| 1 | ------------------------------------------------------------------------
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| 2 | -- ddNextMinus.decTest -- decDouble next that is less [754r nextdown] --
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| 3 | -- Copyright (c) IBM Corporation, 1981, 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 | -- All operands and results are decDoubles.
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| 23 | precision: 16
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| 24 | maxExponent: 384
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| 25 | minExponent: -383
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| 26 | extended: 1
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| 27 | clamp: 1
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| 28 | rounding: half_even
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| 29 |
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| 30 | ddnextm001 nextminus 0.9999999999999995 -> 0.9999999999999994
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| 31 | ddnextm002 nextminus 0.9999999999999996 -> 0.9999999999999995
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| 32 | ddnextm003 nextminus 0.9999999999999997 -> 0.9999999999999996
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| 33 | ddnextm004 nextminus 0.9999999999999998 -> 0.9999999999999997
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| 34 | ddnextm005 nextminus 0.9999999999999999 -> 0.9999999999999998
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| 35 | ddnextm006 nextminus 1.000000000000000 -> 0.9999999999999999
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| 36 | ddnextm007 nextminus 1.0 -> 0.9999999999999999
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| 37 | ddnextm008 nextminus 1 -> 0.9999999999999999
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| 38 | ddnextm009 nextminus 1.000000000000001 -> 1.000000000000000
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| 39 | ddnextm010 nextminus 1.000000000000002 -> 1.000000000000001
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| 40 | ddnextm011 nextminus 1.000000000000003 -> 1.000000000000002
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| 41 | ddnextm012 nextminus 1.000000000000004 -> 1.000000000000003
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| 42 | ddnextm013 nextminus 1.000000000000005 -> 1.000000000000004
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| 43 | ddnextm014 nextminus 1.000000000000006 -> 1.000000000000005
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| 44 | ddnextm015 nextminus 1.000000000000007 -> 1.000000000000006
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| 45 | ddnextm016 nextminus 1.000000000000008 -> 1.000000000000007
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| 46 | ddnextm017 nextminus 1.000000000000009 -> 1.000000000000008
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| 47 | ddnextm018 nextminus 1.000000000000010 -> 1.000000000000009
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| 48 | ddnextm019 nextminus 1.000000000000011 -> 1.000000000000010
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| 49 | ddnextm020 nextminus 1.000000000000012 -> 1.000000000000011
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| 50 |
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| 51 | ddnextm021 nextminus -0.9999999999999995 -> -0.9999999999999996
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| 52 | ddnextm022 nextminus -0.9999999999999996 -> -0.9999999999999997
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| 53 | ddnextm023 nextminus -0.9999999999999997 -> -0.9999999999999998
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| 54 | ddnextm024 nextminus -0.9999999999999998 -> -0.9999999999999999
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| 55 | ddnextm025 nextminus -0.9999999999999999 -> -1.000000000000000
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| 56 | ddnextm026 nextminus -1.000000000000000 -> -1.000000000000001
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| 57 | ddnextm027 nextminus -1.0 -> -1.000000000000001
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| 58 | ddnextm028 nextminus -1 -> -1.000000000000001
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| 59 | ddnextm029 nextminus -1.000000000000001 -> -1.000000000000002
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| 60 | ddnextm030 nextminus -1.000000000000002 -> -1.000000000000003
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| 61 | ddnextm031 nextminus -1.000000000000003 -> -1.000000000000004
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| 62 | ddnextm032 nextminus -1.000000000000004 -> -1.000000000000005
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| 63 | ddnextm033 nextminus -1.000000000000005 -> -1.000000000000006
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| 64 | ddnextm034 nextminus -1.000000000000006 -> -1.000000000000007
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| 65 | ddnextm035 nextminus -1.000000000000007 -> -1.000000000000008
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| 66 | ddnextm036 nextminus -1.000000000000008 -> -1.000000000000009
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| 67 | ddnextm037 nextminus -1.000000000000009 -> -1.000000000000010
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| 68 | ddnextm038 nextminus -1.000000000000010 -> -1.000000000000011
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| 69 | ddnextm039 nextminus -1.000000000000011 -> -1.000000000000012
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| 70 |
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| 71 | -- ultra-tiny inputs
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| 72 | ddnextm062 nextminus 1E-398 -> 0E-398
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| 73 | ddnextm065 nextminus -1E-398 -> -2E-398
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| 74 |
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| 75 | -- Zeros
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| 76 | ddnextm100 nextminus -0 -> -1E-398
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| 77 | ddnextm101 nextminus 0 -> -1E-398
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| 78 | ddnextm102 nextminus 0.00 -> -1E-398
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| 79 | ddnextm103 nextminus -0.00 -> -1E-398
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| 80 | ddnextm104 nextminus 0E-300 -> -1E-398
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| 81 | ddnextm105 nextminus 0E+300 -> -1E-398
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| 82 | ddnextm106 nextminus 0E+30000 -> -1E-398
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| 83 | ddnextm107 nextminus -0E+30000 -> -1E-398
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| 84 |
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| 85 | -- specials
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| 86 | ddnextm150 nextminus Inf -> 9.999999999999999E+384
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| 87 | ddnextm151 nextminus -Inf -> -Infinity
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| 88 | ddnextm152 nextminus NaN -> NaN
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| 89 | ddnextm153 nextminus sNaN -> NaN Invalid_operation
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| 90 | ddnextm154 nextminus NaN77 -> NaN77
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| 91 | ddnextm155 nextminus sNaN88 -> NaN88 Invalid_operation
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| 92 | ddnextm156 nextminus -NaN -> -NaN
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| 93 | ddnextm157 nextminus -sNaN -> -NaN Invalid_operation
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| 94 | ddnextm158 nextminus -NaN77 -> -NaN77
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| 95 | ddnextm159 nextminus -sNaN88 -> -NaN88 Invalid_operation
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| 96 |
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| 97 | -- Nmax, Nmin, Ntiny, subnormals
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| 98 | ddnextm170 nextminus 9.999999999999999E+384 -> 9.999999999999998E+384
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| 99 | ddnextm171 nextminus 9.999999999999998E+384 -> 9.999999999999997E+384
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| 100 | ddnextm172 nextminus 1E-383 -> 9.99999999999999E-384
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| 101 | ddnextm173 nextminus 1.000000000000000E-383 -> 9.99999999999999E-384
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| 102 | ddnextm174 nextminus 9E-398 -> 8E-398
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| 103 | ddnextm175 nextminus 9.9E-397 -> 9.8E-397
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| 104 | ddnextm176 nextminus 9.99999999999E-387 -> 9.99999999998E-387
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| 105 | ddnextm177 nextminus 9.99999999999999E-384 -> 9.99999999999998E-384
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| 106 | ddnextm178 nextminus 9.99999999999998E-384 -> 9.99999999999997E-384
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| 107 | ddnextm179 nextminus 9.99999999999997E-384 -> 9.99999999999996E-384
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| 108 | ddnextm180 nextminus 0E-398 -> -1E-398
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| 109 | ddnextm181 nextminus 1E-398 -> 0E-398
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| 110 | ddnextm182 nextminus 2E-398 -> 1E-398
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| 111 |
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| 112 | ddnextm183 nextminus -0E-398 -> -1E-398
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| 113 | ddnextm184 nextminus -1E-398 -> -2E-398
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| 114 | ddnextm185 nextminus -2E-398 -> -3E-398
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| 115 | ddnextm186 nextminus -10E-398 -> -1.1E-397
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| 116 | ddnextm187 nextminus -100E-398 -> -1.01E-396
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| 117 | ddnextm188 nextminus -100000E-398 -> -1.00001E-393
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| 118 | ddnextm189 nextminus -1.00000000000E-383 -> -1.000000000000001E-383
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| 119 | ddnextm190 nextminus -1.000000000000000E-383 -> -1.000000000000001E-383
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| 120 | ddnextm191 nextminus -1E-383 -> -1.000000000000001E-383
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| 121 | ddnextm192 nextminus -9.999999999999998E+384 -> -9.999999999999999E+384
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| 122 | ddnextm193 nextminus -9.999999999999999E+384 -> -Infinity
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| 123 |
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| 124 | -- Null tests
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| 125 | ddnextm900 nextminus # -> NaN Invalid_operation
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| 126 |
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