kazu	2017-12-07 00:02:31 +0900 (Thu, 07 Dec 2017)

  New Revision: 61058

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=61058

  Log:
    `Integer#pow(b)` accepts numeric
    
    instead of integer only and returns numeric instead of integer only
    same as `Integer#**`

  Modified files:
    trunk/bignum.c
    trunk/test/ruby/test_numeric.rb
Index: bignum.c
===================================================================
--- bignum.c	(revision 61057)
+++ bignum.c	(revision 61058)
@@ -7028,7 +7028,7 @@ int_pow_tmp2(VALUE x, VALUE y, long mm, https://github.com/ruby/ruby/blob/trunk/bignum.c#L7028
 /*
  * Document-method: Integer#pow
  * call-seq:
- *    integer.pow(integer)           ->  integer
+ *    integer.pow(numeric)           ->  numeric
  *    integer.pow(integer, integer)  ->  integer
  *
  * Returns (modular) exponentiation as:
Index: test/ruby/test_numeric.rb
===================================================================
--- test/ruby/test_numeric.rb	(revision 61057)
+++ test/ruby/test_numeric.rb	(revision 61058)
@@ -386,6 +386,10 @@ class TestNumeric < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_numeric.rb#L386
   end
 
   def test_pow
+    assert_equal(2**3, 2.pow(3))
+    assert_equal(2**-1, 2.pow(-1))
+    assert_equal(2**0.5, 2.pow(0.5))
+    assert_equal((-1)**0.5, -1.pow(0.5))
     assert_equal(3**3 % 8, 3.pow(3, 8))
     assert_equal(3**3 % -8, 3.pow(3,-8))
     assert_equal(3**2 % -2, 3.pow(2,-2))

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