comp = proc (b: _bytevec)
	end comp

getb = proc (b: _bytevec, bit: int) returns (bool)
	end getb

getn = proc (b: _bytevec, bit, len: int) returns (int)
	end getn

setb = proc (b: _bytevec, bit: int)
	end setb

setn = proc (b: _bytevec, bit, len: int)
	end setn