bm_hash_aref_flo.rb: fix data

* benchmark/bm_hash_aref_flo.rb: make more realistic data.
  [ruby-core:68632] [[Bug #10999]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50084 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Wed Mar 25 11:20:40 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* benchmark/bm_hash_aref_flo.rb: make more realistic data.
+	  [ruby-core:68632] [[Bug #10999]
+
 Wed Mar 25 10:39:06 2015  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
 
 	* .document: removed needless entries.

benchmark/bm_hash_aref_flo.rb

@@ -1,4 +1,4 @@
 h = {}
-strs = (1..10000).to_a.map!(&:to_f)
+strs = [*1..10000].map! {|i| i.fdiv(10)}
 strs.each { |s| h[s] = s }
 50.times { strs.each { |s| h[s] } }