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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