Function convert_timedelta_to_pyobject

numpy/core/src/multiarray/datetime.c:2896–2969

* Converts a timedelta into a PyObject *. * * Not-a-time is returned as the string "NaT". * For microseconds or coarser, returns a datetime.timedelta. * For units finer than microseconds, returns an integer. */

 * For units finer than microseconds, returns an integer.
 */
NPY_NO_EXPORT PyObject *
convert_timedelta_to_pyobject(npy_timedelta td, PyArray_DatetimeMetaData *meta)
{
    npy_timedelta value;
    int days = 0, seconds = 0, useconds = 0;

    /*
     * Convert NaT (not-a-time) into None.
     */
    if (td == NPY_DATETIME_NAT) {
        Py_RETURN_NONE;
    }

    /*
     * If the type's precision is greater than microseconds, is
     * Y/M/B (nonlinear units), or is generic units, return an int
     */
    if (meta->base > NPY_FR_us ||
                    meta->base == NPY_FR_Y ||
                    meta->base == NPY_FR_M ||
                    meta->base == NPY_FR_GENERIC) {
        return PyLong_FromLongLong(td);
    }

    value = td;

    /* Apply the unit multiplier (TODO: overflow treatment...) */
    value *= meta->num;

    /* Convert to days/seconds/useconds */
    switch (meta->base) {
        case NPY_FR_W:
            days = value * 7;
            break;
        case NPY_FR_D:
            days = value;
            break;
        case NPY_FR_h:
            days = extract_unit_64(&value, 24ULL);
            seconds = value*60*60;
            break;
        case NPY_FR_m:
            days = extract_unit_64(&value, 60ULL*24);
            seconds = value*60;
            break;
        case NPY_FR_s:
            days = extract_unit_64(&value, 60ULL*60*24);
            seconds = value;
            break;
        case NPY_FR_ms:
            days     = extract_unit_64(&value, 1000ULL*60*60*24);
            seconds  = extract_unit_64(&value, 1000ULL);
            useconds = value*1000;
            break;
        case NPY_FR_us:
            days     = extract_unit_64(&value, 1000ULL*1000*60*60*24);
            seconds  = extract_unit_64(&value, 1000ULL*1000);
            useconds = value;