* complex.c: uses f_(in)?exact_p macro.

	* rational.c: ditto.

	* bignum.c (rb_big_pow): bignum**bignum - should calculate without
	  rational.

	* lib/complex.rb: should override Math module at most once.

	* lib/mathn.rb: requires 'cmath' directly.

-この行以下は無視されます --

M    complex.c
M    ChangeLog
M    lib/mathn.rb
M    lib/complex.rb
M    bignum.c
M    rational.c


git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@19431 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 10 insertions, 4 deletions

diff --git a/lib/complex.rb b/lib/complex.rb
index 1845f30b1..70e168e91 100644
--- a/lib/complex.rb
+++ b/lib/complex.rb
@@ -1,7 +1,9 @@
 require 'cmath'
 
-Object.instance_eval{remove_const :Math}
-Math = CMath
+unless defined?(Math.exp!)
+  Object.instance_eval{remove_const :Math}
+  Math = CMath
+end
 
 def Complex.generic? (other)
   other.kind_of?(Integer) ||
diff --git a/lib/mathn.rb b/lib/mathn.rb
index 2af2b83da..b29f994ac 100644
--- a/lib/mathn.rb
+++ b/lib/mathn.rb
@@ -9,11 +9,15 @@
 #   
 #
 
-require "complex.rb"
-require "rational.rb"
+require "cmath.rb"
 require "matrix.rb"
 require "prime.rb"
 
+unless defined?(Math.exp!)
+  Object.instance_eval{remove_const :Math}
+  Math = CMath
+end
+
 class Fixnum
   remove_method :/
   alias / quo