diff options
Diffstat (limited to 'integer.rb')
| -rw-r--r-- | integer.rb | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/integer.rb b/integer.rb deleted file mode 100644 index b9cde8f390..0000000000 --- a/integer.rb +++ /dev/null @@ -1,125 +0,0 @@ -class Integer - def abs - Primitive.attr! 'inline' - Primitive.cexpr! 'rb_int_abs(self)' - end - - # call-seq: - # int.bit_length -> integer - # - # Returns the number of bits of the value of +int+. - # - # "Number of bits" means the bit position of the highest bit - # which is different from the sign bit - # (where the least significant bit has bit position 1). - # If there is no such bit (zero or minus one), zero is returned. - # - # I.e. this method returns <i>ceil(log2(int < 0 ? -int : int+1))</i>. - # - # (-2**1000-1).bit_length #=> 1001 - # (-2**1000).bit_length #=> 1000 - # (-2**1000+1).bit_length #=> 1000 - # (-2**12-1).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 - # (2**1000-1).bit_length #=> 1000 - # (2**1000).bit_length #=> 1001 - # (2**1000+1).bit_length #=> 1001 - # - # This method can be used to detect overflow in Array#pack as follows: - # - # if n.bit_length < 32 - # [n].pack("l") # no overflow - # else - # raise "overflow" - # end - def bit_length - Primitive.attr! 'inline' - Primitive.cexpr! 'rb_int_bit_length(self)' - end - - # call-seq: - # int.even? -> true or false - # - # Returns +true+ if +int+ is an even number. - def even? - Primitive.attr! 'inline' - Primitive.cexpr! 'rb_int_even_p(self)' - end - - # call-seq: - # int.integer? -> true - # - # Since +int+ is already an Integer, this always returns +true+. - def integer? - return true - end - - def magnitude - Primitive.attr! 'inline' - Primitive.cexpr! 'rb_int_abs(self)' - end - - # call-seq: - # int.odd? -> true or false - # - # Returns +true+ if +int+ is an odd number. - def odd? - Primitive.attr! 'inline' - Primitive.cexpr! 'rb_int_odd_p(self)' - end - - # call-seq: - # int.ord -> self - # - # Returns the +int+ itself. - # - # 97.ord #=> 97 - # - # This method is intended for compatibility to character literals - # in Ruby 1.9. - # - # For example, <code>?a.ord</code> returns 97 both in 1.8 and 1.9. - def ord - return self - end - - # call-seq: - # int.to_i -> integer - # - # Since +int+ is already an Integer, returns +self+. - # - # #to_int is an alias for #to_i. - def to_i - return self - end - - # call-seq: - # int.to_int -> integer - # - # Since +int+ is already an Integer, returns +self+. - def to_int - return self - end - - # call-seq: - # int.zero? -> true or false - # - # Returns +true+ if +int+ has a zero value. - def zero? - Primitive.attr! 'inline' - Primitive.cexpr! 'rb_int_zero_p(self)' - end -end |