Function timsort_

numpy/core/src/npysort/timsort.cpp:497–536

template <typename Tag>
static int
timsort_(void *start, npy_intp num)
{
    using type = typename Tag::type;
    int ret;
    npy_intp l, n, stack_ptr, minrun;
    buffer_<Tag> buffer;
    run stack[TIMSORT_STACK_SIZE];
    buffer.pw = NULL;
    buffer.size = 0;
    stack_ptr = 0;
    minrun = compute_min_run(num);

    for (l = 0; l < num;) {
        n = count_run_<Tag>((type *)start, l, num, minrun);
        stack[stack_ptr].s = l;
        stack[stack_ptr].l = n;
        ++stack_ptr;
        ret = try_collapse_<Tag>((type *)start, stack, &stack_ptr, &buffer);

        if (NPY_UNLIKELY(ret < 0)) {
            goto cleanup;
        }

        l += n;
    }

    ret = force_collapse_<Tag>((type *)start, stack, &stack_ptr, &buffer);

    if (NPY_UNLIKELY(ret < 0)) {
        goto cleanup;
    }

    ret = 0;
cleanup:

    free(buffer.pw);

    return ret;
}

/* argsort */