1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
------------------------------------------------------------------------
-- ddNextMinus.decTest -- decDouble next that is less [754r nextdown] --
-- Copyright (c) IBM Corporation, 1981, 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
-- All operands and results are decDoubles.
precision: 16
maxExponent: 384
minExponent: -383
extended: 1
clamp: 1
rounding: half_even
ddnextm001 nextminus 0.9999999999999995 -> 0.9999999999999994
ddnextm002 nextminus 0.9999999999999996 -> 0.9999999999999995
ddnextm003 nextminus 0.9999999999999997 -> 0.9999999999999996
ddnextm004 nextminus 0.9999999999999998 -> 0.9999999999999997
ddnextm005 nextminus 0.9999999999999999 -> 0.9999999999999998
ddnextm006 nextminus 1.000000000000000 -> 0.9999999999999999
ddnextm007 nextminus 1.0 -> 0.9999999999999999
ddnextm008 nextminus 1 -> 0.9999999999999999
ddnextm009 nextminus 1.000000000000001 -> 1.000000000000000
ddnextm010 nextminus 1.000000000000002 -> 1.000000000000001
ddnextm011 nextminus 1.000000000000003 -> 1.000000000000002
ddnextm012 nextminus 1.000000000000004 -> 1.000000000000003
ddnextm013 nextminus 1.000000000000005 -> 1.000000000000004
ddnextm014 nextminus 1.000000000000006 -> 1.000000000000005
ddnextm015 nextminus 1.000000000000007 -> 1.000000000000006
ddnextm016 nextminus 1.000000000000008 -> 1.000000000000007
ddnextm017 nextminus 1.000000000000009 -> 1.000000000000008
ddnextm018 nextminus 1.000000000000010 -> 1.000000000000009
ddnextm019 nextminus 1.000000000000011 -> 1.000000000000010
ddnextm020 nextminus 1.000000000000012 -> 1.000000000000011
ddnextm021 nextminus -0.9999999999999995 -> -0.9999999999999996
ddnextm022 nextminus -0.9999999999999996 -> -0.9999999999999997
ddnextm023 nextminus -0.9999999999999997 -> -0.9999999999999998
ddnextm024 nextminus -0.9999999999999998 -> -0.9999999999999999
ddnextm025 nextminus -0.9999999999999999 -> -1.000000000000000
ddnextm026 nextminus -1.000000000000000 -> -1.000000000000001
ddnextm027 nextminus -1.0 -> -1.000000000000001
ddnextm028 nextminus -1 -> -1.000000000000001
ddnextm029 nextminus -1.000000000000001 -> -1.000000000000002
ddnextm030 nextminus -1.000000000000002 -> -1.000000000000003
ddnextm031 nextminus -1.000000000000003 -> -1.000000000000004
ddnextm032 nextminus -1.000000000000004 -> -1.000000000000005
ddnextm033 nextminus -1.000000000000005 -> -1.000000000000006
ddnextm034 nextminus -1.000000000000006 -> -1.000000000000007
ddnextm035 nextminus -1.000000000000007 -> -1.000000000000008
ddnextm036 nextminus -1.000000000000008 -> -1.000000000000009
ddnextm037 nextminus -1.000000000000009 -> -1.000000000000010
ddnextm038 nextminus -1.000000000000010 -> -1.000000000000011
ddnextm039 nextminus -1.000000000000011 -> -1.000000000000012
-- ultra-tiny inputs
ddnextm062 nextminus 1E-398 -> 0E-398
ddnextm065 nextminus -1E-398 -> -2E-398
-- Zeros
ddnextm100 nextminus -0 -> -1E-398
ddnextm101 nextminus 0 -> -1E-398
ddnextm102 nextminus 0.00 -> -1E-398
ddnextm103 nextminus -0.00 -> -1E-398
ddnextm104 nextminus 0E-300 -> -1E-398
ddnextm105 nextminus 0E+300 -> -1E-398
ddnextm106 nextminus 0E+30000 -> -1E-398
ddnextm107 nextminus -0E+30000 -> -1E-398
-- specials
ddnextm150 nextminus Inf -> 9.999999999999999E+384
ddnextm151 nextminus -Inf -> -Infinity
ddnextm152 nextminus NaN -> NaN
ddnextm153 nextminus sNaN -> NaN Invalid_operation
ddnextm154 nextminus NaN77 -> NaN77
ddnextm155 nextminus sNaN88 -> NaN88 Invalid_operation
ddnextm156 nextminus -NaN -> -NaN
ddnextm157 nextminus -sNaN -> -NaN Invalid_operation
ddnextm158 nextminus -NaN77 -> -NaN77
ddnextm159 nextminus -sNaN88 -> -NaN88 Invalid_operation
-- Nmax, Nmin, Ntiny, subnormals
ddnextm170 nextminus 9.999999999999999E+384 -> 9.999999999999998E+384
ddnextm171 nextminus 9.999999999999998E+384 -> 9.999999999999997E+384
ddnextm172 nextminus 1E-383 -> 9.99999999999999E-384
ddnextm173 nextminus 1.000000000000000E-383 -> 9.99999999999999E-384
ddnextm174 nextminus 9E-398 -> 8E-398
ddnextm175 nextminus 9.9E-397 -> 9.8E-397
ddnextm176 nextminus 9.99999999999E-387 -> 9.99999999998E-387
ddnextm177 nextminus 9.99999999999999E-384 -> 9.99999999999998E-384
ddnextm178 nextminus 9.99999999999998E-384 -> 9.99999999999997E-384
ddnextm179 nextminus 9.99999999999997E-384 -> 9.99999999999996E-384
ddnextm180 nextminus 0E-398 -> -1E-398
ddnextm181 nextminus 1E-398 -> 0E-398
ddnextm182 nextminus 2E-398 -> 1E-398
ddnextm183 nextminus -0E-398 -> -1E-398
ddnextm184 nextminus -1E-398 -> -2E-398
ddnextm185 nextminus -2E-398 -> -3E-398
ddnextm186 nextminus -10E-398 -> -1.1E-397
ddnextm187 nextminus -100E-398 -> -1.01E-396
ddnextm188 nextminus -100000E-398 -> -1.00001E-393
ddnextm189 nextminus -1.00000000000E-383 -> -1.000000000000001E-383
ddnextm190 nextminus -1.000000000000000E-383 -> -1.000000000000001E-383
ddnextm191 nextminus -1E-383 -> -1.000000000000001E-383
ddnextm192 nextminus -9.999999999999998E+384 -> -9.999999999999999E+384
ddnextm193 nextminus -9.999999999999999E+384 -> -Infinity
-- Null tests
ddnextm900 nextminus # -> NaN Invalid_operation
|
