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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42751 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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akr 2013-09-01 01:00:15 +00:00
parent 7bb549d6b5
commit a0a0b61b68
1 changed files with 4 additions and 0 deletions
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4
bignum.c
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@ -6545,6 +6545,8 @@ rb_big_size(VALUE big)
* (The bit position of the bit 2**n is n+1.)
* If there is no such bit (zero or minus one), zero is returned.
*
* I.e. This method returns ceil(log2(int < 0 ? -int : int+1)).
*
* (-2**10000-1).bit_length #=> 10001
* (-2**10000).bit_length #=> 10000
* (-2**10000+1).bit_length #=> 10000
@ -6615,6 +6617,8 @@ rb_big_bit_length(VALUE big)
* (The bit position of the bit 2**n is n+1.)
* If there is no such bit (zero or minus one), zero is returned.
*
* I.e. This method returns ceil(log2(int < 0 ? -int : int+1)).
*
* (-2**12-1).bit_length #=> 13
* (-2**12).bit_length #=> 12
* (-2**12+1).bit_length #=> 12