Mercurial > cpython-lru_cache-weakref

annotate Lib/test/decimaltestdata/ddReduce.decTest @ 54294:dba767bc3155 legacy-trunk

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remove mention of old ctypes version
author Benjamin Peterson <benjamin@python.org>
date Sat, 23 May 2009 20:59:09 +0000
parents b3901c5660f7
children 670caa9775f6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 ------------------------------------------------------------------------
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2 -- ddReduce.decTest -- remove trailing zeros from a decDouble --
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3 -- Copyright (c) IBM Corporation, 2003, 2008. All rights reserved. --
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4 ------------------------------------------------------------------------
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5 -- Please see the document "General Decimal Arithmetic Testcases" --
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6 -- at http://www2.hursley.ibm.com/decimal for the description of --
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7 -- these testcases. --
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8 -- --
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9 -- These testcases are experimental ('beta' versions), and they --
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10 -- may contain errors. They are offered on an as-is basis. In --
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11 -- particular, achieving the same results as the tests here is not --
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12 -- a guarantee that an implementation complies with any Standard --
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13 -- or specification. The tests are not exhaustive. --
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14 -- --
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15 -- Please send comments, suggestions, and corrections to the author: --
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16 -- Mike Cowlishaw, IBM Fellow --
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17 -- IBM UK, PO Box 31, Birmingham Road, Warwick CV34 5JL, UK --
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18 -- mfc@uk.ibm.com --
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19 ------------------------------------------------------------------------
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20 version: 2.58
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22 precision: 16
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23 maxExponent: 384
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24 minExponent: -383
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27 rounding: half_even
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81 -- some trailing fractional zeros with zeros in units
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95 -- some insignificant trailing zeros with positive exponent
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111 -- some significant trailing zeros, were we to be trimming
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112 ddred100 reduce 11 -> 11
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113 ddred101 reduce 10 -> 1E+1
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114 ddred102 reduce 10. -> 1E+1
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115 ddred103 reduce 1.1E+1 -> 11
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116 ddred104 reduce 1.0E+1 -> 1E+1
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117 ddred105 reduce 1.10E+2 -> 1.1E+2
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118 ddred106 reduce 1.00E+2 -> 1E+2
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119 ddred107 reduce 1.100E+3 -> 1.1E+3
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120 ddred108 reduce 1.000E+3 -> 1E+3
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121 ddred109 reduce 1.000000E+6 -> 1E+6
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122 ddred110 reduce -11 -> -11
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123 ddred111 reduce -10 -> -1E+1
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124 ddred112 reduce -10. -> -1E+1
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125 ddred113 reduce -1.1E+1 -> -11
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126 ddred114 reduce -1.0E+1 -> -1E+1
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127 ddred115 reduce -1.10E+2 -> -1.1E+2
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128 ddred116 reduce -1.00E+2 -> -1E+2
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129 ddred117 reduce -1.100E+3 -> -1.1E+3
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130 ddred118 reduce -1.000E+3 -> -1E+3
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131 ddred119 reduce -1.00000E+5 -> -1E+5
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132 ddred120 reduce -1.000000E+6 -> -1E+6
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133 ddred121 reduce -10.00000E+6 -> -1E+7
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134 ddred122 reduce -100.0000E+6 -> -1E+8
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135 ddred123 reduce -1000.000E+6 -> -1E+9
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136 ddred124 reduce -10000.00E+6 -> -1E+10
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137 ddred125 reduce -100000.0E+6 -> -1E+11
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138 ddred126 reduce -1000000.E+6 -> -1E+12
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139
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140 -- examples from decArith
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141 ddred140 reduce '2.1' -> '2.1'
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142 ddred141 reduce '-2.0' -> '-2'
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143 ddred142 reduce '1.200' -> '1.2'
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144 ddred143 reduce '-120' -> '-1.2E+2'
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145 ddred144 reduce '120.00' -> '1.2E+2'
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146 ddred145 reduce '0.00' -> '0'
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147
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148 -- Nmax, Nmin, Ntiny
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149 -- note origami effect on some of these
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150 ddred151 reduce 9.999999999999999E+384 -> 9.999999999999999E+384
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151 ddred152 reduce 9.999999000000000E+380 -> 9.99999900000E+380
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152 ddred153 reduce 9.999999999990000E+384 -> 9.999999999990000E+384
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153 ddred154 reduce 1E-383 -> 1E-383
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154 ddred155 reduce 1.000000000000000E-383 -> 1E-383
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155 ddred156 reduce 2.000E-395 -> 2E-395 Subnormal
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156 ddred157 reduce 1E-398 -> 1E-398 Subnormal
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157
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158 ddred161 reduce -1E-398 -> -1E-398 Subnormal
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159 ddred162 reduce -2.000E-395 -> -2E-395 Subnormal
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160 ddred163 reduce -1.000000000000000E-383 -> -1E-383
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161 ddred164 reduce -1E-383 -> -1E-383
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162 ddred165 reduce -9.999999000000000E+380 -> -9.99999900000E+380
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163 ddred166 reduce -9.999999999990000E+384 -> -9.999999999990000E+384
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164 ddred167 reduce -9.999999999999990E+384 -> -9.999999999999990E+384
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165 ddred168 reduce -9.999999999999999E+384 -> -9.999999999999999E+384
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166 ddred169 reduce -9.999999999999990E+384 -> -9.999999999999990E+384
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167
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168
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169 -- specials (reduce does not affect payload)
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170 ddred820 reduce 'Inf' -> 'Infinity'
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171 ddred821 reduce '-Inf' -> '-Infinity'
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172 ddred822 reduce NaN -> NaN
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173 ddred823 reduce sNaN -> NaN Invalid_operation
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174 ddred824 reduce NaN101 -> NaN101
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175 ddred825 reduce sNaN010 -> NaN10 Invalid_operation
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176 ddred827 reduce -NaN -> -NaN
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177 ddred828 reduce -sNaN -> -NaN Invalid_operation
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178 ddred829 reduce -NaN101 -> -NaN101
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179 ddred830 reduce -sNaN010 -> -NaN10 Invalid_operation
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180
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181 -- Null test
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182 ddred900 reduce # -> NaN Invalid_operation