1------------------------------------------------------------------------ 2-- minus.decTest -- decimal negation -- 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-- This set of tests primarily tests the existence of the operator. 23-- Subtraction, rounding, and more overflows are tested elsewhere. 24 25extended: 1 26precision: 9 27rounding: half_up 28maxExponent: 384 29minexponent: -383 30 31minx001 minus '1' -> '-1' 32minx002 minus '-1' -> '1' 33minx003 minus '1.00' -> '-1.00' 34minx004 minus '-1.00' -> '1.00' 35minx005 minus '0' -> '0' 36minx006 minus '0.00' -> '0.00' 37minx007 minus '00.0' -> '0.0' 38minx008 minus '00.00' -> '0.00' 39minx009 minus '00' -> '0' 40 41minx010 minus '-2' -> '2' 42minx011 minus '2' -> '-2' 43minx012 minus '-2.00' -> '2.00' 44minx013 minus '2.00' -> '-2.00' 45minx014 minus '-0' -> '0' 46minx015 minus '-0.00' -> '0.00' 47minx016 minus '-00.0' -> '0.0' 48minx017 minus '-00.00' -> '0.00' 49minx018 minus '-00' -> '0' 50 51-- "lhs" zeros in plus and minus have exponent = operand 52minx020 minus '-0E3' -> '0E+3' 53minx021 minus '-0E2' -> '0E+2' 54minx022 minus '-0E1' -> '0E+1' 55minx023 minus '-0E0' -> '0' 56minx024 minus '+0E0' -> '0' 57minx025 minus '+0E1' -> '0E+1' 58minx026 minus '+0E2' -> '0E+2' 59minx027 minus '+0E3' -> '0E+3' 60 61minx030 minus '-5E3' -> '5E+3' 62minx031 minus '-5E8' -> '5E+8' 63minx032 minus '-5E13' -> '5E+13' 64minx033 minus '-5E18' -> '5E+18' 65minx034 minus '+5E3' -> '-5E+3' 66minx035 minus '+5E8' -> '-5E+8' 67minx036 minus '+5E13' -> '-5E+13' 68minx037 minus '+5E18' -> '-5E+18' 69 70minx050 minus '-2000000' -> '2000000' 71minx051 minus '2000000' -> '-2000000' 72precision: 7 73minx052 minus '-2000000' -> '2000000' 74minx053 minus '2000000' -> '-2000000' 75precision: 6 76minx054 minus '-2000000' -> '2.00000E+6' Rounded 77minx055 minus '2000000' -> '-2.00000E+6' Rounded 78precision: 3 79minx056 minus '-2000000' -> '2.00E+6' Rounded 80minx057 minus '2000000' -> '-2.00E+6' Rounded 81 82-- more fixed, potential LHS swaps/overlays if done by 0 subtract x 83precision: 9 84minx060 minus '56267E-10' -> '-0.0000056267' 85minx061 minus '56267E-5' -> '-0.56267' 86minx062 minus '56267E-2' -> '-562.67' 87minx063 minus '56267E-1' -> '-5626.7' 88minx065 minus '56267E-0' -> '-56267' 89minx066 minus '56267E+0' -> '-56267' 90minx067 minus '56267E+1' -> '-5.6267E+5' 91minx068 minus '56267E+2' -> '-5.6267E+6' 92minx069 minus '56267E+3' -> '-5.6267E+7' 93minx070 minus '56267E+4' -> '-5.6267E+8' 94minx071 minus '56267E+5' -> '-5.6267E+9' 95minx072 minus '56267E+6' -> '-5.6267E+10' 96minx080 minus '-56267E-10' -> '0.0000056267' 97minx081 minus '-56267E-5' -> '0.56267' 98minx082 minus '-56267E-2' -> '562.67' 99minx083 minus '-56267E-1' -> '5626.7' 100minx085 minus '-56267E-0' -> '56267' 101minx086 minus '-56267E+0' -> '56267' 102minx087 minus '-56267E+1' -> '5.6267E+5' 103minx088 minus '-56267E+2' -> '5.6267E+6' 104minx089 minus '-56267E+3' -> '5.6267E+7' 105minx090 minus '-56267E+4' -> '5.6267E+8' 106minx091 minus '-56267E+5' -> '5.6267E+9' 107minx092 minus '-56267E+6' -> '5.6267E+10' 108 109 110-- overflow tests 111maxexponent: 999999999 112minexponent: -999999999 113precision: 3 114minx100 minus 9.999E+999999999 -> -Infinity Inexact Overflow Rounded 115minx101 minus -9.999E+999999999 -> Infinity Inexact Overflow Rounded 116 117-- subnormals and underflow 118precision: 3 119maxexponent: 999 120minexponent: -999 121minx110 minus 1.00E-999 -> -1.00E-999 122minx111 minus 0.1E-999 -> -1E-1000 Subnormal 123minx112 minus 0.10E-999 -> -1.0E-1000 Subnormal 124minx113 minus 0.100E-999 -> -1.0E-1000 Subnormal Rounded 125minx114 minus 0.01E-999 -> -1E-1001 Subnormal 126-- next is rounded to Emin 127minx115 minus 0.999E-999 -> -1.00E-999 Inexact Rounded Subnormal Underflow 128minx116 minus 0.099E-999 -> -1.0E-1000 Inexact Rounded Subnormal Underflow 129minx117 minus 0.009E-999 -> -1E-1001 Inexact Rounded Subnormal Underflow 130minx118 minus 0.001E-999 -> -0E-1001 Inexact Rounded Subnormal Underflow Clamped 131minx119 minus 0.0009E-999 -> -0E-1001 Inexact Rounded Subnormal Underflow Clamped 132minx120 minus 0.0001E-999 -> -0E-1001 Inexact Rounded Subnormal Underflow Clamped 133 134minx130 minus -1.00E-999 -> 1.00E-999 135minx131 minus -0.1E-999 -> 1E-1000 Subnormal 136minx132 minus -0.10E-999 -> 1.0E-1000 Subnormal 137minx133 minus -0.100E-999 -> 1.0E-1000 Subnormal Rounded 138minx134 minus -0.01E-999 -> 1E-1001 Subnormal 139-- next is rounded to Emin 140minx135 minus -0.999E-999 -> 1.00E-999 Inexact Rounded Subnormal Underflow 141minx136 minus -0.099E-999 -> 1.0E-1000 Inexact Rounded Subnormal Underflow 142minx137 minus -0.009E-999 -> 1E-1001 Inexact Rounded Subnormal Underflow 143minx138 minus -0.001E-999 -> 0E-1001 Inexact Rounded Subnormal Underflow Clamped 144minx139 minus -0.0009E-999 -> 0E-1001 Inexact Rounded Subnormal Underflow Clamped 145minx140 minus -0.0001E-999 -> 0E-1001 Inexact Rounded Subnormal Underflow Clamped 146 147 148-- long operand checks 149maxexponent: 999 150minexponent: -999 151precision: 9 152minx301 minus 12345678000 -> -1.23456780E+10 Rounded 153minx302 minus 1234567800 -> -1.23456780E+9 Rounded 154minx303 minus 1234567890 -> -1.23456789E+9 Rounded 155minx304 minus 1234567891 -> -1.23456789E+9 Inexact Rounded 156minx305 minus 12345678901 -> -1.23456789E+10 Inexact Rounded 157minx306 minus 1234567896 -> -1.23456790E+9 Inexact Rounded 158 159precision: 15 160-- still checking 161minx321 minus 12345678000 -> -12345678000 162minx322 minus 1234567800 -> -1234567800 163minx323 minus 1234567890 -> -1234567890 164minx324 minus 1234567891 -> -1234567891 165minx325 minus 12345678901 -> -12345678901 166minx326 minus 1234567896 -> -1234567896 167 168-- specials 169minx420 minus 'Inf' -> '-Infinity' 170minx421 minus '-Inf' -> 'Infinity' 171minx422 minus NaN -> NaN 172minx423 minus sNaN -> NaN Invalid_operation 173minx424 minus NaN255 -> NaN255 174minx425 minus sNaN256 -> NaN256 Invalid_operation 175minx426 minus -NaN -> -NaN 176minx427 minus -sNaN -> -NaN Invalid_operation 177minx428 minus -NaN255 -> -NaN255 178minx429 minus -sNaN256 -> -NaN256 Invalid_operation 179 180-- Null tests 181minx900 minus # -> NaN Invalid_operation 182 183