mirror of https://github.com/python/cpython
89 lines
3.7 KiB
Plaintext
89 lines
3.7 KiB
Plaintext
------------------------------------------------------------------------
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-- ddMinus.decTest -- decDouble 0-x --
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-- Copyright (c) IBM Corporation, 1981, 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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-- All operands and results are decDoubles.
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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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-- Sanity check
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ddmns001 minus +7.50 -> -7.50
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-- Infinities
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ddmns011 minus Infinity -> -Infinity
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ddmns012 minus -Infinity -> Infinity
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-- NaNs, 0 payload
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ddmns021 minus NaN -> NaN
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ddmns022 minus -NaN -> -NaN
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ddmns023 minus sNaN -> NaN Invalid_operation
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ddmns024 minus -sNaN -> -NaN Invalid_operation
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-- NaNs, non-0 payload
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ddmns031 minus NaN13 -> NaN13
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ddmns032 minus -NaN13 -> -NaN13
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ddmns033 minus sNaN13 -> NaN13 Invalid_operation
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ddmns034 minus -sNaN13 -> -NaN13 Invalid_operation
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ddmns035 minus NaN70 -> NaN70
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ddmns036 minus -NaN70 -> -NaN70
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ddmns037 minus sNaN101 -> NaN101 Invalid_operation
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ddmns038 minus -sNaN101 -> -NaN101 Invalid_operation
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-- finites
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ddmns101 minus 7 -> -7
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ddmns102 minus -7 -> 7
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ddmns103 minus 75 -> -75
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ddmns104 minus -75 -> 75
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ddmns105 minus 7.50 -> -7.50
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ddmns106 minus -7.50 -> 7.50
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ddmns107 minus 7.500 -> -7.500
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ddmns108 minus -7.500 -> 7.500
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-- zeros
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ddmns111 minus 0 -> 0
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ddmns112 minus -0 -> 0
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ddmns113 minus 0E+4 -> 0E+4
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ddmns114 minus -0E+4 -> 0E+4
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ddmns115 minus 0.0000 -> 0.0000
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ddmns116 minus -0.0000 -> 0.0000
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ddmns117 minus 0E-141 -> 0E-141
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ddmns118 minus -0E-141 -> 0E-141
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-- full coefficients, alternating bits
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ddmns121 minus 2682682682682682 -> -2682682682682682
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ddmns122 minus -2682682682682682 -> 2682682682682682
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ddmns123 minus 1341341341341341 -> -1341341341341341
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ddmns124 minus -1341341341341341 -> 1341341341341341
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-- Nmax, Nmin, Ntiny
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ddmns131 minus 9.999999999999999E+384 -> -9.999999999999999E+384
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ddmns132 minus 1E-383 -> -1E-383
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ddmns133 minus 1.000000000000000E-383 -> -1.000000000000000E-383
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ddmns134 minus 1E-398 -> -1E-398 Subnormal
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ddmns135 minus -1E-398 -> 1E-398 Subnormal
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ddmns136 minus -1.000000000000000E-383 -> 1.000000000000000E-383
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ddmns137 minus -1E-383 -> 1E-383
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ddmns138 minus -9.999999999999999E+384 -> 9.999999999999999E+384
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