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- ------------------------------------------------------------------------
- -- ddLogB.decTest -- integral 754r adjusted exponent, for decDoubles --
- -- 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: 2.59
- precision: 16
- maxExponent: 384
- minExponent: -383
- extended: 1
- clamp: 1
- rounding: half_even
- -- basics
- ddlogb000 logb 0 -> -Infinity Division_by_zero
- ddlogb001 logb 1E-398 -> -398
- ddlogb002 logb 1E-383 -> -383
- ddlogb003 logb 0.001 -> -3
- ddlogb004 logb 0.03 -> -2
- ddlogb005 logb 1 -> 0
- ddlogb006 logb 2 -> 0
- ddlogb007 logb 2.5 -> 0
- ddlogb008 logb 2.500 -> 0
- ddlogb009 logb 10 -> 1
- ddlogb010 logb 70 -> 1
- ddlogb011 logb 100 -> 2
- ddlogb012 logb 333 -> 2
- ddlogb013 logb 9E+384 -> 384
- ddlogb014 logb +Infinity -> Infinity
- -- negatives appear to be treated as positives
- ddlogb021 logb -0 -> -Infinity Division_by_zero
- ddlogb022 logb -1E-398 -> -398
- ddlogb023 logb -9E-383 -> -383
- ddlogb024 logb -0.001 -> -3
- ddlogb025 logb -1 -> 0
- ddlogb026 logb -2 -> 0
- ddlogb027 logb -10 -> 1
- ddlogb028 logb -70 -> 1
- ddlogb029 logb -100 -> 2
- ddlogb030 logb -9E+384 -> 384
- ddlogb031 logb -Infinity -> Infinity
- -- zeros
- ddlogb111 logb 0 -> -Infinity Division_by_zero
- ddlogb112 logb -0 -> -Infinity Division_by_zero
- ddlogb113 logb 0E+4 -> -Infinity Division_by_zero
- ddlogb114 logb -0E+4 -> -Infinity Division_by_zero
- ddlogb115 logb 0.0000 -> -Infinity Division_by_zero
- ddlogb116 logb -0.0000 -> -Infinity Division_by_zero
- ddlogb117 logb 0E-141 -> -Infinity Division_by_zero
- ddlogb118 logb -0E-141 -> -Infinity Division_by_zero
- -- full coefficients, alternating bits
- ddlogb121 logb 268268268 -> 8
- ddlogb122 logb -268268268 -> 8
- ddlogb123 logb 134134134 -> 8
- ddlogb124 logb -134134134 -> 8
- -- Nmax, Nmin, Ntiny
- ddlogb131 logb 9.999999999999999E+384 -> 384
- ddlogb132 logb 1E-383 -> -383
- ddlogb133 logb 1.000000000000000E-383 -> -383
- ddlogb134 logb 1E-398 -> -398
- ddlogb135 logb -1E-398 -> -398
- ddlogb136 logb -1.000000000000000E-383 -> -383
- ddlogb137 logb -1E-383 -> -383
- ddlogb138 logb -9.999999999999999E+384 -> 384
- -- ones
- ddlogb0061 logb 1 -> 0
- ddlogb0062 logb 1.0 -> 0
- ddlogb0063 logb 1.000000000000000 -> 0
- -- notable cases -- exact powers of 10
- ddlogb1100 logb 1 -> 0
- ddlogb1101 logb 10 -> 1
- ddlogb1102 logb 100 -> 2
- ddlogb1103 logb 1000 -> 3
- ddlogb1104 logb 10000 -> 4
- ddlogb1105 logb 100000 -> 5
- ddlogb1106 logb 1000000 -> 6
- ddlogb1107 logb 10000000 -> 7
- ddlogb1108 logb 100000000 -> 8
- ddlogb1109 logb 1000000000 -> 9
- ddlogb1110 logb 10000000000 -> 10
- ddlogb1111 logb 100000000000 -> 11
- ddlogb1112 logb 1000000000000 -> 12
- ddlogb1113 logb 0.00000000001 -> -11
- ddlogb1114 logb 0.0000000001 -> -10
- ddlogb1115 logb 0.000000001 -> -9
- ddlogb1116 logb 0.00000001 -> -8
- ddlogb1117 logb 0.0000001 -> -7
- ddlogb1118 logb 0.000001 -> -6
- ddlogb1119 logb 0.00001 -> -5
- ddlogb1120 logb 0.0001 -> -4
- ddlogb1121 logb 0.001 -> -3
- ddlogb1122 logb 0.01 -> -2
- ddlogb1123 logb 0.1 -> -1
- ddlogb1124 logb 1E-99 -> -99
- ddlogb1125 logb 1E-100 -> -100
- ddlogb1127 logb 1E-299 -> -299
- ddlogb1126 logb 1E-383 -> -383
- -- suggestions from Ilan Nehama
- ddlogb1400 logb 10E-3 -> -2
- ddlogb1401 logb 10E-2 -> -1
- ddlogb1402 logb 100E-2 -> 0
- ddlogb1403 logb 1000E-2 -> 1
- ddlogb1404 logb 10000E-2 -> 2
- ddlogb1405 logb 10E-1 -> 0
- ddlogb1406 logb 100E-1 -> 1
- ddlogb1407 logb 1000E-1 -> 2
- ddlogb1408 logb 10000E-1 -> 3
- ddlogb1409 logb 10E0 -> 1
- ddlogb1410 logb 100E0 -> 2
- ddlogb1411 logb 1000E0 -> 3
- ddlogb1412 logb 10000E0 -> 4
- ddlogb1413 logb 10E1 -> 2
- ddlogb1414 logb 100E1 -> 3
- ddlogb1415 logb 1000E1 -> 4
- ddlogb1416 logb 10000E1 -> 5
- ddlogb1417 logb 10E2 -> 3
- ddlogb1418 logb 100E2 -> 4
- ddlogb1419 logb 1000E2 -> 5
- ddlogb1420 logb 10000E2 -> 6
- -- special values
- ddlogb820 logb Infinity -> Infinity
- ddlogb821 logb 0 -> -Infinity Division_by_zero
- ddlogb822 logb NaN -> NaN
- ddlogb823 logb sNaN -> NaN Invalid_operation
- -- propagating NaNs
- ddlogb824 logb sNaN123 -> NaN123 Invalid_operation
- ddlogb825 logb -sNaN321 -> -NaN321 Invalid_operation
- ddlogb826 logb NaN456 -> NaN456
- ddlogb827 logb -NaN654 -> -NaN654
- ddlogb828 logb NaN1 -> NaN1
- -- Null test
- ddlogb900 logb # -> NaN Invalid_operation
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