/*
    Copyright (C) 2011 Fredrik Johansson

    This file is part of FLINT.

    FLINT is free software: you can redistribute it and/or modify it under
    the terms of the GNU Lesser General Public License (LGPL) as published
    by the Free Software Foundation; either version 2.1 of the License, or
    (at your option) any later version.  See <https://www.gnu.org/licenses/>.
*/

#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "arith.h"
#include "fmpz_vec.h"

static const mp_limb_t known[] = {
    1, 1, 2, 3, 4, 6, 6, 12, 15, 20, 30, 30, 60, 60, 84, 105, 140, 210,
    210, 420, 420, 420, 420, 840, 840, 1260, 1260, 1540, 2310, 2520,
    4620, 4620, 5460, 5460, 9240, 9240, 13860, 13860, 16380, 16380,
    27720, 30030, 32760, 60060, 60060, 60060, 60060, 120120
};

int main(void)
{
    fmpz * res;
    slong k, n;

    FLINT_TEST_INIT(state);

    flint_printf("landau_function_vec....");
    fflush(stdout);

    n = 45;
    res = _fmpz_vec_init(n);
    arith_landau_function_vec(res, n);

    for (k = 0; k < n; k++)
    {
        if (fmpz_cmp_ui(res + k, known[k]))
        {
            flint_printf("FAIL:\n");
            flint_printf("k = %wd, res[k] = %wd, expected: %wd\n",
                k, fmpz_get_si(res + k), known[k]);
            abort();
        }
    }

    _fmpz_vec_clear(res, n);

    FLINT_TEST_CLEANUP(state);
    flint_printf("PASS\n");
    return 0;
}