -> 384
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| 85 |
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| 86 | -- ones
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| 87 | ddlogb0061 logb 1 -> 0
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| 88 | ddlogb0062 logb 1.0 -> 0
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| 89 | ddlogb0063 logb 1.000000000000000 -> 0
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| 90 |
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| 91 | -- notable cases -- exact powers of 10
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| 92 | ddlogb1100 logb 1 -> 0
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| 93 | ddlogb1101 logb 10 -> 1
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| 94 | ddlogb1102 logb 100 -> 2
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| 95 | ddlogb1103 logb 1000 -> 3
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| 96 | ddlogb1104 logb 10000 -> 4
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| 97 | ddlogb1105 logb 100000 -> 5
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| 98 | ddlogb1106 logb 1000000 -> 6
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| 99 | ddlogb1107 logb 10000000 -> 7
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| 100 | ddlogb1108 logb 100000000 -> 8
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| 101 | ddlogb1109 logb 1000000000 -> 9
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| 102 | ddlogb1110 logb 10000000000 -> 10
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| 103 | ddlogb1111 logb 100000000000 -> 11
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| 104 | ddlogb1112 logb 1000000000000 -> 12
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| 105 | ddlogb1113 logb 0.00000000001 -> -11
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| 106 | ddlogb1114 logb 0.0000000001 -> -10
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| 107 | ddlogb1115 logb 0.000000001 -> -9
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| 108 | ddlogb1116 logb 0.00000001 -> -8
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| 109 | ddlogb1117 logb 0.0000001 -> -7
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| 110 | ddlogb1118 logb 0.000001 -> -6
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| 111 | ddlogb1119 logb 0.00001 -> -5
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| 112 | ddlogb1120 logb 0.0001 -> -4
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| 113 | ddlogb1121 logb 0.001 -> -3
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| 114 | ddlogb1122 logb 0.01 -> -2
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| 115 | ddlogb1123 logb 0.1 -> -1
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| 116 | ddlogb1124 logb 1E-99 -> -99
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| 117 | ddlogb1125 logb 1E-100 -> -100
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| 118 | ddlogb1127 logb 1E-299 -> -299
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| 119 | ddlogb1126 logb 1E-383 -> -383
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| 120 |
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| 121 | -- suggestions from Ilan Nehama
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| 122 | ddlogb1400 logb 10E-3 -> -2
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| 123 | ddlogb1401 logb 10E-2 -> -1
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| 124 | ddlogb1402 logb 100E-2 -> 0
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| 125 | ddlogb1403 logb 1000E-2 -> 1
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| 126 | ddlogb1404 logb 10000E-2 -> 2
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| 127 | ddlogb1405 logb 10E-1 -> 0
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| 128 | ddlogb1406 logb 100E-1 -> 1
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| 129 | ddlogb1407 logb 1000E-1 -> 2
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| 130 | ddlogb1408 logb 10000E-1 -> 3
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| 131 | ddlogb1409 logb 10E0 -> 1
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| 132 | ddlogb1410 logb 100E0 -> 2
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| 133 | ddlogb1411 logb 1000E0 -> 3
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| 134 | ddlogb1412 logb 10000E0 -> 4
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| 135 | ddlogb1413 logb 10E1 -> 2
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| 136 | ddlogb1414 logb 100E1 -> 3
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| 137 | ddlogb1415 logb 1000E1 -> 4
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| 138 | ddlogb1416 logb 10000E1 -> 5
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| 139 | ddlogb1417 logb 10E2 -> 3
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| 140 | ddlogb1418 logb 100E2 -> 4
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| 141 | ddlogb1419 logb 1000E2 -> 5
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| 142 | ddlogb1420 logb 10000E2 -> 6
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| 143 |
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| 144 | -- special values
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| 145 | ddlogb820 logb Infinity -> Infinity
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| 146 | ddlogb821 logb 0 -> -Infinity Division_by_zero
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| 147 | ddlogb822 logb NaN -> NaN
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| 148 | ddlogb823 logb sNaN -> NaN Invalid_operation
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| 149 | -- propagating NaNs
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| 150 | ddlogb824 logb sNaN123 -> NaN123 Invalid_operation
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| 151 | ddlogb825 logb -sNaN321 -> -NaN321 Invalid_operation
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| 152 | ddlogb826 logb NaN456 -> NaN456
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| 153 | ddlogb827 logb -NaN654 -> -NaN654
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| 154 | ddlogb828 logb NaN1 -> NaN1
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| 155 |
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| 156 | -- Null test
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| 157 | ddlogb900 logb # -> NaN Invalid_operation
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| 158 |
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| 159 |
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