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package body Mutils is
function Clog2 (V : Uns64) return Integer
is
Low : Natural;
begin
if V >= 2**16 then
if V >= 2**32 then
Low := 32;
else
Low := 16;
end if;
else
if V >= 2**8 then
Low := 8;
else
Low := 0;
end if;
end if;
for I in Low .. 63 loop
if 2**I >= V then
return I;
end if;
end loop;
return 64;
end Clog2;
end Mutils;
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