pqc/external/flint-2.4.3/fmpq_poly/test/t-evaluate_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) 2009 William Hart
Copyright (C) 2010 Sebastian Pancratz
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "fmpz.h"
#include "fmpq_poly.h"
#include "ulong_extras.h"
int
main(void)
{
int i, result;
FLINT_TEST_INIT(state);
flint_printf("evaluate_fmpz....");
fflush(stdout);
/* Check that (f+g)(a) = f(a) + g(a) */
for (i = 0; i < 1000 * flint_test_multiplier(); i++)
{
fmpz_t a;
fmpq_poly_t f, g, h;
fmpq_t x, y;
fmpq_init(x);
fmpq_init(y);
fmpz_init(a);
fmpq_poly_init(f);
fmpq_poly_init(g);
fmpq_poly_init(h);
fmpq_poly_randtest(f, state, n_randint(state, 100), 200);
fmpq_poly_randtest(g, state, n_randint(state, 100), 200);
fmpz_randtest(a, state, n_randint(state, 100));
fmpq_poly_evaluate_fmpz(x, f, a);
fmpq_poly_evaluate_fmpz(y, g, a);
fmpq_add(x, x, y);
fmpq_poly_add(h, f, g);
fmpq_poly_evaluate_fmpz(y, h, a);
result = (fmpq_equal(x, y));
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("f = "), fmpq_poly_debug(f), flint_printf("\n");
flint_printf("g = "), fmpq_poly_debug(g), flint_printf("\n");
flint_printf("a = "), fmpz_print(a), flint_printf("\n");
flint_printf("f(a) + g(a) = "), fmpq_print(x), flint_printf("\n\n");
flint_printf("(f + g)(a) = "), fmpq_print(y), flint_printf("\n\n");
abort();
}
fmpq_clear(x);
fmpq_clear(y);
fmpz_clear(a);
fmpq_poly_clear(f);
fmpq_poly_clear(g);
fmpq_poly_clear(h);
}
/* Check that (f*g)(a) = f(a) * g(a) */
for (i = 0; i < 1000 * flint_test_multiplier(); i++)
{
fmpz_t a;
fmpq_poly_t f, g;
fmpq_t x, y;
fmpq_init(x);
fmpq_init(y);
fmpz_init(a);
fmpq_poly_init(f);
fmpq_poly_init(g);
fmpq_poly_randtest(f, state, n_randint(state, 100), 200);
fmpq_poly_randtest(g, state, n_randint(state, 100), 200);
fmpz_randtest(a, state, n_randint(state, 100));
fmpq_poly_evaluate_fmpz(x, f, a);
fmpq_poly_evaluate_fmpz(y, g, a);
fmpq_mul(x, x, y);
fmpq_poly_mul(f, f, g);
fmpq_poly_evaluate_fmpz(y, f, a);
result = (fmpq_equal(x, y));
if (!result)
{
flint_printf("FAIL:\n");
fmpz_print(a), flint_printf("\n\n");
abort();
}
fmpq_clear(x);
fmpq_clear(y);
fmpz_clear(a);
fmpq_poly_clear(f);
fmpq_poly_clear(g);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}