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			636 lines
		
	
	
		
			40 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
------------------------------------------------------------------------
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-- dqSubtract.decTest -- decQuad subtraction                          --
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-- Copyright (c) IBM Corporation, 1981, 2008.  All rights reserved.   --
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------------------------------------------------------------------------
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-- Please see the document "General Decimal Arithmetic Testcases"     --
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-- at http://www2.hursley.ibm.com/decimal for the description of      --
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-- these testcases.                                                   --
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--                                                                    --
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-- These testcases are experimental ('beta' versions), and they       --
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-- may contain errors.  They are offered on an as-is basis.  In       --
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-- particular, achieving the same results as the tests here is not    --
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-- a guarantee that an implementation complies with any Standard      --
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-- or specification.  The tests are not exhaustive.                   --
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--                                                                    --
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-- Please send comments, suggestions, and corrections to the author:  --
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--   Mike Cowlishaw, IBM Fellow                                       --
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--   IBM UK, PO Box 31, Birmingham Road, Warwick CV34 5JL, UK         --
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--   mfc@uk.ibm.com                                                   --
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------------------------------------------------------------------------
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version: 2.59
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-- This set of tests are for decQuads only; all arguments are
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-- representable in a decQuad
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extended:    1
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clamp:       1
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precision:   34
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maxExponent: 6144
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minExponent: -6143
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rounding:    half_even
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-- [first group are 'quick confidence check']
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dqsub001 subtract  0   0  -> '0'
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dqsub002 subtract  1   1  -> '0'
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dqsub003 subtract  1   2  -> '-1'
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dqsub004 subtract  2   1  -> '1'
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dqsub005 subtract  2   2  -> '0'
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dqsub006 subtract  3   2  -> '1'
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dqsub007 subtract  2   3  -> '-1'
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dqsub011 subtract -0   0  -> '-0'
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dqsub012 subtract -1   1  -> '-2'
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dqsub013 subtract -1   2  -> '-3'
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dqsub014 subtract -2   1  -> '-3'
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dqsub015 subtract -2   2  -> '-4'
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dqsub016 subtract -3   2  -> '-5'
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dqsub017 subtract -2   3  -> '-5'
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dqsub021 subtract  0  -0  -> '0'
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dqsub022 subtract  1  -1  -> '2'
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dqsub023 subtract  1  -2  -> '3'
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dqsub024 subtract  2  -1  -> '3'
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dqsub025 subtract  2  -2  -> '4'
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dqsub026 subtract  3  -2  -> '5'
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dqsub027 subtract  2  -3  -> '5'
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dqsub030 subtract  11  1  -> 10
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dqsub031 subtract  10  1  ->  9
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dqsub032 subtract  9   1  ->  8
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dqsub033 subtract  1   1  ->  0
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dqsub034 subtract  0   1  -> -1
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dqsub035 subtract -1   1  -> -2
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dqsub036 subtract -9   1  -> -10
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dqsub037 subtract -10  1  -> -11
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dqsub038 subtract -11  1  -> -12
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dqsub040 subtract '5.75' '3.3'  -> '2.45'
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dqsub041 subtract '5'    '-3'   -> '8'
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dqsub042 subtract '-5'   '-3'   -> '-2'
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dqsub043 subtract '-7'   '2.5'  -> '-9.5'
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dqsub044 subtract '0.7'  '0.3'  -> '0.4'
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dqsub045 subtract '1.3'  '0.3'  -> '1.0'
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dqsub046 subtract '1.25' '1.25' -> '0.00'
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dqsub050 subtract '1.23456789'    '1.00000000' -> '0.23456789'
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dqsub051 subtract '1.23456789'    '1.00000089' -> '0.23456700'
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dqsub060 subtract '70'    '10000e+34' -> '-1.000000000000000000000000000000000E+38' Inexact Rounded
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dqsub061 subtract '700'    '10000e+34' -> '-1.000000000000000000000000000000000E+38' Inexact Rounded
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dqsub062 subtract '7000'    '10000e+34' -> '-9.999999999999999999999999999999999E+37' Inexact Rounded
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dqsub063 subtract '70000'    '10000e+34' -> '-9.999999999999999999999999999999993E+37' Rounded
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dqsub064 subtract '700000'    '10000e+34' -> '-9.999999999999999999999999999999930E+37' Rounded
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  -- symmetry:
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dqsub065 subtract '10000e+34'    '70' -> '1.000000000000000000000000000000000E+38' Inexact Rounded
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dqsub066 subtract '10000e+34'    '700' -> '1.000000000000000000000000000000000E+38' Inexact Rounded
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dqsub067 subtract '10000e+34'    '7000' -> '9.999999999999999999999999999999999E+37' Inexact Rounded
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dqsub068 subtract '10000e+34'    '70000' -> '9.999999999999999999999999999999993E+37' Rounded
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dqsub069 subtract '10000e+34'    '700000' -> '9.999999999999999999999999999999930E+37' Rounded
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  -- some of the next group are really constructor tests
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dqsub090 subtract '00.0'    '0.0'  -> '0.0'
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dqsub091 subtract '00.0'    '0.00' -> '0.00'
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dqsub092 subtract '0.00'    '00.0' -> '0.00'
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dqsub093 subtract '00.0'    '0.00' -> '0.00'
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dqsub094 subtract '0.00'    '00.0' -> '0.00'
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dqsub095 subtract '3'    '.3'   -> '2.7'
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dqsub096 subtract '3.'   '.3'   -> '2.7'
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dqsub097 subtract '3.0'  '.3'   -> '2.7'
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dqsub098 subtract '3.00' '.3'   -> '2.70'
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dqsub099 subtract '3'    '3'    -> '0'
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dqsub100 subtract '3'    '+3'   -> '0'
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dqsub101 subtract '3'    '-3'   -> '6'
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dqsub102 subtract '3'    '0.3'  -> '2.7'
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dqsub103 subtract '3.'   '0.3'  -> '2.7'
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dqsub104 subtract '3.0'  '0.3'  -> '2.7'
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dqsub105 subtract '3.00' '0.3'  -> '2.70'
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dqsub106 subtract '3'    '3.0'  -> '0.0'
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dqsub107 subtract '3'    '+3.0' -> '0.0'
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dqsub108 subtract '3'    '-3.0' -> '6.0'
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-- the above all from add; massaged and extended.  Now some new ones...
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-- [particularly important for comparisons]
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-- NB: -xE-8 below were non-exponents pre-ANSI X3-274, and -1E-7 or 0E-7
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-- with input rounding.
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dqsub120 subtract  '10.23456784'    '10.23456789'  -> '-5E-8'
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dqsub121 subtract  '10.23456785'    '10.23456789'  -> '-4E-8'
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dqsub122 subtract  '10.23456786'    '10.23456789'  -> '-3E-8'
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dqsub123 subtract  '10.23456787'    '10.23456789'  -> '-2E-8'
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dqsub124 subtract  '10.23456788'    '10.23456789'  -> '-1E-8'
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dqsub125 subtract  '10.23456789'    '10.23456789'  -> '0E-8'
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dqsub126 subtract  '10.23456790'    '10.23456789'  -> '1E-8'
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dqsub127 subtract  '10.23456791'    '10.23456789'  -> '2E-8'
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dqsub128 subtract  '10.23456792'    '10.23456789'  -> '3E-8'
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dqsub129 subtract  '10.23456793'    '10.23456789'  -> '4E-8'
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dqsub130 subtract  '10.23456794'    '10.23456789'  -> '5E-8'
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dqsub131 subtract  '10.23456781'    '10.23456786'  -> '-5E-8'
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dqsub132 subtract  '10.23456782'    '10.23456786'  -> '-4E-8'
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dqsub133 subtract  '10.23456783'    '10.23456786'  -> '-3E-8'
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dqsub134 subtract  '10.23456784'    '10.23456786'  -> '-2E-8'
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dqsub135 subtract  '10.23456785'    '10.23456786'  -> '-1E-8'
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dqsub136 subtract  '10.23456786'    '10.23456786'  -> '0E-8'
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dqsub137 subtract  '10.23456787'    '10.23456786'  -> '1E-8'
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dqsub138 subtract  '10.23456788'    '10.23456786'  -> '2E-8'
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dqsub139 subtract  '10.23456789'    '10.23456786'  -> '3E-8'
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dqsub140 subtract  '10.23456790'    '10.23456786'  -> '4E-8'
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dqsub141 subtract  '10.23456791'    '10.23456786'  -> '5E-8'
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dqsub142 subtract  '1'              '0.999999999'  -> '1E-9'
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dqsub143 subtract  '0.999999999'    '1'            -> '-1E-9'
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dqsub144 subtract  '-10.23456780'   '-10.23456786' -> '6E-8'
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dqsub145 subtract  '-10.23456790'   '-10.23456786' -> '-4E-8'
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dqsub146 subtract  '-10.23456791'   '-10.23456786' -> '-5E-8'
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-- additional scaled arithmetic tests [0.97 problem]
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dqsub160 subtract '0'     '.1'      -> '-0.1'
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dqsub161 subtract '00'    '.97983'  -> '-0.97983'
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dqsub162 subtract '0'     '.9'      -> '-0.9'
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dqsub163 subtract '0'     '0.102'   -> '-0.102'
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dqsub164 subtract '0'     '.4'      -> '-0.4'
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dqsub165 subtract '0'     '.307'    -> '-0.307'
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dqsub166 subtract '0'     '.43822'  -> '-0.43822'
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dqsub167 subtract '0'     '.911'    -> '-0.911'
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dqsub168 subtract '.0'    '.02'     -> '-0.02'
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dqsub169 subtract '00'    '.392'    -> '-0.392'
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dqsub170 subtract '0'     '.26'     -> '-0.26'
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dqsub171 subtract '0'     '0.51'    -> '-0.51'
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dqsub172 subtract '0'     '.2234'   -> '-0.2234'
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dqsub173 subtract '0'     '.2'      -> '-0.2'
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dqsub174 subtract '.0'    '.0008'   -> '-0.0008'
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-- 0. on left
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dqsub180 subtract '0.0'     '-.1'      -> '0.1'
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dqsub181 subtract '0.00'    '-.97983'  -> '0.97983'
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dqsub182 subtract '0.0'     '-.9'      -> '0.9'
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dqsub183 subtract '0.0'     '-0.102'   -> '0.102'
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dqsub184 subtract '0.0'     '-.4'      -> '0.4'
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dqsub185 subtract '0.0'     '-.307'    -> '0.307'
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dqsub186 subtract '0.0'     '-.43822'  -> '0.43822'
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dqsub187 subtract '0.0'     '-.911'    -> '0.911'
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dqsub188 subtract '0.0'     '-.02'     -> '0.02'
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dqsub189 subtract '0.00'    '-.392'    -> '0.392'
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dqsub190 subtract '0.0'     '-.26'     -> '0.26'
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dqsub191 subtract '0.0'     '-0.51'    -> '0.51'
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dqsub192 subtract '0.0'     '-.2234'   -> '0.2234'
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dqsub193 subtract '0.0'     '-.2'      -> '0.2'
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dqsub194 subtract '0.0'     '-.0008'   -> '0.0008'
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-- negatives of same
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dqsub200 subtract '0'     '-.1'      -> '0.1'
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dqsub201 subtract '00'    '-.97983'  -> '0.97983'
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dqsub202 subtract '0'     '-.9'      -> '0.9'
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dqsub203 subtract '0'     '-0.102'   -> '0.102'
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dqsub204 subtract '0'     '-.4'      -> '0.4'
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dqsub205 subtract '0'     '-.307'    -> '0.307'
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dqsub206 subtract '0'     '-.43822'  -> '0.43822'
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dqsub207 subtract '0'     '-.911'    -> '0.911'
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dqsub208 subtract '.0'    '-.02'     -> '0.02'
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dqsub209 subtract '00'    '-.392'    -> '0.392'
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dqsub210 subtract '0'     '-.26'     -> '0.26'
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dqsub211 subtract '0'     '-0.51'    -> '0.51'
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dqsub212 subtract '0'     '-.2234'   -> '0.2234'
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dqsub213 subtract '0'     '-.2'      -> '0.2'
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dqsub214 subtract '.0'    '-.0008'   -> '0.0008'
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-- more fixed, LHS swaps [really the same as testcases under add]
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dqsub220 subtract '-56267E-12' 0  -> '-5.6267E-8'
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dqsub221 subtract '-56267E-11' 0  -> '-5.6267E-7'
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dqsub222 subtract '-56267E-10' 0  -> '-0.0000056267'
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dqsub223 subtract '-56267E-9'  0  -> '-0.000056267'
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dqsub224 subtract '-56267E-8'  0  -> '-0.00056267'
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dqsub225 subtract '-56267E-7'  0  -> '-0.0056267'
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dqsub226 subtract '-56267E-6'  0  -> '-0.056267'
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dqsub227 subtract '-56267E-5'  0  -> '-0.56267'
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dqsub228 subtract '-56267E-2'  0  -> '-562.67'
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dqsub229 subtract '-56267E-1'  0  -> '-5626.7'
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dqsub230 subtract '-56267E-0'  0  -> '-56267'
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-- symmetry ...
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dqsub240 subtract 0 '-56267E-12'  -> '5.6267E-8'
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dqsub241 subtract 0 '-56267E-11'  -> '5.6267E-7'
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dqsub242 subtract 0 '-56267E-10'  -> '0.0000056267'
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dqsub243 subtract 0 '-56267E-9'   -> '0.000056267'
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dqsub244 subtract 0 '-56267E-8'   -> '0.00056267'
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dqsub245 subtract 0 '-56267E-7'   -> '0.0056267'
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dqsub246 subtract 0 '-56267E-6'   -> '0.056267'
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dqsub247 subtract 0 '-56267E-5'   -> '0.56267'
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dqsub248 subtract 0 '-56267E-2'   -> '562.67'
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dqsub249 subtract 0 '-56267E-1'   -> '5626.7'
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dqsub250 subtract 0 '-56267E-0'   -> '56267'
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-- now some more from the 'new' add
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dqsub301 subtract '1.23456789'  '1.00000000' -> '0.23456789'
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dqsub302 subtract '1.23456789'  '1.00000011' -> '0.23456778'
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-- some carrying effects
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dqsub321 subtract '0.9998'  '0.0000' -> '0.9998'
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dqsub322 subtract '0.9998'  '0.0001' -> '0.9997'
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dqsub323 subtract '0.9998'  '0.0002' -> '0.9996'
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dqsub324 subtract '0.9998'  '0.0003' -> '0.9995'
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dqsub325 subtract '0.9998'  '-0.0000' -> '0.9998'
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dqsub326 subtract '0.9998'  '-0.0001' -> '0.9999'
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dqsub327 subtract '0.9998'  '-0.0002' -> '1.0000'
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dqsub328 subtract '0.9998'  '-0.0003' -> '1.0001'
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-- internal boundaries
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dqsub346 subtract '10000e+9'  '7'   -> '9999999999993'
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dqsub347 subtract '10000e+9'  '70'   -> '9999999999930'
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dqsub348 subtract '10000e+9'  '700'   -> '9999999999300'
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dqsub349 subtract '10000e+9'  '7000'   -> '9999999993000'
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dqsub350 subtract '10000e+9'  '70000'   -> '9999999930000'
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dqsub351 subtract '10000e+9'  '700000'   -> '9999999300000'
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dqsub352 subtract '7' '10000e+9'   -> '-9999999999993'
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dqsub353 subtract '70' '10000e+9'   -> '-9999999999930'
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dqsub354 subtract '700' '10000e+9'   -> '-9999999999300'
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dqsub355 subtract '7000' '10000e+9'   -> '-9999999993000'
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dqsub356 subtract '70000' '10000e+9'   -> '-9999999930000'
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dqsub357 subtract '700000' '10000e+9'   -> '-9999999300000'
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-- zero preservation
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dqsub361 subtract 1 '0.0001' -> '0.9999'
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dqsub362 subtract 1 '0.00001' -> '0.99999'
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dqsub363 subtract 1 '0.000001' -> '0.999999'
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dqsub364 subtract 1 '0.0000000000000000000000000000000001' -> '0.9999999999999999999999999999999999'
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dqsub365 subtract 1 '0.00000000000000000000000000000000001' -> '1.000000000000000000000000000000000' Inexact Rounded
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dqsub366 subtract 1 '0.000000000000000000000000000000000001' -> '1.000000000000000000000000000000000' Inexact Rounded
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-- some funny zeros [in case of bad signum]
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dqsub370 subtract 1  0  -> 1
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dqsub371 subtract 1 0.  -> 1
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dqsub372 subtract 1  .0 -> 1.0
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dqsub373 subtract 1 0.0 -> 1.0
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dqsub374 subtract  0  1 -> -1
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dqsub375 subtract 0.  1 -> -1
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dqsub376 subtract  .0 1 -> -1.0
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dqsub377 subtract 0.0 1 -> -1.0
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-- leading 0 digit before round
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dqsub910 subtract -103519362 -51897955.3 -> -51621406.7
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dqsub911 subtract 159579.444 89827.5229 -> 69751.9211
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dqsub920 subtract 333.0000000000000000000000000123456 33.00000000000000000000000001234566 -> 299.9999999999999999999999999999999 Inexact Rounded
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dqsub921 subtract 333.0000000000000000000000000123456 33.00000000000000000000000001234565 -> 300.0000000000000000000000000000000 Inexact Rounded
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dqsub922 subtract 133.0000000000000000000000000123456 33.00000000000000000000000001234565 ->  99.99999999999999999999999999999995
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dqsub923 subtract 133.0000000000000000000000000123456 33.00000000000000000000000001234564 ->  99.99999999999999999999999999999996
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dqsub924 subtract 133.0000000000000000000000000123456 33.00000000000000000000000001234540 -> 100.0000000000000000000000000000002 Rounded
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						|
dqsub925 subtract 133.0000000000000000000000000123456 43.00000000000000000000000001234560 ->  90.00000000000000000000000000000000
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dqsub926 subtract 133.0000000000000000000000000123456 43.00000000000000000000000001234561 ->  89.99999999999999999999999999999999
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dqsub927 subtract 133.0000000000000000000000000123456 43.00000000000000000000000001234566 ->  89.99999999999999999999999999999994
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dqsub928 subtract 101.0000000000000000000000000123456 91.00000000000000000000000001234566 ->   9.99999999999999999999999999999994
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dqsub929 subtract 101.0000000000000000000000000123456 99.00000000000000000000000001234566 ->   1.99999999999999999999999999999994
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-- more LHS swaps [were fixed]
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dqsub390 subtract '-56267E-10'   0 ->  '-0.0000056267'
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dqsub391 subtract '-56267E-6'    0 ->  '-0.056267'
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dqsub392 subtract '-56267E-5'    0 ->  '-0.56267'
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dqsub393 subtract '-56267E-4'    0 ->  '-5.6267'
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dqsub394 subtract '-56267E-3'    0 ->  '-56.267'
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dqsub395 subtract '-56267E-2'    0 ->  '-562.67'
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dqsub396 subtract '-56267E-1'    0 ->  '-5626.7'
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dqsub397 subtract '-56267E-0'    0 ->  '-56267'
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dqsub398 subtract '-5E-10'       0 ->  '-5E-10'
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dqsub399 subtract '-5E-7'        0 ->  '-5E-7'
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dqsub400 subtract '-5E-6'        0 ->  '-0.000005'
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dqsub401 subtract '-5E-5'        0 ->  '-0.00005'
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dqsub402 subtract '-5E-4'        0 ->  '-0.0005'
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dqsub403 subtract '-5E-1'        0 ->  '-0.5'
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dqsub404 subtract '-5E0'         0 ->  '-5'
 | 
						|
dqsub405 subtract '-5E1'         0 ->  '-50'
 | 
						|
dqsub406 subtract '-5E5'         0 ->  '-500000'
 | 
						|
dqsub407 subtract '-5E33'        0 ->  '-5000000000000000000000000000000000'
 | 
						|
dqsub408 subtract '-5E34'        0 ->  '-5.000000000000000000000000000000000E+34'  Rounded
 | 
						|
dqsub409 subtract '-5E35'        0 ->  '-5.000000000000000000000000000000000E+35'  Rounded
 | 
						|
dqsub410 subtract '-5E36'        0 ->  '-5.000000000000000000000000000000000E+36'  Rounded
 | 
						|
dqsub411 subtract '-5E100'       0 ->  '-5.000000000000000000000000000000000E+100' Rounded
 | 
						|
 | 
						|
-- more RHS swaps [were fixed]
 | 
						|
dqsub420 subtract 0  '-56267E-10' ->  '0.0000056267'
 | 
						|
dqsub421 subtract 0  '-56267E-6'  ->  '0.056267'
 | 
						|
dqsub422 subtract 0  '-56267E-5'  ->  '0.56267'
 | 
						|
dqsub423 subtract 0  '-56267E-4'  ->  '5.6267'
 | 
						|
dqsub424 subtract 0  '-56267E-3'  ->  '56.267'
 | 
						|
dqsub425 subtract 0  '-56267E-2'  ->  '562.67'
 | 
						|
dqsub426 subtract 0  '-56267E-1'  ->  '5626.7'
 | 
						|
dqsub427 subtract 0  '-56267E-0'  ->  '56267'
 | 
						|
dqsub428 subtract 0  '-5E-10'     ->  '5E-10'
 | 
						|
dqsub429 subtract 0  '-5E-7'      ->  '5E-7'
 | 
						|
dqsub430 subtract 0  '-5E-6'      ->  '0.000005'
 | 
						|
dqsub431 subtract 0  '-5E-5'      ->  '0.00005'
 | 
						|
dqsub432 subtract 0  '-5E-4'      ->  '0.0005'
 | 
						|
dqsub433 subtract 0  '-5E-1'      ->  '0.5'
 | 
						|
dqsub434 subtract 0  '-5E0'       ->  '5'
 | 
						|
dqsub435 subtract 0  '-5E1'       ->  '50'
 | 
						|
dqsub436 subtract 0  '-5E5'       ->  '500000'
 | 
						|
dqsub437 subtract 0  '-5E33'      ->  '5000000000000000000000000000000000'
 | 
						|
dqsub438 subtract 0  '-5E34'      ->  '5.000000000000000000000000000000000E+34'   Rounded
 | 
						|
dqsub439 subtract 0  '-5E35'      ->  '5.000000000000000000000000000000000E+35'   Rounded
 | 
						|
dqsub440 subtract 0  '-5E36'      ->  '5.000000000000000000000000000000000E+36'   Rounded
 | 
						|
dqsub441 subtract 0  '-5E100'     ->  '5.000000000000000000000000000000000E+100'  Rounded
 | 
						|
 | 
						|
 | 
						|
-- try borderline precision, with carries, etc.
 | 
						|
dqsub461 subtract '1E+16' '1'        -> '9999999999999999'
 | 
						|
dqsub462 subtract '1E+12' '-1.111'   -> '1000000000001.111'
 | 
						|
dqsub463 subtract '1.111'  '-1E+12'  -> '1000000000001.111'
 | 
						|
dqsub464 subtract '-1'    '-1E+16'   -> '9999999999999999'
 | 
						|
dqsub465 subtract '7E+15' '1'        -> '6999999999999999'
 | 
						|
dqsub466 subtract '7E+12' '-1.111'   -> '7000000000001.111'
 | 
						|
dqsub467 subtract '1.111'  '-7E+12'  -> '7000000000001.111'
 | 
						|
dqsub468 subtract '-1'    '-7E+15'   -> '6999999999999999'
 | 
						|
 | 
						|
--                   1234567890123456       1234567890123456      1 23456789012345
 | 
						|
dqsub470 subtract '0.4444444444444444444444444444444444'  '-0.5555555555555555555555555555555563' -> '1.000000000000000000000000000000001' Inexact Rounded
 | 
						|
dqsub471 subtract '0.4444444444444444444444444444444444'  '-0.5555555555555555555555555555555562' -> '1.000000000000000000000000000000001' Inexact Rounded
 | 
						|
dqsub472 subtract '0.4444444444444444444444444444444444'  '-0.5555555555555555555555555555555561' -> '1.000000000000000000000000000000000' Inexact Rounded
 | 
						|
dqsub473 subtract '0.4444444444444444444444444444444444'  '-0.5555555555555555555555555555555560' -> '1.000000000000000000000000000000000' Inexact Rounded
 | 
						|
dqsub474 subtract '0.4444444444444444444444444444444444'  '-0.5555555555555555555555555555555559' -> '1.000000000000000000000000000000000' Inexact Rounded
 | 
						|
dqsub475 subtract '0.4444444444444444444444444444444444'  '-0.5555555555555555555555555555555558' -> '1.000000000000000000000000000000000' Inexact Rounded
 | 
						|
dqsub476 subtract '0.4444444444444444444444444444444444'  '-0.5555555555555555555555555555555557' -> '1.000000000000000000000000000000000' Inexact Rounded
 | 
						|
dqsub477 subtract '0.4444444444444444444444444444444444'  '-0.5555555555555555555555555555555556' -> '1.000000000000000000000000000000000' Rounded
 | 
						|
dqsub478 subtract '0.4444444444444444444444444444444444'  '-0.5555555555555555555555555555555555' -> '0.9999999999999999999999999999999999'
 | 
						|
dqsub479 subtract '0.4444444444444444444444444444444444'  '-0.5555555555555555555555555555555554' -> '0.9999999999999999999999999999999998'
 | 
						|
dqsub480 subtract '0.4444444444444444444444444444444444'  '-0.5555555555555555555555555555555553' -> '0.9999999999999999999999999999999997'
 | 
						|
dqsub481 subtract '0.4444444444444444444444444444444444'  '-0.5555555555555555555555555555555552' -> '0.9999999999999999999999999999999996'
 | 
						|
dqsub482 subtract '0.4444444444444444444444444444444444'  '-0.5555555555555555555555555555555551' -> '0.9999999999999999999999999999999995'
 | 
						|
dqsub483 subtract '0.4444444444444444444444444444444444'  '-0.5555555555555555555555555555555550' -> '0.9999999999999999999999999999999994'
 | 
						|
 | 
						|
-- and some more, including residue effects and different roundings
 | 
						|
rounding: half_up
 | 
						|
dqsub500 subtract '1231234555555555555555555567456789' 0             -> '1231234555555555555555555567456789'
 | 
						|
dqsub501 subtract '1231234555555555555555555567456789' 0.000000001   -> '1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub502 subtract '1231234555555555555555555567456789' 0.000001      -> '1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub503 subtract '1231234555555555555555555567456789' 0.1           -> '1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub504 subtract '1231234555555555555555555567456789' 0.4           -> '1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub505 subtract '1231234555555555555555555567456789' 0.49          -> '1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub506 subtract '1231234555555555555555555567456789' 0.499999      -> '1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub507 subtract '1231234555555555555555555567456789' 0.499999999   -> '1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub508 subtract '1231234555555555555555555567456789' 0.5           -> '1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub509 subtract '1231234555555555555555555567456789' 0.500000001   -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub510 subtract '1231234555555555555555555567456789' 0.500001      -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub511 subtract '1231234555555555555555555567456789' 0.51          -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub512 subtract '1231234555555555555555555567456789' 0.6           -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub513 subtract '1231234555555555555555555567456789' 0.9           -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub514 subtract '1231234555555555555555555567456789' 0.99999       -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub515 subtract '1231234555555555555555555567456789' 0.999999999   -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub516 subtract '1231234555555555555555555567456789' 1             -> '1231234555555555555555555567456788'
 | 
						|
dqsub517 subtract '1231234555555555555555555567456789' 1.000000001   -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub518 subtract '1231234555555555555555555567456789' 1.00001       -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub519 subtract '1231234555555555555555555567456789' 1.1           -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
 | 
						|
rounding: half_even
 | 
						|
dqsub520 subtract '1231234555555555555555555567456789' 0             -> '1231234555555555555555555567456789'
 | 
						|
dqsub521 subtract '1231234555555555555555555567456789' 0.000000001   -> '1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub522 subtract '1231234555555555555555555567456789' 0.000001      -> '1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub523 subtract '1231234555555555555555555567456789' 0.1           -> '1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub524 subtract '1231234555555555555555555567456789' 0.4           -> '1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub525 subtract '1231234555555555555555555567456789' 0.49          -> '1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub526 subtract '1231234555555555555555555567456789' 0.499999      -> '1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub527 subtract '1231234555555555555555555567456789' 0.499999999   -> '1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub528 subtract '1231234555555555555555555567456789' 0.5           -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub529 subtract '1231234555555555555555555567456789' 0.500000001   -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub530 subtract '1231234555555555555555555567456789' 0.500001      -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub531 subtract '1231234555555555555555555567456789' 0.51          -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub532 subtract '1231234555555555555555555567456789' 0.6           -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub533 subtract '1231234555555555555555555567456789' 0.9           -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub534 subtract '1231234555555555555555555567456789' 0.99999       -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub535 subtract '1231234555555555555555555567456789' 0.999999999   -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub536 subtract '1231234555555555555555555567456789' 1             -> '1231234555555555555555555567456788'
 | 
						|
dqsub537 subtract '1231234555555555555555555567456789' 1.00000001    -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub538 subtract '1231234555555555555555555567456789' 1.00001       -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub539 subtract '1231234555555555555555555567456789' 1.1           -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
-- critical few with even bottom digit...
 | 
						|
dqsub540 subtract '1231234555555555555555555567456788' 0.499999999   -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub541 subtract '1231234555555555555555555567456788' 0.5           -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub542 subtract '1231234555555555555555555567456788' 0.500000001   -> '1231234555555555555555555567456787' Inexact Rounded
 | 
						|
 | 
						|
rounding: down
 | 
						|
dqsub550 subtract '1231234555555555555555555567456789' 0             -> '1231234555555555555555555567456789'
 | 
						|
dqsub551 subtract '1231234555555555555555555567456789' 0.000000001   -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub552 subtract '1231234555555555555555555567456789' 0.000001      -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub553 subtract '1231234555555555555555555567456789' 0.1           -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub554 subtract '1231234555555555555555555567456789' 0.4           -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub555 subtract '1231234555555555555555555567456789' 0.49          -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub556 subtract '1231234555555555555555555567456789' 0.499999      -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub557 subtract '1231234555555555555555555567456789' 0.499999999   -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub558 subtract '1231234555555555555555555567456789' 0.5           -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub559 subtract '1231234555555555555555555567456789' 0.500000001   -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub560 subtract '1231234555555555555555555567456789' 0.500001      -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub561 subtract '1231234555555555555555555567456789' 0.51          -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub562 subtract '1231234555555555555555555567456789' 0.6           -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub563 subtract '1231234555555555555555555567456789' 0.9           -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub564 subtract '1231234555555555555555555567456789' 0.99999       -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub565 subtract '1231234555555555555555555567456789' 0.999999999   -> '1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub566 subtract '1231234555555555555555555567456789' 1             -> '1231234555555555555555555567456788'
 | 
						|
dqsub567 subtract '1231234555555555555555555567456789' 1.00000001    -> '1231234555555555555555555567456787' Inexact Rounded
 | 
						|
dqsub568 subtract '1231234555555555555555555567456789' 1.00001       -> '1231234555555555555555555567456787' Inexact Rounded
 | 
						|
dqsub569 subtract '1231234555555555555555555567456789' 1.1           -> '1231234555555555555555555567456787' Inexact Rounded
 | 
						|
 | 
						|
-- symmetry...
 | 
						|
rounding: half_up
 | 
						|
dqsub600 subtract 0             '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789'
 | 
						|
dqsub601 subtract 0.000000001   '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub602 subtract 0.000001      '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub603 subtract 0.1           '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub604 subtract 0.4           '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub605 subtract 0.49          '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub606 subtract 0.499999      '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub607 subtract 0.499999999   '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub608 subtract 0.5           '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub609 subtract 0.500000001   '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub610 subtract 0.500001      '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub611 subtract 0.51          '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub612 subtract 0.6           '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub613 subtract 0.9           '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub614 subtract 0.99999       '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub615 subtract 0.999999999   '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub616 subtract 1             '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788'
 | 
						|
dqsub617 subtract 1.000000001   '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub618 subtract 1.00001       '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub619 subtract 1.1           '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
 | 
						|
rounding: half_even
 | 
						|
dqsub620 subtract 0             '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789'
 | 
						|
dqsub621 subtract 0.000000001   '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub622 subtract 0.000001      '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub623 subtract 0.1           '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub624 subtract 0.4           '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub625 subtract 0.49          '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub626 subtract 0.499999      '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub627 subtract 0.499999999   '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789' Inexact Rounded
 | 
						|
dqsub628 subtract 0.5           '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub629 subtract 0.500000001   '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub630 subtract 0.500001      '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub631 subtract 0.51          '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub632 subtract 0.6           '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub633 subtract 0.9           '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub634 subtract 0.99999       '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub635 subtract 0.999999999   '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub636 subtract 1             '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788'
 | 
						|
dqsub637 subtract 1.00000001    '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub638 subtract 1.00001       '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub639 subtract 1.1           '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
-- critical few with even bottom digit...
 | 
						|
dqsub640 subtract 0.499999999   '1231234555555555555555555567456788' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub641 subtract 0.5           '1231234555555555555555555567456788' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub642 subtract 0.500000001   '1231234555555555555555555567456788' -> '-1231234555555555555555555567456787' Inexact Rounded
 | 
						|
 | 
						|
rounding: down
 | 
						|
dqsub650 subtract 0             '1231234555555555555555555567456789' -> '-1231234555555555555555555567456789'
 | 
						|
dqsub651 subtract 0.000000001   '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub652 subtract 0.000001      '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub653 subtract 0.1           '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub654 subtract 0.4           '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub655 subtract 0.49          '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub656 subtract 0.499999      '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub657 subtract 0.499999999   '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub658 subtract 0.5           '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub659 subtract 0.500000001   '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub660 subtract 0.500001      '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub661 subtract 0.51          '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub662 subtract 0.6           '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub663 subtract 0.9           '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub664 subtract 0.99999       '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub665 subtract 0.999999999   '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788' Inexact Rounded
 | 
						|
dqsub666 subtract 1             '1231234555555555555555555567456789' -> '-1231234555555555555555555567456788'
 | 
						|
dqsub667 subtract 1.00000001    '1231234555555555555555555567456789' -> '-1231234555555555555555555567456787' Inexact Rounded
 | 
						|
dqsub668 subtract 1.00001       '1231234555555555555555555567456789' -> '-1231234555555555555555555567456787' Inexact Rounded
 | 
						|
dqsub669 subtract 1.1           '1231234555555555555555555567456789' -> '-1231234555555555555555555567456787' Inexact Rounded
 | 
						|
 | 
						|
 | 
						|
-- lots of leading zeros in intermediate result, and showing effects of
 | 
						|
-- input rounding would have affected the following
 | 
						|
rounding: half_up
 | 
						|
dqsub670 subtract '1234567456789' '1234567456788.1' -> 0.9
 | 
						|
dqsub671 subtract '1234567456789' '1234567456788.9' -> 0.1
 | 
						|
dqsub672 subtract '1234567456789' '1234567456789.1' -> -0.1
 | 
						|
dqsub673 subtract '1234567456789' '1234567456789.5' -> -0.5
 | 
						|
dqsub674 subtract '1234567456789' '1234567456789.9' -> -0.9
 | 
						|
 | 
						|
rounding: half_even
 | 
						|
dqsub680 subtract '1234567456789' '1234567456788.1' -> 0.9
 | 
						|
dqsub681 subtract '1234567456789' '1234567456788.9' -> 0.1
 | 
						|
dqsub682 subtract '1234567456789' '1234567456789.1' -> -0.1
 | 
						|
dqsub683 subtract '1234567456789' '1234567456789.5' -> -0.5
 | 
						|
dqsub684 subtract '1234567456789' '1234567456789.9' -> -0.9
 | 
						|
 | 
						|
dqsub685 subtract '1234567456788' '1234567456787.1' -> 0.9
 | 
						|
dqsub686 subtract '1234567456788' '1234567456787.9' -> 0.1
 | 
						|
dqsub687 subtract '1234567456788' '1234567456788.1' -> -0.1
 | 
						|
dqsub688 subtract '1234567456788' '1234567456788.5' -> -0.5
 | 
						|
dqsub689 subtract '1234567456788' '1234567456788.9' -> -0.9
 | 
						|
 | 
						|
rounding: down
 | 
						|
dqsub690 subtract '1234567456789' '1234567456788.1' -> 0.9
 | 
						|
dqsub691 subtract '1234567456789' '1234567456788.9' -> 0.1
 | 
						|
dqsub692 subtract '1234567456789' '1234567456789.1' -> -0.1
 | 
						|
dqsub693 subtract '1234567456789' '1234567456789.5' -> -0.5
 | 
						|
dqsub694 subtract '1234567456789' '1234567456789.9' -> -0.9
 | 
						|
 | 
						|
-- Specials
 | 
						|
dqsub780 subtract -Inf   Inf   -> -Infinity
 | 
						|
dqsub781 subtract -Inf   1000  -> -Infinity
 | 
						|
dqsub782 subtract -Inf   1     -> -Infinity
 | 
						|
dqsub783 subtract -Inf  -0     -> -Infinity
 | 
						|
dqsub784 subtract -Inf  -1     -> -Infinity
 | 
						|
dqsub785 subtract -Inf  -1000  -> -Infinity
 | 
						|
dqsub787 subtract -1000  Inf   -> -Infinity
 | 
						|
dqsub788 subtract -Inf   Inf   -> -Infinity
 | 
						|
dqsub789 subtract -1     Inf   -> -Infinity
 | 
						|
dqsub790 subtract  0     Inf   -> -Infinity
 | 
						|
dqsub791 subtract  1     Inf   -> -Infinity
 | 
						|
dqsub792 subtract  1000  Inf   -> -Infinity
 | 
						|
 | 
						|
dqsub800 subtract  Inf   Inf   ->  NaN  Invalid_operation
 | 
						|
dqsub801 subtract  Inf   1000  ->  Infinity
 | 
						|
dqsub802 subtract  Inf   1     ->  Infinity
 | 
						|
dqsub803 subtract  Inf   0     ->  Infinity
 | 
						|
dqsub804 subtract  Inf  -0     ->  Infinity
 | 
						|
dqsub805 subtract  Inf  -1     ->  Infinity
 | 
						|
dqsub806 subtract  Inf  -1000  ->  Infinity
 | 
						|
dqsub807 subtract  Inf  -Inf   ->  Infinity
 | 
						|
dqsub808 subtract -1000 -Inf   ->  Infinity
 | 
						|
dqsub809 subtract -Inf  -Inf   ->  NaN  Invalid_operation
 | 
						|
dqsub810 subtract -1    -Inf   ->  Infinity
 | 
						|
dqsub811 subtract -0    -Inf   ->  Infinity
 | 
						|
dqsub812 subtract  0    -Inf   ->  Infinity
 | 
						|
dqsub813 subtract  1    -Inf   ->  Infinity
 | 
						|
dqsub814 subtract  1000 -Inf   ->  Infinity
 | 
						|
dqsub815 subtract  Inf  -Inf   ->  Infinity
 | 
						|
 | 
						|
dqsub821 subtract  NaN   Inf   ->  NaN
 | 
						|
dqsub822 subtract -NaN   1000  -> -NaN
 | 
						|
dqsub823 subtract  NaN   1     ->  NaN
 | 
						|
dqsub824 subtract  NaN   0     ->  NaN
 | 
						|
dqsub825 subtract  NaN  -0     ->  NaN
 | 
						|
dqsub826 subtract  NaN  -1     ->  NaN
 | 
						|
dqsub827 subtract  NaN  -1000  ->  NaN
 | 
						|
dqsub828 subtract  NaN  -Inf   ->  NaN
 | 
						|
dqsub829 subtract -NaN   NaN   -> -NaN
 | 
						|
dqsub830 subtract -Inf   NaN   ->  NaN
 | 
						|
dqsub831 subtract -1000  NaN   ->  NaN
 | 
						|
dqsub832 subtract -1     NaN   ->  NaN
 | 
						|
dqsub833 subtract -0     NaN   ->  NaN
 | 
						|
dqsub834 subtract  0     NaN   ->  NaN
 | 
						|
dqsub835 subtract  1     NaN   ->  NaN
 | 
						|
dqsub836 subtract  1000 -NaN   -> -NaN
 | 
						|
dqsub837 subtract  Inf   NaN   ->  NaN
 | 
						|
 | 
						|
dqsub841 subtract  sNaN  Inf   ->  NaN  Invalid_operation
 | 
						|
dqsub842 subtract -sNaN  1000  -> -NaN  Invalid_operation
 | 
						|
dqsub843 subtract  sNaN  1     ->  NaN  Invalid_operation
 | 
						|
dqsub844 subtract  sNaN  0     ->  NaN  Invalid_operation
 | 
						|
dqsub845 subtract  sNaN -0     ->  NaN  Invalid_operation
 | 
						|
dqsub846 subtract  sNaN -1     ->  NaN  Invalid_operation
 | 
						|
dqsub847 subtract  sNaN -1000  ->  NaN  Invalid_operation
 | 
						|
dqsub848 subtract  sNaN  NaN   ->  NaN  Invalid_operation
 | 
						|
dqsub849 subtract  sNaN sNaN   ->  NaN  Invalid_operation
 | 
						|
dqsub850 subtract  NaN  sNaN   ->  NaN  Invalid_operation
 | 
						|
dqsub851 subtract -Inf -sNaN   -> -NaN  Invalid_operation
 | 
						|
dqsub852 subtract -1000 sNaN   ->  NaN  Invalid_operation
 | 
						|
dqsub853 subtract -1    sNaN   ->  NaN  Invalid_operation
 | 
						|
dqsub854 subtract -0    sNaN   ->  NaN  Invalid_operation
 | 
						|
dqsub855 subtract  0    sNaN   ->  NaN  Invalid_operation
 | 
						|
dqsub856 subtract  1    sNaN   ->  NaN  Invalid_operation
 | 
						|
dqsub857 subtract  1000 sNaN   ->  NaN  Invalid_operation
 | 
						|
dqsub858 subtract  Inf  sNaN   ->  NaN  Invalid_operation
 | 
						|
dqsub859 subtract  NaN  sNaN   ->  NaN  Invalid_operation
 | 
						|
 | 
						|
-- propagating NaNs
 | 
						|
dqsub861 subtract  NaN01   -Inf     ->  NaN1
 | 
						|
dqsub862 subtract -NaN02   -1000    -> -NaN2
 | 
						|
dqsub863 subtract  NaN03    1000    ->  NaN3
 | 
						|
dqsub864 subtract  NaN04    Inf     ->  NaN4
 | 
						|
dqsub865 subtract  NaN05    NaN61   ->  NaN5
 | 
						|
dqsub866 subtract -Inf     -NaN71   -> -NaN71
 | 
						|
dqsub867 subtract -1000     NaN81   ->  NaN81
 | 
						|
dqsub868 subtract  1000     NaN91   ->  NaN91
 | 
						|
dqsub869 subtract  Inf      NaN101  ->  NaN101
 | 
						|
dqsub871 subtract  sNaN011  -Inf    ->  NaN11  Invalid_operation
 | 
						|
dqsub872 subtract  sNaN012  -1000   ->  NaN12  Invalid_operation
 | 
						|
dqsub873 subtract -sNaN013   1000   -> -NaN13  Invalid_operation
 | 
						|
dqsub874 subtract  sNaN014   NaN171 ->  NaN14  Invalid_operation
 | 
						|
dqsub875 subtract  sNaN015  sNaN181 ->  NaN15  Invalid_operation
 | 
						|
dqsub876 subtract  NaN016   sNaN191 ->  NaN191 Invalid_operation
 | 
						|
dqsub877 subtract -Inf      sNaN201 ->  NaN201 Invalid_operation
 | 
						|
dqsub878 subtract -1000     sNaN211 ->  NaN211 Invalid_operation
 | 
						|
dqsub879 subtract  1000    -sNaN221 -> -NaN221 Invalid_operation
 | 
						|
dqsub880 subtract  Inf      sNaN231 ->  NaN231 Invalid_operation
 | 
						|
dqsub881 subtract  NaN025   sNaN241 ->  NaN241 Invalid_operation
 | 
						|
 | 
						|
-- edge case spills
 | 
						|
dqsub901 subtract  2.E-3  1.002  -> -1.000
 | 
						|
dqsub902 subtract  2.0E-3  1.002  -> -1.0000
 | 
						|
dqsub903 subtract  2.00E-3  1.0020  -> -1.00000
 | 
						|
dqsub904 subtract  2.000E-3  1.00200  -> -1.000000
 | 
						|
dqsub905 subtract  2.0000E-3  1.002000  -> -1.0000000
 | 
						|
dqsub906 subtract  2.00000E-3  1.0020000  -> -1.00000000
 | 
						|
dqsub907 subtract  2.000000E-3  1.00200000  -> -1.000000000
 | 
						|
dqsub908 subtract  2.0000000E-3  1.002000000  -> -1.0000000000
 | 
						|
 | 
						|
-- subnormals and overflows covered under Add
 | 
						|
 | 
						|
-- Examples from SQL proposal (Krishna Kulkarni)
 | 
						|
dqsub1125  subtract 130E-2  120E-2 -> 0.10
 | 
						|
dqsub1126  subtract 130E-2  12E-1  -> 0.10
 | 
						|
dqsub1127  subtract 130E-2  1E0    -> 0.30
 | 
						|
dqsub1128  subtract 1E2     1E4    -> -9.9E+3
 | 
						|
 | 
						|
-- Null tests
 | 
						|
dqsub9990 subtract 10  # -> NaN Invalid_operation
 | 
						|
dqsub9991 subtract  # 10 -> NaN Invalid_operation
 |