Converts a logical vector from binary to decimal.
The bit vector may have any length, the last position is the least significant, i.e.
bits are multiplied with 2^(n-1), 2^(n-2), ..., 2^1, 2^0 where n is the
length of the bit vector.
to_decimal(bits)(integer(1)).
(logical())
Logical vector of input values. Missing values are treated as being FALSE.
If bits is longer than 30 elements, an exception is raised.