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- ------------------------------------------------------------------------
- -- minus.decTest -- decimal negation --
- -- Copyright (c) IBM Corporation, 1981, 2008. 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: 2.59
- -- This set of tests primarily tests the existence of the operator.
- -- Subtraction, rounding, and more overflows are tested elsewhere.
- extended: 1
- precision: 9
- rounding: half_up
- maxExponent: 384
- minexponent: -383
- minx001 minus '1' -> '-1'
- minx002 minus '-1' -> '1'
- minx003 minus '1.00' -> '-1.00'
- minx004 minus '-1.00' -> '1.00'
- minx005 minus '0' -> '0'
- minx006 minus '0.00' -> '0.00'
- minx007 minus '00.0' -> '0.0'
- minx008 minus '00.00' -> '0.00'
- minx009 minus '00' -> '0'
- minx010 minus '-2' -> '2'
- minx011 minus '2' -> '-2'
- minx012 minus '-2.00' -> '2.00'
- minx013 minus '2.00' -> '-2.00'
- minx014 minus '-0' -> '0'
- minx015 minus '-0.00' -> '0.00'
- minx016 minus '-00.0' -> '0.0'
- minx017 minus '-00.00' -> '0.00'
- minx018 minus '-00' -> '0'
- -- "lhs" zeros in plus and minus have exponent = operand
- minx020 minus '-0E3' -> '0E+3'
- minx021 minus '-0E2' -> '0E+2'
- minx022 minus '-0E1' -> '0E+1'
- minx023 minus '-0E0' -> '0'
- minx024 minus '+0E0' -> '0'
- minx025 minus '+0E1' -> '0E+1'
- minx026 minus '+0E2' -> '0E+2'
- minx027 minus '+0E3' -> '0E+3'
- minx030 minus '-5E3' -> '5E+3'
- minx031 minus '-5E8' -> '5E+8'
- minx032 minus '-5E13' -> '5E+13'
- minx033 minus '-5E18' -> '5E+18'
- minx034 minus '+5E3' -> '-5E+3'
- minx035 minus '+5E8' -> '-5E+8'
- minx036 minus '+5E13' -> '-5E+13'
- minx037 minus '+5E18' -> '-5E+18'
- minx050 minus '-2000000' -> '2000000'
- minx051 minus '2000000' -> '-2000000'
- precision: 7
- minx052 minus '-2000000' -> '2000000'
- minx053 minus '2000000' -> '-2000000'
- precision: 6
- minx054 minus '-2000000' -> '2.00000E+6' Rounded
- minx055 minus '2000000' -> '-2.00000E+6' Rounded
- precision: 3
- minx056 minus '-2000000' -> '2.00E+6' Rounded
- minx057 minus '2000000' -> '-2.00E+6' Rounded
- -- more fixed, potential LHS swaps/overlays if done by 0 subtract x
- precision: 9
- minx060 minus '56267E-10' -> '-0.0000056267'
- minx061 minus '56267E-5' -> '-0.56267'
- minx062 minus '56267E-2' -> '-562.67'
- minx063 minus '56267E-1' -> '-5626.7'
- minx065 minus '56267E-0' -> '-56267'
- minx066 minus '56267E+0' -> '-56267'
- minx067 minus '56267E+1' -> '-5.6267E+5'
- minx068 minus '56267E+2' -> '-5.6267E+6'
- minx069 minus '56267E+3' -> '-5.6267E+7'
- minx070 minus '56267E+4' -> '-5.6267E+8'
- minx071 minus '56267E+5' -> '-5.6267E+9'
- minx072 minus '56267E+6' -> '-5.6267E+10'
- minx080 minus '-56267E-10' -> '0.0000056267'
- minx081 minus '-56267E-5' -> '0.56267'
- minx082 minus '-56267E-2' -> '562.67'
- minx083 minus '-56267E-1' -> '5626.7'
- minx085 minus '-56267E-0' -> '56267'
- minx086 minus '-56267E+0' -> '56267'
- minx087 minus '-56267E+1' -> '5.6267E+5'
- minx088 minus '-56267E+2' -> '5.6267E+6'
- minx089 minus '-56267E+3' -> '5.6267E+7'
- minx090 minus '-56267E+4' -> '5.6267E+8'
- minx091 minus '-56267E+5' -> '5.6267E+9'
- minx092 minus '-56267E+6' -> '5.6267E+10'
- -- overflow tests
- maxexponent: 999999999
- minexponent: -999999999
- precision: 3
- minx100 minus 9.999E+999999999 -> -Infinity Inexact Overflow Rounded
- minx101 minus -9.999E+999999999 -> Infinity Inexact Overflow Rounded
- -- subnormals and underflow
- precision: 3
- maxexponent: 999
- minexponent: -999
- minx110 minus 1.00E-999 -> -1.00E-999
- minx111 minus 0.1E-999 -> -1E-1000 Subnormal
- minx112 minus 0.10E-999 -> -1.0E-1000 Subnormal
- minx113 minus 0.100E-999 -> -1.0E-1000 Subnormal Rounded
- minx114 minus 0.01E-999 -> -1E-1001 Subnormal
- -- next is rounded to Emin
- minx115 minus 0.999E-999 -> -1.00E-999 Inexact Rounded Subnormal Underflow
- minx116 minus 0.099E-999 -> -1.0E-1000 Inexact Rounded Subnormal Underflow
- minx117 minus 0.009E-999 -> -1E-1001 Inexact Rounded Subnormal Underflow
- minx118 minus 0.001E-999 -> -0E-1001 Inexact Rounded Subnormal Underflow Clamped
- minx119 minus 0.0009E-999 -> -0E-1001 Inexact Rounded Subnormal Underflow Clamped
- minx120 minus 0.0001E-999 -> -0E-1001 Inexact Rounded Subnormal Underflow Clamped
- minx130 minus -1.00E-999 -> 1.00E-999
- minx131 minus -0.1E-999 -> 1E-1000 Subnormal
- minx132 minus -0.10E-999 -> 1.0E-1000 Subnormal
- minx133 minus -0.100E-999 -> 1.0E-1000 Subnormal Rounded
- minx134 minus -0.01E-999 -> 1E-1001 Subnormal
- -- next is rounded to Emin
- minx135 minus -0.999E-999 -> 1.00E-999 Inexact Rounded Subnormal Underflow
- minx136 minus -0.099E-999 -> 1.0E-1000 Inexact Rounded Subnormal Underflow
- minx137 minus -0.009E-999 -> 1E-1001 Inexact Rounded Subnormal Underflow
- minx138 minus -0.001E-999 -> 0E-1001 Inexact Rounded Subnormal Underflow Clamped
- minx139 minus -0.0009E-999 -> 0E-1001 Inexact Rounded Subnormal Underflow Clamped
- minx140 minus -0.0001E-999 -> 0E-1001 Inexact Rounded Subnormal Underflow Clamped
- -- long operand checks
- maxexponent: 999
- minexponent: -999
- precision: 9
- minx301 minus 12345678000 -> -1.23456780E+10 Rounded
- minx302 minus 1234567800 -> -1.23456780E+9 Rounded
- minx303 minus 1234567890 -> -1.23456789E+9 Rounded
- minx304 minus 1234567891 -> -1.23456789E+9 Inexact Rounded
- minx305 minus 12345678901 -> -1.23456789E+10 Inexact Rounded
- minx306 minus 1234567896 -> -1.23456790E+9 Inexact Rounded
- precision: 15
- -- still checking
- minx321 minus 12345678000 -> -12345678000
- minx322 minus 1234567800 -> -1234567800
- minx323 minus 1234567890 -> -1234567890
- minx324 minus 1234567891 -> -1234567891
- minx325 minus 12345678901 -> -12345678901
- minx326 minus 1234567896 -> -1234567896
- -- specials
- minx420 minus 'Inf' -> '-Infinity'
- minx421 minus '-Inf' -> 'Infinity'
- minx422 minus NaN -> NaN
- minx423 minus sNaN -> NaN Invalid_operation
- minx424 minus NaN255 -> NaN255
- minx425 minus sNaN256 -> NaN256 Invalid_operation
- minx426 minus -NaN -> -NaN
- minx427 minus -sNaN -> -NaN Invalid_operation
- minx428 minus -NaN255 -> -NaN255
- minx429 minus -sNaN256 -> -NaN256 Invalid_operation
- -- Null tests
- minx900 minus # -> NaN Invalid_operation
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