[ruby-cvs:65006] naruse:r57840 (ruby_2_4): merge revision(s) 57227: [Backport #13078]

[naruse at ruby-lang.org]

naruse	2017-03-11 22:03:46 +0900 (Sat, 11 Mar 2017)

  New Revision: 57840

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=57840

  Log:
    merge revision(s) 57227: [Backport #13078]
    
    numeric.c: reduce fdiv
    
    * numeric.c (rb_int_fdiv_double): reduce first for more precise
      result.  [ruby-core:78886] [Bug #13078]

  Modified directories:
    branches/ruby_2_4/
  Modified files:
    branches/ruby_2_4/internal.h
    branches/ruby_2_4/numeric.c
    branches/ruby_2_4/test/ruby/test_rational.rb
    branches/ruby_2_4/version.h