Module datetime 

SQLite date/time functions (§13.3).

Implements: date(), time(), datetime(), julianday(), unixepoch(), strftime(), timediff().

Internal representation is Julian Day Number (f64). All functions parse input to JDN, apply modifiers left-to-right, then format.

Invalid inputs return NULL (never error).

Structs

DateFunc

DateTimeFunc

JuliandayFunc

StrftimeFunc

TimeFunc

TimediffFunc

UnixepochFunc

Functions

register_datetime_builtins

Register all §13.3 date/time functions.