1------------------------------------------------------------------------ 2-- ddMinus.decTest -- decDouble 0-x -- 3-- Copyright (c) IBM Corporation, 1981, 2008. All rights reserved. -- 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------------------------------------------------------------------------ 20version: 2.59 21 22-- All operands and results are decDoubles. 23precision: 16 24maxExponent: 384 25minExponent: -383 26extended: 1 27clamp: 1 28rounding: half_even 29 30-- Sanity check 31ddmns001 minus +7.50 -> -7.50 32 33-- Infinities 34ddmns011 minus Infinity -> -Infinity 35ddmns012 minus -Infinity -> Infinity 36 37-- NaNs, 0 payload 38ddmns021 minus NaN -> NaN 39ddmns022 minus -NaN -> -NaN 40ddmns023 minus sNaN -> NaN Invalid_operation 41ddmns024 minus -sNaN -> -NaN Invalid_operation 42 43-- NaNs, non-0 payload 44ddmns031 minus NaN13 -> NaN13 45ddmns032 minus -NaN13 -> -NaN13 46ddmns033 minus sNaN13 -> NaN13 Invalid_operation 47ddmns034 minus -sNaN13 -> -NaN13 Invalid_operation 48ddmns035 minus NaN70 -> NaN70 49ddmns036 minus -NaN70 -> -NaN70 50ddmns037 minus sNaN101 -> NaN101 Invalid_operation 51ddmns038 minus -sNaN101 -> -NaN101 Invalid_operation 52 53-- finites 54ddmns101 minus 7 -> -7 55ddmns102 minus -7 -> 7 56ddmns103 minus 75 -> -75 57ddmns104 minus -75 -> 75 58ddmns105 minus 7.50 -> -7.50 59ddmns106 minus -7.50 -> 7.50 60ddmns107 minus 7.500 -> -7.500 61ddmns108 minus -7.500 -> 7.500 62 63-- zeros 64ddmns111 minus 0 -> 0 65ddmns112 minus -0 -> 0 66ddmns113 minus 0E+4 -> 0E+4 67ddmns114 minus -0E+4 -> 0E+4 68ddmns115 minus 0.0000 -> 0.0000 69ddmns116 minus -0.0000 -> 0.0000 70ddmns117 minus 0E-141 -> 0E-141 71ddmns118 minus -0E-141 -> 0E-141 72 73-- full coefficients, alternating bits 74ddmns121 minus 2682682682682682 -> -2682682682682682 75ddmns122 minus -2682682682682682 -> 2682682682682682 76ddmns123 minus 1341341341341341 -> -1341341341341341 77ddmns124 minus -1341341341341341 -> 1341341341341341 78 79-- Nmax, Nmin, Ntiny 80ddmns131 minus 9.999999999999999E+384 -> -9.999999999999999E+384 81ddmns132 minus 1E-383 -> -1E-383 82ddmns133 minus 1.000000000000000E-383 -> -1.000000000000000E-383 83ddmns134 minus 1E-398 -> -1E-398 Subnormal 84 85ddmns135 minus -1E-398 -> 1E-398 Subnormal 86ddmns136 minus -1.000000000000000E-383 -> 1.000000000000000E-383 87ddmns137 minus -1E-383 -> 1E-383 88ddmns138 minus -9.999999999999999E+384 -> 9.999999999999999E+384 89