92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
/*=============================================================================
|
|
|
|
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) 2010 William Hart
|
|
Copyright (C) 2011 Fredrik Johansson
|
|
|
|
******************************************************************************/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <gmp.h>
|
|
#include "flint.h"
|
|
#include "nmod_poly.h"
|
|
#include "ulong_extras.h"
|
|
#include "fmpz.h"
|
|
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
int i, result = 1;
|
|
FLINT_TEST_INIT(state);
|
|
|
|
|
|
flint_printf("interpolate_nmod_vec_barycentric....");
|
|
fflush(stdout);
|
|
|
|
for (i = 0; i < 1000 * flint_test_multiplier(); i++)
|
|
{
|
|
nmod_poly_t P, Q;
|
|
mp_ptr x, y;
|
|
mp_limb_t mod;
|
|
slong j, n, npoints;
|
|
|
|
mod = n_randtest_prime(state, 0);
|
|
npoints = n_randint(state, FLINT_MIN(100, mod));
|
|
n = n_randint(state, npoints + 1);
|
|
|
|
nmod_poly_init(P, mod);
|
|
nmod_poly_init(Q, mod);
|
|
x = _nmod_vec_init(npoints);
|
|
y = _nmod_vec_init(npoints);
|
|
|
|
nmod_poly_randtest(P, state, n);
|
|
|
|
for (j = 0; j < npoints; j++)
|
|
x[j] = j;
|
|
|
|
nmod_poly_evaluate_nmod_vec(y, P, x, npoints);
|
|
nmod_poly_interpolate_nmod_vec_barycentric(Q, x, y, npoints);
|
|
|
|
result = nmod_poly_equal(P, Q);
|
|
|
|
if (!result)
|
|
{
|
|
flint_printf("FAIL:\n");
|
|
flint_printf("mod=%wu, n=%wd, npoints=%wd\n\n", mod, n, npoints);
|
|
nmod_poly_print(P), flint_printf("\n\n");
|
|
nmod_poly_print(Q), flint_printf("\n\n");
|
|
abort();
|
|
}
|
|
|
|
nmod_poly_clear(P);
|
|
nmod_poly_clear(Q);
|
|
_nmod_vec_clear(x);
|
|
_nmod_vec_clear(y);
|
|
}
|
|
|
|
FLINT_TEST_CLEANUP(state);
|
|
|
|
flint_printf("PASS\n");
|
|
return 0;
|
|
}
|