/usr/lib/python2.7/test/decimaltestdata/class.decTest is in libpython2.7-testsuite 2.7.6-8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- class.decTest -- Class operations --
-- 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
-- [New 2006.11.27]
precision: 9
maxExponent: 999
minExponent: -999
extended: 1
clamp: 1
rounding: half_even
clasx001 class 0 -> +Zero
clasx002 class 0.00 -> +Zero
clasx003 class 0E+5 -> +Zero
clasx004 class 1E-1007 -> +Subnormal
clasx005 class 0.1E-999 -> +Subnormal
clasx006 class 0.99999999E-999 -> +Subnormal
clasx007 class 1.00000000E-999 -> +Normal
clasx008 class 1E-999 -> +Normal
clasx009 class 1E-100 -> +Normal
clasx010 class 1E-10 -> +Normal
clasx012 class 1E-1 -> +Normal
clasx013 class 1 -> +Normal
clasx014 class 2.50 -> +Normal
clasx015 class 100.100 -> +Normal
clasx016 class 1E+30 -> +Normal
clasx017 class 1E+999 -> +Normal
clasx018 class 9.99999999E+999 -> +Normal
clasx019 class Inf -> +Infinity
clasx021 class -0 -> -Zero
clasx022 class -0.00 -> -Zero
clasx023 class -0E+5 -> -Zero
clasx024 class -1E-1007 -> -Subnormal
clasx025 class -0.1E-999 -> -Subnormal
clasx026 class -0.99999999E-999 -> -Subnormal
clasx027 class -1.00000000E-999 -> -Normal
clasx028 class -1E-999 -> -Normal
clasx029 class -1E-100 -> -Normal
clasx030 class -1E-10 -> -Normal
clasx032 class -1E-1 -> -Normal
clasx033 class -1 -> -Normal
clasx034 class -2.50 -> -Normal
clasx035 class -100.100 -> -Normal
clasx036 class -1E+30 -> -Normal
clasx037 class -1E+999 -> -Normal
clasx038 class -9.99999999E+999 -> -Normal
clasx039 class -Inf -> -Infinity
clasx041 class NaN -> NaN
clasx042 class -NaN -> NaN
clasx043 class +NaN12345 -> NaN
clasx044 class sNaN -> sNaN
clasx045 class -sNaN -> sNaN
clasx046 class +sNaN12345 -> sNaN
-- decimal64 bounds
precision: 16
maxExponent: 384
minExponent: -383
clamp: 1
rounding: half_even
clasx201 class 0 -> +Zero
clasx202 class 0.00 -> +Zero
clasx203 class 0E+5 -> +Zero
clasx204 class 1E-396 -> +Subnormal
clasx205 class 0.1E-383 -> +Subnormal
clasx206 class 0.999999999999999E-383 -> +Subnormal
clasx207 class 1.000000000000000E-383 -> +Normal
clasx208 class 1E-383 -> +Normal
clasx209 class 1E-100 -> +Normal
clasx210 class 1E-10 -> +Normal
clasx212 class 1E-1 -> +Normal
clasx213 class 1 -> +Normal
clasx214 class 2.50 -> +Normal
clasx215 class 100.100 -> +Normal
clasx216 class 1E+30 -> +Normal
clasx217 class 1E+384 -> +Normal
clasx218 class 9.999999999999999E+384 -> +Normal
clasx219 class Inf -> +Infinity
clasx221 class -0 -> -Zero
clasx222 class -0.00 -> -Zero
clasx223 class -0E+5 -> -Zero
clasx224 class -1E-396 -> -Subnormal
clasx225 class -0.1E-383 -> -Subnormal
clasx226 class -0.999999999999999E-383 -> -Subnormal
clasx227 class -1.000000000000000E-383 -> -Normal
clasx228 class -1E-383 -> -Normal
clasx229 class -1E-100 -> -Normal
clasx230 class -1E-10 -> -Normal
clasx232 class -1E-1 -> -Normal
clasx233 class -1 -> -Normal
clasx234 class -2.50 -> -Normal
clasx235 class -100.100 -> -Normal
clasx236 class -1E+30 -> -Normal
clasx237 class -1E+384 -> -Normal
clasx238 class -9.999999999999999E+384 -> -Normal
clasx239 class -Inf -> -Infinity
clasx241 class NaN -> NaN
clasx242 class -NaN -> NaN
clasx243 class +NaN12345 -> NaN
clasx244 class sNaN -> sNaN
clasx245 class -sNaN -> sNaN
clasx246 class +sNaN12345 -> sNaN
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