pqc/external/flint-2.4.3/fq_nmod/test/t-mul_fmpz.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) 2013 Mike Hansen
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "fmpz.h"
#include "fq_nmod.h"
#include "long_extras.h"
int
main(void)
{
int i, result;
FLINT_TEST_INIT(state);
flint_printf("mul_fmpz....");
fflush(stdout);
/* Check aliasing of a, b */
for (i = 0; i < 2000; i++)
{
fmpz_t p;
slong d;
fq_nmod_ctx_t ctx;
fmpz_t x;
fq_nmod_t a, b;
fmpz_init(p);
fmpz_set_ui(p, n_randprime(state, 2 + n_randint(state, 3), 1));
d = n_randint(state, 10) + 1;
fq_nmod_ctx_init_conway(ctx, p, d, "a");
fq_nmod_init(a, ctx);
fq_nmod_init(b, ctx);
fmpz_init(x);
fq_nmod_randtest(a, state, ctx);
fmpz_randtest_mod_signed(x,state,fq_nmod_ctx_prime(ctx));
fq_nmod_mul_fmpz(b, a, x, ctx);
fq_nmod_mul_fmpz(a, a, x, ctx);
result = (fq_nmod_equal(a, b, ctx));
if (!result)
{
flint_printf("FAIL:\n\n");
flint_printf("a = "), fq_nmod_print_pretty(a, ctx), flint_printf("\n");
flint_printf("b = "), fq_nmod_print_pretty(b, ctx), flint_printf("\n");
flint_printf("x = "), fmpz_print(x), flint_printf("\n");
abort();
}
fq_nmod_clear(a, ctx);
fq_nmod_clear(b, ctx);
fmpz_clear(x);
fmpz_clear(p);
fq_nmod_ctx_clear(ctx);
}
/* compare with direct multiplication */
for (i = 0; i < 2000; i++)
{
fmpz_t p;
slong d;
fq_nmod_ctx_t ctx;
fmpz_t x;
fq_nmod_t a, c;
nmod_poly_t b;
fmpz_init(p);
fmpz_set_ui(p, n_randprime(state, 2 + n_randint(state, 3), 1));
d = n_randint(state, 10) + 1;
fq_nmod_ctx_init_conway(ctx, p, d, "a");
fq_nmod_init(a, ctx);
fq_nmod_init(c, ctx);
fmpz_init(x);
nmod_poly_init(b, fmpz_get_ui(p));
fq_nmod_randtest(a, state, ctx);
fmpz_randtest_mod_signed(x, state, fq_nmod_ctx_prime(ctx));
fq_nmod_mul_fmpz(c, a, x, ctx);
if (fmpz_cmp_ui(x, 0) < 0)
{
nmod_poly_scalar_mul_nmod(b,a,-fmpz_get_si(x));
nmod_poly_neg(b, b);
}
else
{
nmod_poly_scalar_mul_nmod(b,a,fmpz_get_ui(x));
}
result = (fq_nmod_equal(c, b, ctx));
if (!result)
{
flint_printf("FAIL:\n\n");
flint_printf("a = "), fq_nmod_print_pretty(a, ctx), flint_printf("\n");
flint_printf("b = "), fq_nmod_print_pretty(b, ctx), flint_printf("\n");
flint_printf("c = "), fq_nmod_print_pretty(b, ctx), flint_printf("\n");
flint_printf("x = "), fmpz_print(x), flint_printf("\n");
abort();
}
fq_nmod_clear(a, ctx);
fq_nmod_clear(c, ctx);
nmod_poly_clear(b);
fmpz_clear(p);
fmpz_clear(x);
fq_nmod_ctx_clear(ctx);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}