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Fixnum#bit_length -> Integer (35198.0)

• 2.1.0
• 2.2.0
• 2.3.0

• インスタンスメソッド

self を表すのに必要なビット数を返します。

...-1).bit_length # => 13
(-2**12).bit_length # => 12
(-2**12+1).bit_length # => 12
-0x101.bit_length # => 9
-0x100.bit_length # => 8
-0xff.bit_length # => 8
-2.bit_length # => 1
-1.bit_length # => 0
0.bit_length...

...# => 0
1.bit_length # => 1
0xff.bit_length # => 8
0x100.bit_length # => 9
(2**12-1).bit_length # => 12
(2**12).bit_length # => 13
(2**12+1).bit_length # => 13

@see Bignum#bit_length...