cksum {bitops} | R Documentation |
return a cyclic redundancy checksum for each element in the argument.
cksum(a)
a |
coerced to character vector |
NA's appearing in the argument are returned as NA's.
The default calculation is identical to that given in pseudo-code in the ACM article (in the References).
numeric vector of length a
.
Steve Dutky sdutky@terpalum.umd.edu
Fashioned from cksum(1)
UNIX command line utility, i.e.,
man cksum
.
Dilip V. Sarwate (1988). Computation of Cyclic Redundancy Checks Via Table Lookup, Communications of the ACM, August 1988. vol 31, No.8 page 1008-1013
b <- "I would rather have a bottle in front of me than frontal lobotomy\n" cksum(b) == 1342168430 ## -> TRUE