pqc/external/flint-2.4.3/arith/test/t-sum_of_squares.c

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2014-05-18 22:03:37 +00:00
/*=============================================================================
This file is part of FLINT.
FLINT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FLINT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FLINT; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
=============================================================================*/
/******************************************************************************
Copyright (C) 2011 Fredrik Johansson
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "arith.h"
#include "fmpz_vec.h"
#define N 10
static const fmpz known[N][N] = {
{1, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{1, 2, 0, 0, 2, 0, 0, 0, 0, 2},
{1, 4, 4, 0, 4, 8, 0, 0, 4, 4},
{1, 6, 12, 8, 6, 24, 24, 0, 12, 30},
{1, 8, 24, 32, 24, 48, 96, 64, 24, 104},
{1, 10, 40, 80, 90, 112, 240, 320, 200, 250},
{1, 12, 60, 160, 252, 312, 544, 960, 1020, 876},
{1, 14, 84, 280, 574, 840, 1288, 2368, 3444, 3542},
{1, 16, 112, 448, 1136, 2016, 3136, 5504, 9328, 12112},
{1, 18, 144, 672, 2034, 4320, 7392, 12672, 22608, 34802}
};
int main(void)
{
fmpz * r;
fmpz_t t;
slong i, j;
FLINT_TEST_INIT(state);
flint_printf("sum_of_squares....");
fflush(stdout);
r = _fmpz_vec_init(N);
fmpz_init(t);
for (i = 0; i < N; i++)
{
arith_sum_of_squares_vec(r, i, N);
for (j = 0; j < N; j++)
{
fmpz_set_ui(t, j);
arith_sum_of_squares(t, i, t);
if (!fmpz_equal(t, r + j) || !fmpz_equal(t, known[i] + j))
{
flint_printf("FAIL:\n");
flint_printf("i, j = %wd, %wd, r[j] = %wd, r(j) = %wd, "
"expected: %wd\n",
i, j, fmpz_get_si(r + j), fmpz_get_si(t), known[i][j]);
abort();
}
}
}
_fmpz_vec_clear(r, N);
fmpz_clear(t);
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}