Issue #22117: Fix rounding in _PyTime_FromSecondsObject()
* Rename _PyTime_FromObject() to _PyTime_FromSecondsObject()
* Add _PyTime_AsNanosecondsObject() and _testcapi.pytime_fromsecondsobject()
* Add unit tests
diff --git a/Include/pytime.h b/Include/pytime.h
index 9cf1170..78e4ae9 100644
--- a/Include/pytime.h
+++ b/Include/pytime.h
@@ -121,15 +121,18 @@
/* Convert a Python float or int to a timetamp.
Raise an exception and return -1 on error, return 0 on success. */
-PyAPI_FUNC(int) _PyTime_FromObject(_PyTime_t *t,
+PyAPI_FUNC(int) _PyTime_FromSecondsObject(_PyTime_t *t,
PyObject *obj,
_PyTime_round_t round);
/* Convert timestamp to a number of milliseconds (10^-3 seconds). */
-PyAPI_FUNC(_PyTime_t)
-_PyTime_AsMilliseconds(_PyTime_t t,
+PyAPI_FUNC(_PyTime_t) _PyTime_AsMilliseconds(_PyTime_t t,
_PyTime_round_t round);
+/* Convert timestamp to a number of nanoseconds (10^-9 seconds) as a Python int
+ object. */
+PyAPI_FUNC(PyObject *) _PyTime_AsNanosecondsObject(_PyTime_t t);
+
/* Convert a timestamp to a timeval structure. */
PyAPI_FUNC(int) _PyTime_AsTimeval(_PyTime_t t,
struct timeval *tv,