Test for NA in bit and bitwhich
## S3 method for class 'bit' is.na(x) ## S3 method for class 'bitwhich' is.na(x)
x
a bit or bitwhich vector
bit
bitwhich
vector of same type with all elements FALSE
FALSE
is.na(bitwhich): method for is.na from bitwhich
is.na(bitwhich)
is.na
is.na(bit(6)) is.na(bitwhich(6))