pqc/external/flint-2.4.3/qadic/test/t-norm_resultant.c
2014-05-24 23:16:06 +02:00

112 lines
3.2 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) 2012 Sebastian Pancratz
******************************************************************************/
#include <stdio.h>
#include "qadic.h"
#include "ulong_extras.h"
#include "long_extras.h"
int
main(void)
{
int i, result;
FLINT_TEST_INIT(state);
flint_printf("norm_resultant... ");
fflush(stdout);
/* Compare with product of Galois conjugates */
for (i = 0; i < 2000; i++)
{
fmpz_t p;
slong d, N;
qadic_ctx_t ctx;
qadic_t a, b, c;
padic_t x, y;
slong j;
int ans;
fmpz_init_set_ui(p, n_randprime(state, 2 + n_randint(state, 3), 1));
d = n_randint(state, 10) + 1;
N = z_randint(state, 50) + 1;
qadic_ctx_init_conway(ctx, p, d, FLINT_MAX(0,N-10), FLINT_MAX(0,N+10), "a", PADIC_SERIES);
qadic_init2(a, N);
qadic_init2(b, N);
qadic_init2(c, N);
padic_init2(x, N);
padic_init2(y, N);
qadic_randtest_val(a, state, 0, ctx);
qadic_reduce(a, ctx);
qadic_norm_resultant(x, a, ctx);
qadic_one(b);
for (j = 0; j < d; j++)
{
qadic_frobenius(c, a, j, ctx);
qadic_mul(b, b, c, ctx);
}
ans = qadic_get_padic(y, b, ctx);
result = (ans && padic_equal(x, y));
if (!result)
{
flint_printf("FAIL:\n\n");
flint_printf("a = "), qadic_print_pretty(a, ctx), flint_printf("\n");
flint_printf("b = "), qadic_print_pretty(b, ctx), flint_printf("\n");
flint_printf("x = "), padic_print(x, &ctx->pctx), flint_printf("\n");
flint_printf("y = "), padic_print(y, &ctx->pctx), flint_printf("\n");
for (j = 0; j < d; j++)
{
qadic_frobenius(c, a, j, ctx);
flint_printf("sigma^%wd = ", j), qadic_print_pretty(c, ctx), flint_printf("\n");
}
flint_printf("ans = %d\n", ans);
abort();
}
qadic_clear(a);
qadic_clear(b);
qadic_clear(c);
padic_clear(x);
padic_clear(y);
fmpz_clear(p);
qadic_ctx_clear(ctx);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return EXIT_SUCCESS;
}