diff options
author | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2019-03-28 14:22:29 +0000 |
---|---|---|
committer | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2019-03-28 14:22:29 +0000 |
commit | a28aa80c739a1d169649a4da833ef48cfb3465b3 (patch) | |
tree | c2f6bb79c268bd60116b54319ea96f01bb7dda79 /spec/ruby/core/float/to_s_spec.rb | |
parent | 0f64776745ef31e626dec0d42b7fb2a5988397ec (diff) |
Update to ruby/spec@e81b3cd
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67361 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'spec/ruby/core/float/to_s_spec.rb')
-rw-r--r-- | spec/ruby/core/float/to_s_spec.rb | 199 |
1 files changed, 197 insertions, 2 deletions
diff --git a/spec/ruby/core/float/to_s_spec.rb b/spec/ruby/core/float/to_s_spec.rb index 58a58549ed..127132b567 100644 --- a/spec/ruby/core/float/to_s_spec.rb +++ b/spec/ruby/core/float/to_s_spec.rb @@ -75,11 +75,11 @@ describe "Float#to_s" do -10000000000000000.0.to_s.should == "-1.0e+16" end - it "uses non-e format for a positive value with whole part having 17 significant figures" do + it "uses e format for a positive value with whole part having 17 significant figures" do 1000000000000000.0.to_s.should == "1.0e+15" end - it "uses non-e format for a negative value with whole part having 17 significant figures" do + it "uses e format for a negative value with whole part having 17 significant figures" do -1000000000000000.0.to_s.should == "-1.0e+15" end @@ -95,6 +95,201 @@ describe "Float#to_s" do it "outputs the minimal, unique form to represent the value" do 0.56.to_s.should == "0.56" end + + describe "matches" do + ruby_version_is "2.4" do # For unpack1 + it "random examples in all ranges" do + # 50.times do + # bytes = (0...8).map { rand(256) } + # string = bytes.pack('C8') + # float = string.unpack('D').first + # puts " #{bytes.pack('C8').inspect}.unpack1('D').to_s.should == #{float.to_s.inspect}" + # end + + "\x97\x15\xC1| \xF5\x19\xAD".unpack1('D').to_s.should == "-1.9910613439044092e-91" + "\xBF\xF0\x14\xAD\xDF\x17q\xD1".unpack1('D').to_s.should == "-2.075408637901046e+84" + "\xDF\xBD\xC0\x89\xDA\x1F&$".unpack1('D').to_s.should == "1.5219626883645564e-134" + "|0<?a\xFB\xBFG".unpack1('D').to_s.should == "4.251130678455814e+37" + "U\xEE*\xB7\xF1\xB8\xE7\x18".unpack1('D').to_s.should == "1.0648588700899858e-188" + "\x15Y\xD1J\x80/7\xD0".unpack1('D').to_s.should == "-2.6847034291392176e+78" + "\x1D\x1E\xD2\x9A3)\xF5q".unpack1('D').to_s.should == "8.818842365424256e+240" + "M\xD0C\xA3\x19-\xE3\xE5".unpack1('D').to_s.should == "-6.365746090981858e+182" + "\xAFf\xFE\xF0$\x85\x01L".unpack1('D').to_s.should == "1.374692728674642e+58" + "'N\xB7\x12\xE0\xC8t\t".unpack1('D').to_s.should == "4.1254080603298014e-263" + "\xAFn\xF2x\x85\xB5\x15j".unpack1('D').to_s.should == "1.0635019031720867e+203" + "nQ\x95\xFA\xD9\xE3\xC5)".unpack1('D').to_s.should == "1.8641386367625094e-107" + "\xC2\x9A\xB1|/\xCAJM".unpack1('D').to_s.should == "2.204135837758401e+64" + "q n\xD8\x86\xF2\xA8D".unpack1('D').to_s.should == "5.890531214599543e+22" + "dmR\xC6\xB3\xF3\x95G".unpack1('D').to_s.should == "7.294790578028111e+36" + "6I\x0E)?E\xB5\xE1".unpack1('D').to_s.should == "-4.7847061687992665e+162" + "\xCD\xE0\xBBy\x9F\xD8\xE89".unpack1('D').to_s.should == "9.800091365433584e-30" + "\xB8\x98TN\x98\xEE\xC1\xF9".unpack1('D').to_s.should == "-3.178740061599073e+278" + "\x8F_\xFF\x15\x1F2\x17B".unpack1('D').to_s.should == "24906286463.84332" + "\x94\x18V\xC5&\xE6\xEAi".unpack1('D').to_s.should == "1.6471900588998988e+202" + "\xECq\xB1\x01\ai\xBD,".unpack1('D').to_s.should == "3.5248469410018065e-93" + "\x9C\xC6\x13pG\xDAx\x9A".unpack1('D').to_s.should == "-3.743306318201459e-181" + "\xEA7,gJ\xEE\x8E*".unpack1('D').to_s.should == "1.0789044330549825e-103" + "1\xD3\xF5K\x8D\xEF\xA7\r".unpack1('D').to_s.should == "7.011009309284311e-243" + "o\xB3\x02\xAF\x9D\xFC\r\xF6".unpack1('D').to_s.should == "-4.610585875652112e+260" + "&:x\x15\xFC3P\x01".unpack1('D').to_s.should == "2.362770515774595e-302" + "\xE6<C\xB8\x90\xF2\xCF\x90".unpack1('D').to_s.should == "-1.0535871178808475e-227" + "\x9Al\aB6's}".unpack1('D').to_s.should == "1.957205609213647e+296" + "+\v\x16\xFD\x19\x0E\x9B\x06".unpack1('D').to_s.should == "7.631200870990123e-277" + "\xEC\xF8~\xDA\xE7Tf\x92".unpack1('D').to_s.should == "-4.942358450191624e-220" + "\xE0\xA0\xC9\x906\xBDcI".unpack1('D').to_s.should == "3.521575588133954e+45" + "\xBD\xFD\xC9\xFD\rp\x02\x0F".unpack1('D').to_s.should == "2.2651682962118346e-236" + "\xE9\xA8\xAD\xC4\xF6u\xF7\x19".unpack1('D').to_s.should == "1.3803378872547194e-183" + "\"f\xED9\x17\xF0\xF1!".unpack1('D').to_s.should == "3.591307506787987e-145" + "\xE6\xF2\xB6\x9CFl\xB3O".unpack1('D').to_s.should == "8.785250953340842e+75" + "g\xFD\xEA\r~x\xBA\x9D".unpack1('D').to_s.should == "-1.7955908504285607e-165" + "\xE2\x84J\xC7\x00\n/\x06".unpack1('D').to_s.should == "6.839790344291208e-279" + "s\xFB\xA58x\xF1\xA9\xD9".unpack1('D').to_s.should == "-8.574967051032431e+123" + "\xE2\x9D\xBE\xE2\x10k{\xFC".unpack1('D').to_s.should == "-4.2751876153404507e+291" + "!z \xB4i4\x8C5".unpack1('D').to_s.should == "9.423078517655126e-51" + "!_\xEAp- 7R".unpack1('D').to_s.should == "1.1500944673871687e+88" + "\x03\xAD=\\\xCB >\xBB".unpack1('D').to_s.should == "-2.4921382721208654e-23" + "\x94\x01\xB1\x87\x10\x9B#\x88".unpack1('D').to_s.should == "-1.8555672851958583e-269" + "\x90H\xFF\\S\x01)\x89".unpack1('D').to_s.should == "-1.5509713490195968e-264" + "HW@\x13\x85&=)".unpack1('D').to_s.should == "4.848496966571536e-110" + "\x14\xDB\\\x10\x93\x9C\xD66".unpack1('D').to_s.should == "1.5842813502410472e-44" + "\x9D8p>\xFF\x9B[\xF3".unpack1('D').to_s.should == "-4.826061446912647e+247" + "c\x9D}\t]\xF9pg".unpack1('D').to_s.should == "1.8907034486212682e+190" + "\xA51\xC9WJ\xB5a^".unpack1('D').to_s.should == "4.422435231445608e+146" + "\x8BL\x90\xCB\xEARf\f".unpack1('D').to_s.should == "6.235963569982745e-249" + end + + it "random examples in human ranges" do + # 50.times do + # formatted = '' + # rand(1..3).times do + # formatted << rand(10).to_s + # end + # formatted << '.' + # rand(1..9).times do + # formatted << rand(10).to_s + # end + # float = formatted.to_f + # string = [float].pack('D') + # puts " #{string.inspect}.unpack1('D').to_s.should == #{float.to_s.inspect}" + # end + + ";\x01M\x84\r\xF7M@".unpack1('D').to_s.should == "59.9301" + "\xAE\xD3HKe|\x8A@".unpack1('D').to_s.should == "847.54946" + "/\xDD$\x06\x81u8@".unpack1('D').to_s.should == "24.459" + "E\xD8\xF0\xF4JY\xF0?".unpack1('D').to_s.should == "1.0218" + "[\brP\xC2\xCC\x05@".unpack1('D').to_s.should == "2.72498" + "\xE6w\x9A\xCCx\xF6T@".unpack1('D').to_s.should == "83.851123" + "\xB4\xD4&\xC0C\xFD.@".unpack1('D').to_s.should == "15.494657521" + "\xCD\xCC\xCC\xCC\xCCLM@".unpack1('D').to_s.should == "58.6" + "\xA1\x84\x99\xB6\x7F\xE5\x13@".unpack1('D').to_s.should == "4.97412" + "\xD7\xA3p=\n\x9C\x80@".unpack1('D').to_s.should == "531.505" + "S\x96!\x8E\xF5\x0E\x8F@".unpack1('D').to_s.should == "993.8699" + "\xF1F\xE6\x91?\x18\xD7?".unpack1('D').to_s.should == "0.360855" + "=\n\xD7\xA3p=\x15@".unpack1('D').to_s.should == "5.31" + "\x90Ci\x147\xC74@".unpack1('D').to_s.should == "20.7781842" + "A\ft\xED\v\xE8\xB9?".unpack1('D').to_s.should == "0.101197" + "\x9A\x99\x99\x99\x999T@".unpack1('D').to_s.should == "80.9" + "\x00\x00\x00\x00\x00\x00\x1A@".unpack1('D').to_s.should == "6.5" + "\xD3J\xC6\xD6\x98\x8Es@".unpack1('D').to_s.should == "312.9123142" + "SQ\xE5I\fQ\x1E@".unpack1('D').to_s.should == "7.57914844" + "k]Q\xE7\xDDb\x1E@".unpack1('D').to_s.should == "7.59654962" + "\x1F\x85\xEBQ\xB8\xEAz@".unpack1('D').to_s.should == "430.67" + "\x00\x00\x00\x00\x00\x00\x14@".unpack1('D').to_s.should == "5.0" + "{\x14\xAEG\xE1\n}@".unpack1('D').to_s.should == "464.68" + "\x12\x83\xC0\xCA\xA1=V@".unpack1('D').to_s.should == "88.963" + "\x9Aw\x9C\xA2#y\e@".unpack1('D').to_s.should == "6.8683" + "(\x0F\v\xB5\xA6y\xFB?".unpack1('D').to_s.should == "1.7172" + "\xD5x\xE9&1H!@".unpack1('D').to_s.should == "8.641" + "w'Deh\x1Ab@".unpack1('D').to_s.should == "144.8252436" + ":X\xFF\xE70_\x04@".unpack1('D').to_s.should == "2.54648" + "E4\xB2\x12\x90\xCA\x1E@".unpack1('D').to_s.should == "7.69781522" + "fffff\xAA\x80@".unpack1('D').to_s.should == "533.3" + "\xCD\x92\x005\xB5p:@".unpack1('D').to_s.should == "26.440265" + "\xBE\x1D<nS\x7F\x19@".unpack1('D').to_s.should == "6.3743417" + "R\xB8\x1E\x85\xEBYb@".unpack1('D').to_s.should == "146.81" + "\x02\x87\xAB^\xD9\xC0\xF4?".unpack1('D').to_s.should == "1.2970823" + "\x00\x00\x00\x00\x00\x00\"@".unpack1('D').to_s.should == "9.0" + "Zd;\xDFO3\x84@".unpack1('D').to_s.should == "646.414" + "\x9A\x99\x99\x99\x99\x99\t@".unpack1('D').to_s.should == "3.2" + "\xCD#\x7F0\xF0\xE5i@".unpack1('D').to_s.should == "207.18557" + "\xBE\x9F\x1A/\xDD$\xF2?".unpack1('D').to_s.should == "1.134" + "\xEE|?5^\xBA\xF3?".unpack1('D').to_s.should == "1.233" + "\xB4\xB7\xFE\xD7\x05\x03i@".unpack1('D').to_s.should == "200.094463346" + "N\x95\xD6|\xE8HG@".unpack1('D').to_s.should == "46.56959496" + "Y\x868\xD6\xC5-!@".unpack1('D').to_s.should == "8.5894" + "myE\xED\a;\x12@".unpack1('D').to_s.should == "4.557647426" + "\xA7s\xEAo\xAE\x96B@".unpack1('D').to_s.should == "37.1771984" + "\x14\x7Fo.\x99\x11|@".unpack1('D').to_s.should == "449.0998978" + "\xB2\x9EZ}u\x89;@".unpack1('D').to_s.should == "27.536949" + "\xD7\xA3p=\nwY@".unpack1('D').to_s.should == "101.86" + "\xF3\xE6p\xAD\xF6\xC3x@".unpack1('D').to_s.should == "396.247724" + end + end + + it "random values from divisions" do + (1.0 / 7).to_s.should == "0.14285714285714285" + + # 50.times do + # a = rand(10) + # b = rand(10) + # c = rand(10) + # d = rand(10) + # expression = "#{a}.#{b} / #{c}.#{d}" + # puts " (#{expression}).to_s.should == #{eval(expression).to_s.inspect}" + # end + + (1.1 / 7.1).to_s.should == "0.15492957746478875" + (6.5 / 8.8).to_s.should == "0.7386363636363635" + (4.8 / 4.3).to_s.should == "1.1162790697674418" + (4.0 / 1.9).to_s.should == "2.1052631578947367" + (9.1 / 0.8).to_s.should == "11.374999999999998" + (5.3 / 7.5).to_s.should == "0.7066666666666667" + (2.8 / 1.8).to_s.should == "1.5555555555555554" + (2.1 / 2.5).to_s.should == "0.8400000000000001" + (3.5 / 6.0).to_s.should == "0.5833333333333334" + (4.6 / 0.3).to_s.should == "15.333333333333332" + (0.6 / 2.4).to_s.should == "0.25" + (1.3 / 9.1).to_s.should == "0.14285714285714288" + (0.3 / 5.0).to_s.should == "0.06" + (5.0 / 4.2).to_s.should == "1.1904761904761905" + (3.0 / 2.0).to_s.should == "1.5" + (6.3 / 2.0).to_s.should == "3.15" + (5.4 / 6.0).to_s.should == "0.9" + (9.6 / 8.1).to_s.should == "1.1851851851851851" + (8.7 / 1.6).to_s.should == "5.437499999999999" + (1.9 / 7.8).to_s.should == "0.24358974358974358" + (0.5 / 2.1).to_s.should == "0.23809523809523808" + (9.3 / 5.8).to_s.should == "1.6034482758620692" + (2.7 / 8.0).to_s.should == "0.3375" + (9.7 / 7.8).to_s.should == "1.2435897435897436" + (8.1 / 2.4).to_s.should == "3.375" + (7.7 / 2.7).to_s.should == "2.8518518518518516" + (7.9 / 1.7).to_s.should == "4.647058823529412" + (6.5 / 8.2).to_s.should == "0.7926829268292683" + (7.8 / 9.6).to_s.should == "0.8125" + (2.2 / 4.6).to_s.should == "0.47826086956521746" + (0.0 / 1.0).to_s.should == "0.0" + (8.3 / 2.9).to_s.should == "2.8620689655172415" + (3.1 / 6.1).to_s.should == "0.5081967213114754" + (2.8 / 7.8).to_s.should == "0.358974358974359" + (8.0 / 0.1).to_s.should == "80.0" + (1.7 / 6.4).to_s.should == "0.265625" + (1.8 / 5.4).to_s.should == "0.3333333333333333" + (8.0 / 5.8).to_s.should == "1.3793103448275863" + (5.2 / 4.1).to_s.should == "1.2682926829268295" + (9.8 / 5.8).to_s.should == "1.6896551724137934" + (5.4 / 9.5).to_s.should == "0.5684210526315789" + (8.4 / 4.9).to_s.should == "1.7142857142857142" + (1.7 / 3.5).to_s.should == "0.4857142857142857" + (1.2 / 5.1).to_s.should == "0.23529411764705882" + (1.4 / 2.0).to_s.should == "0.7" + (4.8 / 8.0).to_s.should == "0.6" + (9.0 / 2.5).to_s.should == "3.6" + (0.2 / 0.6).to_s.should == "0.33333333333333337" + (7.8 / 5.2).to_s.should == "1.5" + (9.5 / 5.5).to_s.should == "1.7272727272727273" + end + end end with_feature :encoding do |