1 ------------------------------------------------------------------------
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2 -- ddMinus.decTest -- decDouble 0-x --
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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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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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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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22 -- All operands and results are decDoubles.
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31 ddmns001 minus +7.50 -> -7.50
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34 ddmns011 minus Infinity -> -Infinity
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35 ddmns012 minus -Infinity -> Infinity
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38 ddmns021 minus NaN -> NaN
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39 ddmns022 minus -NaN -> -NaN
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40 ddmns023 minus sNaN -> NaN Invalid_operation
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41 ddmns024 minus -sNaN -> -NaN Invalid_operation
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43 -- NaNs, non-0 payload
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44 ddmns031 minus NaN13 -> NaN13
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45 ddmns032 minus -NaN13 -> -NaN13
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46 ddmns033 minus sNaN13 -> NaN13 Invalid_operation
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47 ddmns034 minus -sNaN13 -> -NaN13 Invalid_operation
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48 ddmns035 minus NaN70 -> NaN70
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49 ddmns036 minus -NaN70 -> -NaN70
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50 ddmns037 minus sNaN101 -> NaN101 Invalid_operation
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51 ddmns038 minus -sNaN101 -> -NaN101 Invalid_operation
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54 ddmns101 minus 7 -> -7
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55 ddmns102 minus -7 -> 7
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56 ddmns103 minus 75 -> -75
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57 ddmns104 minus -75 -> 75
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58 ddmns105 minus 7.50 -> -7.50
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59 ddmns106 minus -7.50 -> 7.50
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60 ddmns107 minus 7.500 -> -7.500
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61 ddmns108 minus -7.500 -> 7.500
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64 ddmns111 minus 0 -> 0
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65 ddmns112 minus -0 -> 0
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66 ddmns113 minus 0E+4 -> 0E+4
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67 ddmns114 minus -0E+4 -> 0E+4
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68 ddmns115 minus 0.0000 -> 0.0000
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69 ddmns116 minus -0.0000 -> 0.0000
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70 ddmns117 minus 0E-141 -> 0E-141
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71 ddmns118 minus -0E-141 -> 0E-141
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73 -- full coefficients, alternating bits
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74 ddmns121 minus 2682682682682682 -> -2682682682682682
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75 ddmns122 minus -2682682682682682 -> 2682682682682682
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76 ddmns123 minus 1341341341341341 -> -1341341341341341
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77 ddmns124 minus -1341341341341341 -> 1341341341341341
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79 -- Nmax, Nmin, Ntiny
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80 ddmns131 minus 9.999999999999999E+384 -> -9.999999999999999E+384
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81 ddmns132 minus 1E-383 -> -1E-383
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82 ddmns133 minus 1.000000000000000E-383 -> -1.000000000000000E-383
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83 ddmns134 minus 1E-398 -> -1E-398 Subnormal
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85 ddmns135 minus -1E-398 -> 1E-398 Subnormal
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86 ddmns136 minus -1.000000000000000E-383 -> 1.000000000000000E-383
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87 ddmns137 minus -1E-383 -> 1E-383
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88 ddmns138 minus -9.999999999999999E+384 -> 9.999999999999999E+384
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