}
}
-// Int63 returns a non-negative pseudo-random 63-bit integer as an int64.
-func (rng *rngSource) Int63() int64 {
+// Int64 returns a non-negative pseudo-random 63-bit integer as an int64.
+func (rng *rngSource) Int64() int64 {
return int64(rng.Uint64() & rngMask)
}