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gerrit-public.fairphone.software / platform / external / python / cpython3 / 80bc72d5a2f7550edbd63d577bb8fb1e3bbba69c / . / Lib / test / decimaltestdata / minus.decTest
blob: 17749c0ccf3d0b4bf60c0d6fba9ec8a501e9a707 [file] [log] [blame]
Raymond Hettinger7c85fa42004-07-01 11:01:35 +0000[diff] [blame]1------------------------------------------------------------------------
2-- minus.decTest -- decimal negation --
Benjamin Petersonf17ff4e2008-07-31 16:32:12 +0000[diff] [blame]3-- Copyright (c) IBM Corporation, 1981, 2008. All rights reserved. --
Raymond Hettinger7c85fa42004-07-01 11:01:35 +0000[diff] [blame]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------------------------------------------------------------------------
Mark Dickinson8a546532009-10-08 16:30:38 +0000[diff] [blame]20version: 2.59
Raymond Hettinger7c85fa42004-07-01 11:01:35 +0000[diff] [blame]21
22-- This set of tests primarily tests the existence of the operator.
23-- Subtraction, rounding, and more overflows are tested elsewhere.
24
25extended: 1
26precision: 9
27rounding: half_up
28maxExponent: 384
29minexponent: -383
30
31minx001 minus '1' -> '-1'
32minx002 minus '-1' -> '1'
33minx003 minus '1.00' -> '-1.00'
34minx004 minus '-1.00' -> '1.00'
35minx005 minus '0' -> '0'
36minx006 minus '0.00' -> '0.00'
37minx007 minus '00.0' -> '0.0'
38minx008 minus '00.00' -> '0.00'
39minx009 minus '00' -> '0'
40
41minx010 minus '-2' -> '2'
42minx011 minus '2' -> '-2'
43minx012 minus '-2.00' -> '2.00'
44minx013 minus '2.00' -> '-2.00'
45minx014 minus '-0' -> '0'
46minx015 minus '-0.00' -> '0.00'
47minx016 minus '-00.0' -> '0.0'
48minx017 minus '-00.00' -> '0.00'
49minx018 minus '-00' -> '0'
50
51-- "lhs" zeros in plus and minus have exponent = operand
52minx020 minus '-0E3' -> '0E+3'
53minx021 minus '-0E2' -> '0E+2'
54minx022 minus '-0E1' -> '0E+1'
55minx023 minus '-0E0' -> '0'
56minx024 minus '+0E0' -> '0'
57minx025 minus '+0E1' -> '0E+1'
58minx026 minus '+0E2' -> '0E+2'
59minx027 minus '+0E3' -> '0E+3'
60
61minx030 minus '-5E3' -> '5E+3'
62minx031 minus '-5E8' -> '5E+8'
63minx032 minus '-5E13' -> '5E+13'
64minx033 minus '-5E18' -> '5E+18'
65minx034 minus '+5E3' -> '-5E+3'
66minx035 minus '+5E8' -> '-5E+8'
67minx036 minus '+5E13' -> '-5E+13'
68minx037 minus '+5E18' -> '-5E+18'
69
70minx050 minus '-2000000' -> '2000000'
71minx051 minus '2000000' -> '-2000000'
72precision: 7
73minx052 minus '-2000000' -> '2000000'
74minx053 minus '2000000' -> '-2000000'
75precision: 6
76minx054 minus '-2000000' -> '2.00000E+6' Rounded
77minx055 minus '2000000' -> '-2.00000E+6' Rounded
78precision: 3
79minx056 minus '-2000000' -> '2.00E+6' Rounded
80minx057 minus '2000000' -> '-2.00E+6' Rounded
81
82-- more fixed, potential LHS swaps/overlays if done by 0 subtract x
83precision: 9
84minx060 minus '56267E-10' -> '-0.0000056267'
85minx061 minus '56267E-5' -> '-0.56267'
86minx062 minus '56267E-2' -> '-562.67'
87minx063 minus '56267E-1' -> '-5626.7'
88minx065 minus '56267E-0' -> '-56267'
89minx066 minus '56267E+0' -> '-56267'
90minx067 minus '56267E+1' -> '-5.6267E+5'
91minx068 minus '56267E+2' -> '-5.6267E+6'
92minx069 minus '56267E+3' -> '-5.6267E+7'
93minx070 minus '56267E+4' -> '-5.6267E+8'
94minx071 minus '56267E+5' -> '-5.6267E+9'
95minx072 minus '56267E+6' -> '-5.6267E+10'
96minx080 minus '-56267E-10' -> '0.0000056267'
97minx081 minus '-56267E-5' -> '0.56267'
98minx082 minus '-56267E-2' -> '562.67'
99minx083 minus '-56267E-1' -> '5626.7'
100minx085 minus '-56267E-0' -> '56267'
101minx086 minus '-56267E+0' -> '56267'
102minx087 minus '-56267E+1' -> '5.6267E+5'
103minx088 minus '-56267E+2' -> '5.6267E+6'
104minx089 minus '-56267E+3' -> '5.6267E+7'
105minx090 minus '-56267E+4' -> '5.6267E+8'
106minx091 minus '-56267E+5' -> '5.6267E+9'
107minx092 minus '-56267E+6' -> '5.6267E+10'
108
109
110-- overflow tests
111maxexponent: 999999999
112minexponent: -999999999
113precision: 3
114minx100 minus 9.999E+999999999 -> -Infinity Inexact Overflow Rounded
115minx101 minus -9.999E+999999999 -> Infinity Inexact Overflow Rounded
116
117-- subnormals and underflow
118precision: 3
119maxexponent: 999
120minexponent: -999
121minx110 minus 1.00E-999 -> -1.00E-999
122minx111 minus 0.1E-999 -> -1E-1000 Subnormal
123minx112 minus 0.10E-999 -> -1.0E-1000 Subnormal
124minx113 minus 0.100E-999 -> -1.0E-1000 Subnormal Rounded
125minx114 minus 0.01E-999 -> -1E-1001 Subnormal
126-- next is rounded to Emin
127minx115 minus 0.999E-999 -> -1.00E-999 Inexact Rounded Subnormal Underflow
128minx116 minus 0.099E-999 -> -1.0E-1000 Inexact Rounded Subnormal Underflow
129minx117 minus 0.009E-999 -> -1E-1001 Inexact Rounded Subnormal Underflow
Thomas Wouters1b7f8912007-09-19 03:06:30 +0000[diff] [blame]130minx118 minus 0.001E-999 -> -0E-1001 Inexact Rounded Subnormal Underflow Clamped
131minx119 minus 0.0009E-999 -> -0E-1001 Inexact Rounded Subnormal Underflow Clamped
132minx120 minus 0.0001E-999 -> -0E-1001 Inexact Rounded Subnormal Underflow Clamped
Raymond Hettinger7c85fa42004-07-01 11:01:35 +0000[diff] [blame]133
134minx130 minus -1.00E-999 -> 1.00E-999
135minx131 minus -0.1E-999 -> 1E-1000 Subnormal
136minx132 minus -0.10E-999 -> 1.0E-1000 Subnormal
137minx133 minus -0.100E-999 -> 1.0E-1000 Subnormal Rounded
138minx134 minus -0.01E-999 -> 1E-1001 Subnormal
139-- next is rounded to Emin
140minx135 minus -0.999E-999 -> 1.00E-999 Inexact Rounded Subnormal Underflow
141minx136 minus -0.099E-999 -> 1.0E-1000 Inexact Rounded Subnormal Underflow
142minx137 minus -0.009E-999 -> 1E-1001 Inexact Rounded Subnormal Underflow
Thomas Wouters1b7f8912007-09-19 03:06:30 +0000[diff] [blame]143minx138 minus -0.001E-999 -> 0E-1001 Inexact Rounded Subnormal Underflow Clamped
144minx139 minus -0.0009E-999 -> 0E-1001 Inexact Rounded Subnormal Underflow Clamped
145minx140 minus -0.0001E-999 -> 0E-1001 Inexact Rounded Subnormal Underflow Clamped
Raymond Hettinger7c85fa42004-07-01 11:01:35 +0000[diff] [blame]146
147
148-- long operand checks
149maxexponent: 999
150minexponent: -999
151precision: 9
152minx301 minus 12345678000 -> -1.23456780E+10 Rounded
153minx302 minus 1234567800 -> -1.23456780E+9 Rounded
154minx303 minus 1234567890 -> -1.23456789E+9 Rounded
155minx304 minus 1234567891 -> -1.23456789E+9 Inexact Rounded
156minx305 minus 12345678901 -> -1.23456789E+10 Inexact Rounded
157minx306 minus 1234567896 -> -1.23456790E+9 Inexact Rounded
158
159precision: 15
160-- still checking
161minx321 minus 12345678000 -> -12345678000
162minx322 minus 1234567800 -> -1234567800
163minx323 minus 1234567890 -> -1234567890
164minx324 minus 1234567891 -> -1234567891
165minx325 minus 12345678901 -> -12345678901
166minx326 minus 1234567896 -> -1234567896
167
168-- specials
169minx420 minus 'Inf' -> '-Infinity'
170minx421 minus '-Inf' -> 'Infinity'
171minx422 minus NaN -> NaN
172minx423 minus sNaN -> NaN Invalid_operation
173minx424 minus NaN255 -> NaN255
174minx425 minus sNaN256 -> NaN256 Invalid_operation
175minx426 minus -NaN -> -NaN
176minx427 minus -sNaN -> -NaN Invalid_operation
177minx428 minus -NaN255 -> -NaN255
178minx429 minus -sNaN256 -> -NaN256 Invalid_operation
179
180-- Null tests
181minx900 minus # -> NaN Invalid_operation
182