------------------------------------------------------------------------ -- ddNextMinus.decTest -- decDouble next that is less [754r nextdown] -- -- Copyright (c) IBM Corporation, 1981, 2007. 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: 2.57 -- All operands and results are decDoubles. precision: 16 maxExponent: 384 minExponent: -383 extended: 1 clamp: 1 rounding: half_even ddnextm001 nextminus 0.9999999999999995 -> 0.9999999999999994 ddnextm002 nextminus 0.9999999999999996 -> 0.9999999999999995 ddnextm003 nextminus 0.9999999999999997 -> 0.9999999999999996 ddnextm004 nextminus 0.9999999999999998 -> 0.9999999999999997 ddnextm005 nextminus 0.9999999999999999 -> 0.9999999999999998 ddnextm006 nextminus 1.000000000000000 -> 0.9999999999999999 ddnextm007 nextminus 1.0 -> 0.9999999999999999 ddnextm008 nextminus 1 -> 0.9999999999999999 ddnextm009 nextminus 1.000000000000001 -> 1.000000000000000 ddnextm010 nextminus 1.000000000000002 -> 1.000000000000001 ddnextm011 nextminus 1.000000000000003 -> 1.000000000000002 ddnextm012 nextminus 1.000000000000004 -> 1.000000000000003 ddnextm013 nextminus 1.000000000000005 -> 1.000000000000004 ddnextm014 nextminus 1.000000000000006 -> 1.000000000000005 ddnextm015 nextminus 1.000000000000007 -> 1.000000000000006 ddnextm016 nextminus 1.000000000000008 -> 1.000000000000007 ddnextm017 nextminus 1.000000000000009 -> 1.000000000000008 ddnextm018 nextminus 1.000000000000010 -> 1.000000000000009 ddnextm019 nextminus 1.000000000000011 -> 1.000000000000010 ddnextm020 nextminus 1.000000000000012 -> 1.000000000000011 ddnextm021 nextminus -0.9999999999999995 -> -0.9999999999999996 ddnextm022 nextminus -0.9999999999999996 -> -0.9999999999999997 ddnextm023 nextminus -0.9999999999999997 -> -0.9999999999999998 ddnextm024 nextminus -0.9999999999999998 -> -0.9999999999999999 ddnextm025 nextminus -0.9999999999999999 -> -1.000000000000000 ddnextm026 nextminus -1.000000000000000 -> -1.000000000000001 ddnextm027 nextminus -1.0 -> -1.000000000000001 ddnextm028 nextminus -1 -> -1.000000000000001 ddnextm029 nextminus -1.000000000000001 -> -1.000000000000002 ddnextm030 nextminus -1.000000000000002 -> -1.000000000000003 ddnextm031 nextminus -1.000000000000003 -> -1.000000000000004 ddnextm032 nextminus -1.000000000000004 -> -1.000000000000005 ddnextm033 nextminus -1.000000000000005 -> -1.000000000000006 ddnextm034 nextminus -1.000000000000006 -> -1.000000000000007 ddnextm035 nextminus -1.000000000000007 -> -1.000000000000008 ddnextm036 nextminus -1.000000000000008 -> -1.000000000000009 ddnextm037 nextminus -1.000000000000009 -> -1.000000000000010 ddnextm038 nextminus -1.000000000000010 -> -1.000000000000011 ddnextm039 nextminus -1.000000000000011 -> -1.000000000000012 -- ultra-tiny inputs ddnextm062 nextminus 1E-398 -> 0E-398 ddnextm065 nextminus -1E-398 -> -2E-398 -- Zeros ddnextm100 nextminus -0 -> -1E-398 ddnextm101 nextminus 0 -> -1E-398 ddnextm102 nextminus 0.00 -> -1E-398 ddnextm103 nextminus -0.00 -> -1E-398 ddnextm104 nextminus 0E-300 -> -1E-398 ddnextm105 nextminus 0E+300 -> -1E-398 ddnextm106 nextminus 0E+30000 -> -1E-398 ddnextm107 nextminus -0E+30000 -> -1E-398 -- specials ddnextm150 nextminus Inf -> 9.999999999999999E+384 ddnextm151 nextminus -Inf -> -Infinity ddnextm152 nextminus NaN -> NaN ddnextm153 nextminus sNaN -> NaN Invalid_operation ddnextm154 nextminus NaN77 -> NaN77 ddnextm155 nextminus sNaN88 -> NaN88 Invalid_operation ddnextm156 nextminus -NaN -> -NaN ddnextm157 nextminus -sNaN -> -NaN Invalid_operation ddnextm158 nextminus -NaN77 -> -NaN77 ddnextm159 nextminus -sNaN88 -> -NaN88 Invalid_operation -- Nmax, Nmin, Ntiny, subnormals ddnextm170 nextminus 9.999999999999999E+384 -> 9.999999999999998E+384 ddnextm171 nextminus 9.999999999999998E+384 -> 9.999999999999997E+384 ddnextm172 nextminus 1E-383 -> 9.99999999999999E-384 ddnextm173 nextminus 1.000000000000000E-383 -> 9.99999999999999E-384 ddnextm174 nextminus 9E-398 -> 8E-398 ddnextm175 nextminus 9.9E-397 -> 9.8E-397 ddnextm176 nextminus 9.99999999999E-387 -> 9.99999999998E-387 ddnextm177 nextminus 9.99999999999999E-384 -> 9.99999999999998E-384 ddnextm178 nextminus 9.99999999999998E-384 -> 9.99999999999997E-384 ddnextm179 nextminus 9.99999999999997E-384 -> 9.99999999999996E-384 ddnextm180 nextminus 0E-398 -> -1E-398 ddnextm181 nextminus 1E-398 -> 0E-398 ddnextm182 nextminus 2E-398 -> 1E-398 ddnextm183 nextminus -0E-398 -> -1E-398 ddnextm184 nextminus -1E-398 -> -2E-398 ddnextm185 nextminus -2E-398 -> -3E-398 ddnextm186 nextminus -10E-398 -> -1.1E-397 ddnextm187 nextminus -100E-398 -> -1.01E-396 ddnextm188 nextminus -100000E-398 -> -1.00001E-393 ddnextm189 nextminus -1.00000000000E-383 -> -1.000000000000001E-383 ddnextm190 nextminus -1.000000000000000E-383 -> -1.000000000000001E-383 ddnextm191 nextminus -1E-383 -> -1.000000000000001E-383 ddnextm192 nextminus -9.999999999999998E+384 -> -9.999999999999999E+384 ddnextm193 nextminus -9.999999999999999E+384 -> -Infinity -- Null tests ddnextm900 nextminus # -> NaN Invalid_operation