| Georg Brandl | 5537d29 | 2011-03-05 15:10:38 +0100 | [diff] [blame] | 1 | ------------------------------------------------------------------------ |
| 2 | -- ddLogB.decTest -- integral 754r adjusted exponent, for decDoubles -- |
| 3 | -- Copyright (c) IBM Corporation, 2005, 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@uk.ibm.com -- |
| 19 | ------------------------------------------------------------------------ |
| 20 | version: 2.59 |
| 21 | |
| 22 | precision: 16 |
| 23 | maxExponent: 384 |
| 24 | minExponent: -383 |
| 25 | extended: 1 |
| 26 | clamp: 1 |
| 27 | rounding: half_even |
| 28 | |
| 29 | -- basics |
| 30 | ddlogb000 logb 0 -> -Infinity Division_by_zero |
| 31 | ddlogb001 logb 1E-398 -> -398 |
| 32 | ddlogb002 logb 1E-383 -> -383 |
| 33 | ddlogb003 logb 0.001 -> -3 |
| 34 | ddlogb004 logb 0.03 -> -2 |
| 35 | ddlogb005 logb 1 -> 0 |
| 36 | ddlogb006 logb 2 -> 0 |
| 37 | ddlogb007 logb 2.5 -> 0 |
| 38 | ddlogb008 logb 2.500 -> 0 |
| 39 | ddlogb009 logb 10 -> 1 |
| 40 | ddlogb010 logb 70 -> 1 |
| 41 | ddlogb011 logb 100 -> 2 |
| 42 | ddlogb012 logb 333 -> 2 |
| 43 | ddlogb013 logb 9E+384 -> 384 |
| 44 | ddlogb014 logb +Infinity -> Infinity |
| 45 | |
| 46 | -- negatives appear to be treated as positives |
| 47 | ddlogb021 logb -0 -> -Infinity Division_by_zero |
| 48 | ddlogb022 logb -1E-398 -> -398 |
| 49 | ddlogb023 logb -9E-383 -> -383 |
| 50 | ddlogb024 logb -0.001 -> -3 |
| 51 | ddlogb025 logb -1 -> 0 |
| 52 | ddlogb026 logb -2 -> 0 |
| 53 | ddlogb027 logb -10 -> 1 |
| 54 | ddlogb028 logb -70 -> 1 |
| 55 | ddlogb029 logb -100 -> 2 |
| 56 | ddlogb030 logb -9E+384 -> 384 |
| 57 | ddlogb031 logb -Infinity -> Infinity |
| 58 | |
| 59 | -- zeros |
| 60 | ddlogb111 logb 0 -> -Infinity Division_by_zero |
| 61 | ddlogb112 logb -0 -> -Infinity Division_by_zero |
| 62 | ddlogb113 logb 0E+4 -> -Infinity Division_by_zero |
| 63 | ddlogb114 logb -0E+4 -> -Infinity Division_by_zero |
| 64 | ddlogb115 logb 0.0000 -> -Infinity Division_by_zero |
| 65 | ddlogb116 logb -0.0000 -> -Infinity Division_by_zero |
| 66 | ddlogb117 logb 0E-141 -> -Infinity Division_by_zero |
| 67 | ddlogb118 logb -0E-141 -> -Infinity Division_by_zero |
| 68 | |
| 69 | -- full coefficients, alternating bits |
| 70 | ddlogb121 logb 268268268 -> 8 |
| 71 | ddlogb122 logb -268268268 -> 8 |
| 72 | ddlogb123 logb 134134134 -> 8 |
| 73 | ddlogb124 logb -134134134 -> 8 |
| 74 | |
| 75 | -- Nmax, Nmin, Ntiny |
| 76 | ddlogb131 logb 9.999999999999999E+384 -> 384 |
| 77 | ddlogb132 logb 1E-383 -> -383 |
| 78 | ddlogb133 logb 1.000000000000000E-383 -> -383 |
| 79 | ddlogb134 logb 1E-398 -> -398 |
| 80 | |
| 81 | ddlogb135 logb -1E-398 -> -398 |
| 82 | ddlogb136 logb -1.000000000000000E-383 -> -383 |
| 83 | ddlogb137 logb -1E-383 -> -383 |
| 84 | ddlogb138 logb -9.999999999999999E+384 -> 384 |
| 85 | |
| 86 | -- ones |
| 87 | ddlogb0061 logb 1 -> 0 |
| 88 | ddlogb0062 logb 1.0 -> 0 |
| 89 | ddlogb0063 logb 1.000000000000000 -> 0 |
| 90 | |
| 91 | -- notable cases -- exact powers of 10 |
| 92 | ddlogb1100 logb 1 -> 0 |
| 93 | ddlogb1101 logb 10 -> 1 |
| 94 | ddlogb1102 logb 100 -> 2 |
| 95 | ddlogb1103 logb 1000 -> 3 |
| 96 | ddlogb1104 logb 10000 -> 4 |
| 97 | ddlogb1105 logb 100000 -> 5 |
| 98 | ddlogb1106 logb 1000000 -> 6 |
| 99 | ddlogb1107 logb 10000000 -> 7 |
| 100 | ddlogb1108 logb 100000000 -> 8 |
| 101 | ddlogb1109 logb 1000000000 -> 9 |
| 102 | ddlogb1110 logb 10000000000 -> 10 |
| 103 | ddlogb1111 logb 100000000000 -> 11 |
| 104 | ddlogb1112 logb 1000000000000 -> 12 |
| 105 | ddlogb1113 logb 0.00000000001 -> -11 |
| 106 | ddlogb1114 logb 0.0000000001 -> -10 |
| 107 | ddlogb1115 logb 0.000000001 -> -9 |
| 108 | ddlogb1116 logb 0.00000001 -> -8 |
| 109 | ddlogb1117 logb 0.0000001 -> -7 |
| 110 | ddlogb1118 logb 0.000001 -> -6 |
| 111 | ddlogb1119 logb 0.00001 -> -5 |
| 112 | ddlogb1120 logb 0.0001 -> -4 |
| 113 | ddlogb1121 logb 0.001 -> -3 |
| 114 | ddlogb1122 logb 0.01 -> -2 |
| 115 | ddlogb1123 logb 0.1 -> -1 |
| 116 | ddlogb1124 logb 1E-99 -> -99 |
| 117 | ddlogb1125 logb 1E-100 -> -100 |
| 118 | ddlogb1127 logb 1E-299 -> -299 |
| 119 | ddlogb1126 logb 1E-383 -> -383 |
| 120 | |
| 121 | -- suggestions from Ilan Nehama |
| 122 | ddlogb1400 logb 10E-3 -> -2 |
| 123 | ddlogb1401 logb 10E-2 -> -1 |
| 124 | ddlogb1402 logb 100E-2 -> 0 |
| 125 | ddlogb1403 logb 1000E-2 -> 1 |
| 126 | ddlogb1404 logb 10000E-2 -> 2 |
| 127 | ddlogb1405 logb 10E-1 -> 0 |
| 128 | ddlogb1406 logb 100E-1 -> 1 |
| 129 | ddlogb1407 logb 1000E-1 -> 2 |
| 130 | ddlogb1408 logb 10000E-1 -> 3 |
| 131 | ddlogb1409 logb 10E0 -> 1 |
| 132 | ddlogb1410 logb 100E0 -> 2 |
| 133 | ddlogb1411 logb 1000E0 -> 3 |
| 134 | ddlogb1412 logb 10000E0 -> 4 |
| 135 | ddlogb1413 logb 10E1 -> 2 |
| 136 | ddlogb1414 logb 100E1 -> 3 |
| 137 | ddlogb1415 logb 1000E1 -> 4 |
| 138 | ddlogb1416 logb 10000E1 -> 5 |
| 139 | ddlogb1417 logb 10E2 -> 3 |
| 140 | ddlogb1418 logb 100E2 -> 4 |
| 141 | ddlogb1419 logb 1000E2 -> 5 |
| 142 | ddlogb1420 logb 10000E2 -> 6 |
| 143 | |
| 144 | -- special values |
| 145 | ddlogb820 logb Infinity -> Infinity |
| 146 | ddlogb821 logb 0 -> -Infinity Division_by_zero |
| 147 | ddlogb822 logb NaN -> NaN |
| 148 | ddlogb823 logb sNaN -> NaN Invalid_operation |
| 149 | -- propagating NaNs |
| 150 | ddlogb824 logb sNaN123 -> NaN123 Invalid_operation |
| 151 | ddlogb825 logb -sNaN321 -> -NaN321 Invalid_operation |
| 152 | ddlogb826 logb NaN456 -> NaN456 |
| 153 | ddlogb827 logb -NaN654 -> -NaN654 |
| 154 | ddlogb828 logb NaN1 -> NaN1 |
| 155 | |
| 156 | -- Null test |
| 157 | ddlogb900 logb # -> NaN Invalid_operation |
| 158 | |
| 159 | |