pqc/external/flint-2.4.3/nmod_poly/test/t-bit_pack.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) 2010 William Hart
******************************************************************************/
#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;
FLINT_TEST_INIT(state);
flint_printf("bit_pack/bit_unpack....");
fflush(stdout);
/* Check aliasing of a and c */
for (i = 0; i < 1000 * flint_test_multiplier(); i++)
{
nmod_poly_t a, b;
mp_limb_t n;
ulong bits;
mp_ptr mpn;
do
{
n = n_randtest_not_zero(state);
} while (n == 1);
bits = 2 * FLINT_BIT_COUNT(n) + n_randint(state, FLINT_BITS);
nmod_poly_init(a, n);
nmod_poly_init(b, n);
do
{
nmod_poly_randtest(a, state, n_randint(state, 100));
} while (a->length == 0);
mpn =
flint_malloc(sizeof(mp_limb_t) *
((bits * a->length - 1) / FLINT_BITS + 1));
_nmod_poly_bit_pack(mpn, a->coeffs, a->length, bits);
nmod_poly_fit_length(b, a->length);
_nmod_poly_bit_unpack(b->coeffs, a->length, mpn, bits, a->mod);
b->length = a->length;
result = (nmod_poly_equal(a, b));
if (!result)
{
flint_printf("FAIL:\n");
nmod_poly_print(a), flint_printf("\n\n");
nmod_poly_print(b), flint_printf("\n\n");
abort();
}
nmod_poly_clear(a);
nmod_poly_clear(b);
flint_free(mpn);
}
for (i = 0; i < 2000 * flint_test_multiplier(); i++)
{
fmpz_t f;
nmod_poly_t A, B;
slong b;
mp_limb_t n;
do
{
n = n_randtest_not_zero(state);
} while (n == 1);
fmpz_init(f);
nmod_poly_init(A, n);
nmod_poly_init(B, n);
nmod_poly_randtest(A, state, 1+n_randint(state,100));
b = FLINT_BIT_COUNT(n) + n_randint(state, FLINT_BITS);
nmod_poly_bit_pack(f, A, b);
nmod_poly_bit_unpack(B, f, b);
if (!nmod_poly_equal(A, B))
{
mpz_t zz;
flint_printf("FAIL:\n");
flint_printf("INPUT: ");
nmod_poly_print(A);
flint_printf("\n");
mpz_init(zz); fmpz_get_mpz(zz, f);
flint_printf("PACKED: ");
mpz_out_str(stdout, 2, zz);
flint_printf("\n");
flint_printf("OUTPUT: ");
nmod_poly_print(B);
flint_printf("\n\n");
abort();
}
fmpz_clear(f);
nmod_poly_clear(A);
nmod_poly_clear(B);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}