Function find_object_timedelta64_meta

numpy/core/src/multiarray/datetime.c:3687–3715

* Recursively determines the metadata for an NPY_TIMEDELTA dtype. * * Returns 0 on success, -1 on failure. */

 * Returns 0 on success, -1 on failure.
 */
static int
find_object_timedelta64_meta(PyObject *obj, PyArray_DatetimeMetaData *meta)
{
    /* Datetime scalar -> use its metadata */
    if (PyArray_IsScalar(obj, Timedelta)) {
        PyTimedeltaScalarObject *dts = (PyTimedeltaScalarObject *)obj;

        /* Combine it with 'meta' */
        if (compute_datetime_metadata_greatest_common_divisor(meta,
                        &dts->obmeta, meta, 1, 1) < 0) {
            return -1;
        }

        return 0;
    }
    /* String -> parse it to find out */
    else if (PyBytes_Check(obj) || PyUnicode_Check(obj)) {
        /* No timedelta parser yet */
        return 0;
    }
    /* Python timedelta object -> 'us' */
    else if (PyDelta_Check(obj)) {
        return delta_checker(meta);
    }
    /* Otherwise ignore it */
    else {
        return 0;
    }
}

/*
 * Examines all the objects in the given Python object by