From c71c59feeb8edd975cc49c718dec8319e22ee2a4 Mon Sep 17 00:00:00 2001
From: eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 1 Apr 2019 20:35:10 +0000
Subject: [PATCH] Fix Float#to_s specs to not depend on the platform
 representation of doubles

* AIX, Solaris, etc have a different binary representation.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67401 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 spec/ruby/core/float/to_s_spec.rb | 245 +++++++++++++++---------------
 1 file changed, 121 insertions(+), 124 deletions(-)

diff --git a/spec/ruby/core/float/to_s_spec.rb b/spec/ruby/core/float/to_s_spec.rb
index 127132b567..db375bfc0e 100644
--- a/spec/ruby/core/float/to_s_spec.rb
+++ b/spec/ruby/core/float/to_s_spec.rb
@@ -97,133 +97,130 @@ describe "Float#to_s" do
   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
+    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 "#{'%.20g' % float}.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
+      2.5540217314354050325e+163.to_s.should == "2.554021731435405e+163"
+      2.5492588360356597544e-172.to_s.should == "2.5492588360356598e-172"
+      1.742770260934704852e-82.to_s.should == "1.7427702609347049e-82"
+      6.2108093676180883209e-104.to_s.should == "6.210809367618088e-104"
+      -3.3448803488331067402e-143.to_s.should == "-3.3448803488331067e-143"
+      -2.2740074343500832557e-168.to_s.should == "-2.2740074343500833e-168"
+      7.0587971678048535732e+191.to_s.should == "7.058797167804854e+191"
+      -284438.88327586348169.to_s.should == "-284438.8832758635"
+      3.953272468476091301e+105.to_s.should == "3.9532724684760913e+105"
+      -3.6361359552959847853e+100.to_s.should == "-3.636135955295985e+100"
+      -1.3222325865575206185e-31.to_s.should == "-1.3222325865575206e-31"
+      1.1440138916932761366e+130.to_s.should == "1.1440138916932761e+130"
+      4.8750891560387561157e-286.to_s.should == "4.875089156038756e-286"
+      5.6101113356591453525e-257.to_s.should == "5.610111335659145e-257"
+      -3.829644279545809575e-100.to_s.should == "-3.8296442795458096e-100"
+      1.5342839401396406117e-194.to_s.should == "1.5342839401396406e-194"
+      2.2284972755169921402e-144.to_s.should == "2.228497275516992e-144"
+      2.1825655917065601737e-61.to_s.should == "2.1825655917065602e-61"
+      -2.6672271363524338322e-62.to_s.should == "-2.667227136352434e-62"
+      -1.9257995160119059415e+21.to_s.should == "-1.925799516011906e+21"
+      -8.9096732962887121718e-198.to_s.should == "-8.909673296288712e-198"
+      2.0202075376548644959e-90.to_s.should == "2.0202075376548645e-90"
+      -7.7341602581786258961e-266.to_s.should == "-7.734160258178626e-266"
+      3.5134482598733635046e+98.to_s.should == "3.5134482598733635e+98"
+      -2.124411722371029134e+154.to_s.should == "-2.124411722371029e+154"
+      -4.573908787355718687e+110.to_s.should == "-4.573908787355719e+110"
+      -1.9344425934170969879e-232.to_s.should == "-1.934442593417097e-232"
+      -1.3274227399979271095e+171.to_s.should == "-1.3274227399979271e+171"
+      9.3495270482104442383e-283.to_s.should == "9.349527048210444e-283"
+      -4.2046059371986483233e+307.to_s.should == "-4.2046059371986483e+307"
+      3.6133547278583543004e-117.to_s.should == "3.613354727858354e-117"
+      4.9247416523566613499e-08.to_s.should == "4.9247416523566613e-08"
+      1.6936145488250064007e-71.to_s.should == "1.6936145488250064e-71"
+      2.4455483206829433098e+96.to_s.should == "2.4455483206829433e+96"
+      7.9797449851436455384e+124.to_s.should == "7.979744985143646e+124"
+      -1.3873689634457876774e-129.to_s.should == "-1.3873689634457877e-129"
+      3.9761102037533483075e+284.to_s.should == "3.976110203753348e+284"
+      -4.2819791952139402486e-303.to_s.should == "-4.28197919521394e-303"
+      -5.7981017546689831298e-116.to_s.should == "-5.798101754668983e-116"
+      -3.953266497860534199e-28.to_s.should == "-3.953266497860534e-28"
+      -2.0659852720290440959e-243.to_s.should == "-2.065985272029044e-243"
+      8.9670488995878688018e-05.to_s.should == "8.967048899587869e-05"
+      -1.2317943708113061768e-98.to_s.should == "-1.2317943708113062e-98"
+      -3.8930768307633080463e+248.to_s.should == "-3.893076830763308e+248"
+      6.5854032671803925627e-239.to_s.should == "6.5854032671803926e-239"
+      4.6257022188980878952e+177.to_s.should == "4.625702218898088e+177"
+      -1.9397155125507235603e-187.to_s.should == "-1.9397155125507236e-187"
+      8.5752156951245705056e+117.to_s.should == "8.57521569512457e+117"
+      -2.4784875958162501671e-132.to_s.should == "-2.4784875958162502e-132"
+      -4.4125691841230058457e-203.to_s.should == "-4.412569184123006e-203"
+    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
+    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
+      #   puts "#{'%.20f' % float}.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
+      5.17869899999999994122.to_s.should == "5.178699"
+      905.62695729999995819526.to_s.should == "905.6269573"
+      62.75999999999999801048.to_s.should == "62.76"
+      6.93856795800000014651.to_s.should == "6.938567958"
+      4.95999999999999996447.to_s.should == "4.96"
+      32.77993899999999882766.to_s.should == "32.779939"
+      544.12756779999995160324.to_s.should == "544.1275678"
+      66.25801119999999855281.to_s.should == "66.2580112"
+      7.90000000000000035527.to_s.should == "7.9"
+      5.93100000000000004974.to_s.should == "5.931"
+      5.21229313600000043749.to_s.should == "5.212293136"
+      503.44173809000000119340.to_s.should == "503.44173809"
+      79.26000000000000511591.to_s.should == "79.26"
+      8.51524999999999998579.to_s.should == "8.51525"
+      174.00000000000000000000.to_s.should == "174.0"
+      50.39580000000000126192.to_s.should == "50.3958"
+      35.28999999999999914735.to_s.should == "35.29"
+      5.43136675399999990788.to_s.should == "5.431366754"
+      654.07680000000004838512.to_s.should == "654.0768"
+      6.07423700000000010846.to_s.should == "6.074237"
+      102.25779799999999397642.to_s.should == "102.257798"
+      5.08129999999999970584.to_s.should == "5.0813"
+      6.00000000000000000000.to_s.should == "6.0"
+      8.30000000000000071054.to_s.should == "8.3"
+      32.68345999999999662577.to_s.should == "32.68346"
+      581.11170000000004165486.to_s.should == "581.1117"
+      76.31342999999999676675.to_s.should == "76.31343"
+      438.30826000000001840817.to_s.should == "438.30826"
+      482.06631994000002805478.to_s.should == "482.06631994"
+      55.92721026899999969828.to_s.should == "55.927210269"
+      4.00000000000000000000.to_s.should == "4.0"
+      55.86693999999999959982.to_s.should == "55.86694"
+      787.98299999999994724931.to_s.should == "787.983"
+      5.73810511000000023074.to_s.should == "5.73810511"
+      74.51926810000000500622.to_s.should == "74.5192681"
+      892.89999999999997726263.to_s.should == "892.9"
+      68.27299999999999613465.to_s.should == "68.273"
+      904.10000000000002273737.to_s.should == "904.1"
+      5.23200000000000020606.to_s.should == "5.232"
+      4.09628000000000014325.to_s.should == "4.09628"
+      46.05152633699999853434.to_s.should == "46.051526337"
+      142.12884990599999923688.to_s.should == "142.128849906"
+      3.83057023500000015659.to_s.should == "3.830570235"
+      11.81684594699999912848.to_s.should == "11.816845947"
+      80.50000000000000000000.to_s.should == "80.5"
+      382.18215010000000120272.to_s.should == "382.1821501"
+      55.38444606899999911320.to_s.should == "55.384446069"
+      5.78000000000000024869.to_s.should == "5.78"
+      2.88244999999999995666.to_s.should == "2.88245"
+      43.27709999999999723741.to_s.should == "43.2771"
     end
 
     it "random values from divisions" do