Makefile.sub: C99 mathematics functions
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43407 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Makefile.sub: C99 mathematics functions
library. log2 needs to be defined, not only HAVE_LOG2.
[ruby-core:57992] [Bug #9044]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43407 b2dd03c8-39d4-4d8f-98ff-823fe69b080e