Function timestamp_ns_to_datetime

arrow-array/src/temporal_conversions.rs:202–211

(v: i64)

/// converts a `i64` representing a `timestamp(ns)` to [`NaiveDateTime`]
#[inline]
pub fn timestamp_ns_to_datetime(v: i64) -> Option<NaiveDateTime> {
    let (sec, nano_sec) = split_second(v, NANOSECONDS);

    let datetime = DateTime::from_timestamp(
        // extract seconds from nanoseconds
        sec, // discard extracted seconds
        nano_sec,
    )?;
    Some(datetime.naive_utc())
}

#[inline]
pub(crate) fn split_second(v: i64, base: i64) -> (i64, u32) {