pqc/external/flint-2.4.3/fmpz_poly/test/t-newton_to_monomial.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) 2012 Fredrik Johansson
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "fmpz.h"
#include "fmpz_poly.h"
#include "ulong_extras.h"
int
main(void)
{
int i;
FLINT_TEST_INIT(state);
flint_printf("newton_to_monomial....");
fflush(stdout);
for (i = 0; i < 1000 * flint_test_multiplier(); i++)
{
fmpz_poly_t f, g;
fmpz * r;
slong k, n;
fmpz_poly_init(f);
fmpz_poly_init(g);
fmpz_poly_randtest(f, state, 1 + n_randint(state, 20),
1 + n_randint(state, 200));
n = fmpz_poly_length(f);
r = _fmpz_vec_init(n);
for (k = 0; k < n; k++)
fmpz_randtest(r + k, state, n_randint(state, 200));
fmpz_poly_set(g, f);
_fmpz_poly_newton_to_monomial(g->coeffs, r, n);
_fmpz_poly_monomial_to_newton(g->coeffs, r, n);
if (!fmpz_poly_equal(f, g))
{
flint_printf("FAIL: roundtrip\n");
fmpz_poly_print(f); flint_printf("\n");
fmpz_poly_print(g); flint_printf("\n");
abort();
}
fmpz_poly_clear(f);
fmpz_poly_clear(g);
_fmpz_vec_clear(r, n);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}