xor package:atomic-counter

xor :: Counter -> Int -> IO Int
atomic-counter Control.Concurrent.Counter Control.Concurrent.Counter.Lifted.IO
Atomically combine old value with a new one via bitwise xor. Returns old counter value.
xor :: Counter s -> Int -> ST s Int
atomic-counter Control.Concurrent.Counter.Lifted.ST
Atomically combine old value with a new one via bitwise xor. Returns old counter value.
xor :: Counter s -> Int# -> State# s -> (# State# s, Int# #)
atomic-counter Control.Concurrent.Counter.Unlifted
Atomically combine old value with a new one via bitwise xor. Returns old counter value.