class Fixnum
Public Instance Methods
bit?(bit)
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# File lib/bitwise.rb, line 20 def bit?(bit) if bit == 7 value = 0 if self & 128 == 0 value = 1 if self & 128 != 0 elsif bit == 6 value = 0 if self & 64 == 0 value = 1 if self & 64 != 0 elsif bit == 5 value = 0 if self & 32 == 0 value = 1 if self & 32 != 0 elsif bit == 4 value = 0 if self & 16 == 0 value = 1 if self & 16 != 0 elsif bit == 3 value = 0 if self & 8 == 0 value = 1 if self & 8 != 0 elsif bit == 2 value = 0 if self & 4 == 0 value = 1 if self & 4 != 0 elsif bit == 1 value = 0 if self & 2 == 0 value = 1 if self & 2 != 0 elsif bit == 0 value = 0 if self & 1 == 0 value = 1 if self & 1 != 0 end return value end
clear_bit(bit)
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# File lib/bitwise.rb, line 63 def clear_bit(bit) self & case bit when 7 then 127 when 6 then 191 when 5 then 223 when 4 then 239 when 3 then 247 when 2 then 251 when 1 then 253 when 0 then 254 end end
set_bit(bit)
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# File lib/bitwise.rb, line 50 def set_bit(bit) self | case bit when 7 then 128 when 6 then 64 when 5 then 32 when 4 then 16 when 3 then 8 when 2 then 4 when 1 then 2 when 0 then 1 end end