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353750c405
fully updated to the latests Decimal Specification (v1.66) and the latests test cases (v2.56). Thanks to Mark Dickinson for all his help during this process.
159 lines
6.1 KiB
Text
159 lines
6.1 KiB
Text
------------------------------------------------------------------------
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-- ddLogB.decTest -- integral 754r adjusted exponent, for decDoubles --
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-- Copyright (c) IBM Corporation, 2005, 2007. All rights reserved. --
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------------------------------------------------------------------------
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-- Please see the document "General Decimal Arithmetic Testcases" --
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-- at http://www2.hursley.ibm.com/decimal for the description of --
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-- these testcases. --
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-- --
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-- These testcases are experimental ('beta' versions), and they --
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-- may contain errors. They are offered on an as-is basis. In --
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-- particular, achieving the same results as the tests here is not --
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-- a guarantee that an implementation complies with any Standard --
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-- or specification. The tests are not exhaustive. --
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-- --
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-- Please send comments, suggestions, and corrections to the author: --
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-- Mike Cowlishaw, IBM Fellow --
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-- IBM UK, PO Box 31, Birmingham Road, Warwick CV34 5JL, UK --
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-- mfc@uk.ibm.com --
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------------------------------------------------------------------------
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version: 2.56
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precision: 16
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maxExponent: 384
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minExponent: -383
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extended: 1
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clamp: 1
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rounding: half_even
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-- basics
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ddlogb000 logb 0 -> -Infinity Division_by_zero
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ddlogb001 logb 1E-398 -> -398
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ddlogb002 logb 1E-383 -> -383
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ddlogb003 logb 0.001 -> -3
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ddlogb004 logb 0.03 -> -2
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ddlogb005 logb 1 -> 0
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ddlogb006 logb 2 -> 0
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ddlogb007 logb 2.5 -> 0
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ddlogb008 logb 2.500 -> 0
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ddlogb009 logb 10 -> 1
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ddlogb010 logb 70 -> 1
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ddlogb011 logb 100 -> 2
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ddlogb012 logb 333 -> 2
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ddlogb013 logb 9E+384 -> 384
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ddlogb014 logb +Infinity -> Infinity
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-- negatives appear to be treated as positives
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ddlogb021 logb -0 -> -Infinity Division_by_zero
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ddlogb022 logb -1E-398 -> -398
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ddlogb023 logb -9E-383 -> -383
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ddlogb024 logb -0.001 -> -3
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ddlogb025 logb -1 -> 0
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ddlogb026 logb -2 -> 0
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ddlogb027 logb -10 -> 1
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ddlogb028 logb -70 -> 1
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ddlogb029 logb -100 -> 2
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ddlogb030 logb -9E+384 -> 384
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ddlogb031 logb -Infinity -> Infinity
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-- zeros
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ddlogb111 logb 0 -> -Infinity Division_by_zero
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ddlogb112 logb -0 -> -Infinity Division_by_zero
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ddlogb113 logb 0E+4 -> -Infinity Division_by_zero
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ddlogb114 logb -0E+4 -> -Infinity Division_by_zero
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ddlogb115 logb 0.0000 -> -Infinity Division_by_zero
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ddlogb116 logb -0.0000 -> -Infinity Division_by_zero
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ddlogb117 logb 0E-141 -> -Infinity Division_by_zero
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ddlogb118 logb -0E-141 -> -Infinity Division_by_zero
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-- full coefficients, alternating bits
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ddlogb121 logb 268268268 -> 8
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ddlogb122 logb -268268268 -> 8
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ddlogb123 logb 134134134 -> 8
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ddlogb124 logb -134134134 -> 8
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-- Nmax, Nmin, Ntiny
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ddlogb131 logb 9.999999999999999E+384 -> 384
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ddlogb132 logb 1E-383 -> -383
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ddlogb133 logb 1.000000000000000E-383 -> -383
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ddlogb134 logb 1E-398 -> -398
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ddlogb135 logb -1E-398 -> -398
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ddlogb136 logb -1.000000000000000E-383 -> -383
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ddlogb137 logb -1E-383 -> -383
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ddlogb138 logb -9.999999999999999E+384 -> 384
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-- ones
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ddlogb0061 logb 1 -> 0
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ddlogb0062 logb 1.0 -> 0
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ddlogb0063 logb 1.000000000000000 -> 0
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-- notable cases -- exact powers of 10
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ddlogb1100 logb 1 -> 0
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ddlogb1101 logb 10 -> 1
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ddlogb1102 logb 100 -> 2
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ddlogb1103 logb 1000 -> 3
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ddlogb1104 logb 10000 -> 4
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ddlogb1105 logb 100000 -> 5
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ddlogb1106 logb 1000000 -> 6
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ddlogb1107 logb 10000000 -> 7
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ddlogb1108 logb 100000000 -> 8
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ddlogb1109 logb 1000000000 -> 9
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ddlogb1110 logb 10000000000 -> 10
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ddlogb1111 logb 100000000000 -> 11
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ddlogb1112 logb 1000000000000 -> 12
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ddlogb1113 logb 0.00000000001 -> -11
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ddlogb1114 logb 0.0000000001 -> -10
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ddlogb1115 logb 0.000000001 -> -9
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ddlogb1116 logb 0.00000001 -> -8
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ddlogb1117 logb 0.0000001 -> -7
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ddlogb1118 logb 0.000001 -> -6
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ddlogb1119 logb 0.00001 -> -5
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ddlogb1120 logb 0.0001 -> -4
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ddlogb1121 logb 0.001 -> -3
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ddlogb1122 logb 0.01 -> -2
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ddlogb1123 logb 0.1 -> -1
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ddlogb1124 logb 1E-99 -> -99
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ddlogb1125 logb 1E-100 -> -100
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ddlogb1127 logb 1E-299 -> -299
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ddlogb1126 logb 1E-383 -> -383
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-- suggestions from Ilan Nehama
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ddlogb1400 logb 10E-3 -> -2
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ddlogb1401 logb 10E-2 -> -1
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ddlogb1402 logb 100E-2 -> 0
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ddlogb1403 logb 1000E-2 -> 1
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ddlogb1404 logb 10000E-2 -> 2
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ddlogb1405 logb 10E-1 -> 0
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ddlogb1406 logb 100E-1 -> 1
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ddlogb1407 logb 1000E-1 -> 2
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ddlogb1408 logb 10000E-1 -> 3
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ddlogb1409 logb 10E0 -> 1
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ddlogb1410 logb 100E0 -> 2
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ddlogb1411 logb 1000E0 -> 3
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ddlogb1412 logb 10000E0 -> 4
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ddlogb1413 logb 10E1 -> 2
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ddlogb1414 logb 100E1 -> 3
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ddlogb1415 logb 1000E1 -> 4
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ddlogb1416 logb 10000E1 -> 5
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ddlogb1417 logb 10E2 -> 3
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ddlogb1418 logb 100E2 -> 4
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ddlogb1419 logb 1000E2 -> 5
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ddlogb1420 logb 10000E2 -> 6
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-- special values
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ddlogb820 logb Infinity -> Infinity
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ddlogb821 logb 0 -> -Infinity Division_by_zero
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ddlogb822 logb NaN -> NaN
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ddlogb823 logb sNaN -> NaN Invalid_operation
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-- propagating NaNs
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ddlogb824 logb sNaN123 -> NaN123 Invalid_operation
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ddlogb825 logb -sNaN321 -> -NaN321 Invalid_operation
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ddlogb826 logb NaN456 -> NaN456
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ddlogb827 logb -NaN654 -> -NaN654
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ddlogb828 logb NaN1 -> NaN1
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-- Null test
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ddlogb900 logb # -> NaN Invalid_operation
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