Function PyArray_Sort

numpy/core/src/multiarray/item_selection.c:1496–1540

NUMPY_API * Sort an array in-place */

 * Sort an array in-place
 */
NPY_NO_EXPORT int
PyArray_Sort(PyArrayObject *op, int axis, NPY_SORTKIND which)
{
    PyArray_SortFunc *sort = NULL;
    int n = PyArray_NDIM(op);

    if (check_and_adjust_axis(&axis, n) < 0) {
        return -1;
    }

    if (PyArray_FailUnlessWriteable(op, "sort array") < 0) {
        return -1;
    }

    if (which < 0 || which >= NPY_NSORTS) {
        PyErr_SetString(PyExc_ValueError, "not a valid sort kind");
        return -1;
    }

    sort = PyArray_DESCR(op)->f->sort[which];

    if (sort == NULL) {
        if (PyArray_DESCR(op)->f->compare) {
            switch (which) {
                default:
                case NPY_QUICKSORT:
                    sort = npy_quicksort;
                    break;
                case NPY_HEAPSORT:
                    sort = npy_heapsort;
                    break;
                case NPY_STABLESORT:
                    sort = npy_timsort;
                    break;
            }
        }
        else {
            PyErr_SetString(PyExc_TypeError,
                            "type does not have compare function");
            return -1;
        }
    }

    return _new_sortlike(op, axis, sort, NULL, NULL, 0);
}


/*