pqc/external/flint-2.4.3/fmpz_mod_poly/test/t-compose_horner.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, 2010 Sebastian Pancratz
Copyright (C) 2009 William Hart
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "fmpz.h"
#include "fmpz_mod_poly.h"
#include "ulong_extras.h"
int
main(void)
{
int i, result;
FLINT_TEST_INIT(state);
flint_printf("compose_horner....");
fflush(stdout);
/* Check aliasing of a and c */
for (i = 0; i < 100; i++)
{
fmpz_t p;
fmpz_mod_poly_t a, b, c;
fmpz_init(p);
fmpz_randtest_unsigned(p, state, 2 * FLINT_BITS);
fmpz_add_ui(p, p, 2);
fmpz_mod_poly_init(a, p);
fmpz_mod_poly_init(b, p);
fmpz_mod_poly_init(c, p);
fmpz_mod_poly_randtest(a, state, n_randint(state, 80));
fmpz_mod_poly_randtest(b, state, n_randint(state, 30));
fmpz_mod_poly_compose_horner(c, a, b);
fmpz_mod_poly_compose_horner(a, a, b);
result = (fmpz_mod_poly_equal(a, c));
if (!result)
{
flint_printf("FAIL:\n");
fmpz_mod_poly_print(a), flint_printf("\n\n");
fmpz_mod_poly_print(b), flint_printf("\n\n");
fmpz_mod_poly_print(c), flint_printf("\n\n");
abort();
}
fmpz_mod_poly_clear(a);
fmpz_mod_poly_clear(b);
fmpz_mod_poly_clear(c);
fmpz_clear(p);
}
/* Check aliasing of b and c */
for (i = 0; i < 100; i++)
{
fmpz_t p;
fmpz_mod_poly_t a, b, c;
fmpz_init(p);
fmpz_randtest_unsigned(p, state, 2 * FLINT_BITS);
fmpz_add_ui(p, p, 2);
fmpz_mod_poly_init(a, p);
fmpz_mod_poly_init(b, p);
fmpz_mod_poly_init(c, p);
fmpz_mod_poly_randtest(a, state, n_randint(state, 80));
fmpz_mod_poly_randtest(b, state, n_randint(state, 30));
fmpz_mod_poly_compose_horner(c, a, b);
fmpz_mod_poly_compose_horner(b, a, b);
result = (fmpz_mod_poly_equal(b, c));
if (!result)
{
flint_printf("FAIL:\n");
fmpz_mod_poly_print(a), flint_printf("\n\n");
fmpz_mod_poly_print(b), flint_printf("\n\n");
fmpz_mod_poly_print(c), flint_printf("\n\n");
abort();
}
fmpz_mod_poly_clear(a);
fmpz_mod_poly_clear(b);
fmpz_mod_poly_clear(c);
fmpz_clear(p);
}
/* Compare with composition over Z[X] */
for (i = 0; i < 100; i++)
{
fmpz_t p;
fmpz_mod_poly_t a, b, c, d;
fmpz_poly_t A, B, C;
fmpz_init(p);
fmpz_randtest_unsigned(p, state, 2 * FLINT_BITS);
fmpz_add_ui(p, p, 2);
fmpz_mod_poly_init(a, p);
fmpz_mod_poly_init(b, p);
fmpz_mod_poly_init(c, p);
fmpz_mod_poly_init(d, p);
fmpz_mod_poly_randtest(a, state, n_randint(state, 80));
fmpz_mod_poly_randtest(b, state, n_randint(state, 30));
fmpz_poly_init(A);
fmpz_poly_init(B);
fmpz_poly_init(C);
fmpz_mod_poly_get_fmpz_poly(A, a);
fmpz_mod_poly_get_fmpz_poly(B, b);
fmpz_mod_poly_compose_horner(c, a, b);
fmpz_poly_compose(C, A, B);
fmpz_mod_poly_set_fmpz_poly(d, C);
result = (fmpz_mod_poly_equal(c, d));
if (!result)
{
flint_printf("FAIL:\n");
fmpz_mod_poly_print(a), flint_printf("\n\n");
fmpz_mod_poly_print(b), flint_printf("\n\n");
fmpz_mod_poly_print(c), flint_printf("\n\n");
fmpz_mod_poly_print(d), flint_printf("\n\n");
abort();
}
fmpz_mod_poly_clear(a);
fmpz_mod_poly_clear(b);
fmpz_mod_poly_clear(c);
fmpz_mod_poly_clear(d);
fmpz_poly_clear(A);
fmpz_poly_clear(B);
fmpz_poly_clear(C);
fmpz_clear(p);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}