# Functions
Int64 decodes an int64 from the buf in reverse order starting from the buf end and returns that value and the number of read bytes.
PutInt64 encodes an int64 into buf in reverse order starting from the buf end and returns the number of written bytes.
PutUint64 encodes a uint64 into buf in reverse order starting from the buf end and returns the number of written bytes.
Uint32 decodes a uint32 from the buf in reverse order starting from the buf end and returns that value and the number of read bytes.
Uint64 decodes a uint64 from the buf in reverse order starting from the buf end and returns that value and the number of read bytes.