pqc/external/flint-2.4.3/fmpq_poly/test/t-interpolate_fmpz_vec.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 "fmpz.h"
#include "fmpz_vec.h"
#include "fmpz_poly.h"
#include "fmpq_poly.h"
#include "ulong_extras.h"
int
main(void)
{
int i;
FLINT_TEST_INIT(state);
flint_printf("interpolate_fmpz_vec....");
fflush(stdout);
for (i = 0; i < 100 * flint_test_multiplier(); i++)
{
fmpq_poly_t P;
fmpz *x, *y, *z;
fmpq_t q;
slong j, n, bits;
n = n_randint(state, 50);
bits = n_randint(state, 100);
x = _fmpz_vec_init(n);
y = _fmpz_vec_init(n);
z = _fmpz_vec_init(n);
fmpq_poly_init(P);
for (j = 0; j < n; j++)
fmpz_set_si(x + j, -n/2 + j);
_fmpz_vec_randtest(y, state, n, bits);
fmpq_poly_interpolate_fmpz_vec(P, x, y, n);
fmpq_init(q);
for (j = 0; j < n; j++)
{
fmpq_poly_evaluate_fmpz(q, P, x + j);
fmpz_set(z + j, fmpq_numref(q));
if (!fmpz_equal(z + j, y + j) || !fmpz_is_one(fmpq_denref(q)))
{
flint_printf("FAIL:\n");
flint_printf("x:\n"); _fmpz_vec_print(x, n); flint_printf("\n\n");
flint_printf("y:\n"); _fmpz_vec_print(y, n); flint_printf("\n\n");
flint_printf("P:\n"); fmpq_poly_print(P), flint_printf("\n\n");
abort();
}
}
fmpq_clear(q);
fmpq_poly_clear(P);
_fmpz_vec_clear(x, n);
_fmpz_vec_clear(y, n);
_fmpz_vec_clear(z, n);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}