From a28aa80c739a1d169649a4da833ef48cfb3465b3 Mon Sep 17 00:00:00 2001
From: eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 28 Mar 2019 14:22:29 +0000
Subject: Update to ruby/spec@e81b3cd

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67361 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 spec/ruby/core/float/to_s_spec.rb | 199 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 197 insertions(+), 2 deletions(-)

(limited to 'spec/ruby/core/float/to_s_spec.rb')

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
-- 
cgit v1.2.3