pqc/external/flint-2.4.3/fmpq_poly/test/t-scalar_div_mpq.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 Sebastian Pancratz
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "fmpz.h"
#include "fmpq_poly.h"
#include "long_extras.h"
#include "ulong_extras.h"
int
main(void)
{
int i, result;
ulong cflags = UWORD(0);
FLINT_TEST_INIT(state);
flint_printf("scalar_div_mpq....");
fflush(stdout);
/* Check aliasing of a and b */
for (i = 0; i < 1000 * flint_test_multiplier(); i++)
{
fmpq_poly_t a, b;
fmpz_t r, s;
mpq_t z;
mpq_init(z);
fmpz_init(r);
fmpz_init(s);
fmpz_randtest_not_zero(r, state, 100);
fmpz_randtest_not_zero(s, state, 100);
fmpz_get_mpz(mpq_numref(z), r);
fmpz_get_mpz(mpq_denref(z), s);
mpq_canonicalize(z);
fmpq_poly_init(a);
fmpq_poly_init(b);
fmpq_poly_randtest(a, state, n_randint(state, 100), 200);
fmpq_poly_scalar_div_mpq(b, a, z);
fmpq_poly_scalar_div_mpq(a, a, z);
cflags |= fmpq_poly_is_canonical(a) ? 0 : 1;
cflags |= fmpq_poly_is_canonical(b) ? 0 : 2;
result = (fmpq_poly_equal(a, b) && !cflags);
if (!result)
{
flint_printf("FAIL (aliasing):\n\n");
fmpq_poly_debug(a), flint_printf("\n\n");
fmpq_poly_debug(b), flint_printf("\n\n");
gmp_printf("z = %Qd\n\n", z);
flint_printf("cflags = %wu\n\n", cflags);
abort();
}
mpq_clear(z);
fmpz_clear(r);
fmpz_clear(s);
fmpq_poly_clear(a);
fmpq_poly_clear(b);
}
/* Check that (a / n1) / n2 == a / (n1 * n2) */
for (i = 0; i < 1000 * flint_test_multiplier(); i++)
{
fmpq_poly_t a, lhs, rhs;
fmpz_t r, s;
mpq_t z1, z2, z;
fmpz_init(r);
fmpz_init(s);
mpq_init(z1);
mpq_init(z2);
mpq_init(z);
fmpz_randtest_not_zero(r, state, 100);
fmpz_randtest_not_zero(s, state, 100);
fmpz_get_mpz(mpq_numref(z1), r);
fmpz_get_mpz(mpq_denref(z1), s);
mpq_canonicalize(z1);
fmpz_randtest_not_zero(r, state, 100);
fmpz_randtest_not_zero(s, state, 100);
fmpz_get_mpz(mpq_numref(z2), r);
fmpz_get_mpz(mpq_denref(z2), s);
mpq_canonicalize(z2);
mpq_mul(z, z1, z2);
fmpq_poly_init(a);
fmpq_poly_init(lhs);
fmpq_poly_init(rhs);
fmpq_poly_randtest(a, state, n_randint(state, 100), 200);
fmpq_poly_scalar_div_mpq(lhs, a, z1);
fmpq_poly_scalar_div_mpq(lhs, lhs, z2);
fmpq_poly_scalar_div_mpq(rhs, a, z);
cflags |= fmpq_poly_is_canonical(lhs) ? 0 : 1;
cflags |= fmpq_poly_is_canonical(rhs) ? 0 : 2;
result = (fmpq_poly_equal(lhs, rhs) && !cflags);
if (!result)
{
flint_printf("FAIL (a / n1 / n2):\n");
fmpq_poly_debug(a), flint_printf("\n\n");
gmp_printf("z1 = %Qd\n\n", z1);
gmp_printf("z2 = %Qd\n\n", z2);
gmp_printf("z = %Qd\n\n", z);
fmpq_poly_debug(lhs), flint_printf("\n\n");
fmpq_poly_debug(rhs), flint_printf("\n\n");
flint_printf("cflags = %wu\n\n", cflags);
abort();
}
mpq_clear(z1);
mpq_clear(z2);
mpq_clear(z);
fmpz_clear(r);
fmpz_clear(s);
fmpq_poly_clear(a);
fmpq_poly_clear(lhs);
fmpq_poly_clear(rhs);
}
/* Check that (a + b) / n == a/n + b/n */
for (i = 0; i < 1000 * flint_test_multiplier(); i++)
{
fmpq_poly_t a, b, lhs, rhs;
fmpz_t r, s;
mpq_t z;
fmpz_init(r);
fmpz_init(s);
mpq_init(z);
fmpz_randtest_not_zero(r, state, 100);
fmpz_randtest_not_zero(s, state, 100);
fmpz_get_mpz(mpq_numref(z), r);
fmpz_get_mpz(mpq_denref(z), s);
mpq_canonicalize(z);
fmpq_poly_init(a);
fmpq_poly_init(b);
fmpq_poly_init(lhs);
fmpq_poly_init(rhs);
fmpq_poly_randtest(a, state, n_randint(state, 100), 200);
fmpq_poly_randtest(b, state, n_randint(state, 100), 200);
fmpq_poly_scalar_div_mpq(lhs, a, z);
fmpq_poly_scalar_div_mpq(rhs, b, z);
fmpq_poly_add(rhs, lhs, rhs);
fmpq_poly_add(lhs, a, b);
fmpq_poly_scalar_div_mpq(lhs, lhs, z);
cflags |= fmpq_poly_is_canonical(lhs) ? 0 : 1;
cflags |= fmpq_poly_is_canonical(rhs) ? 0 : 2;
result = (fmpq_poly_equal(lhs, rhs) && !cflags);
if (!result)
{
flint_printf("FAIL ((a + b) / n):\n");
fmpq_poly_debug(a), flint_printf("\n\n");
fmpq_poly_debug(b), flint_printf("\n\n");
gmp_printf("z = %Qd\n\n", z);
fmpq_poly_debug(lhs), flint_printf("\n\n");
fmpq_poly_debug(rhs), flint_printf("\n\n");
flint_printf("cflags = %wu\n\n", cflags);
abort();
}
mpq_clear(z);
fmpz_clear(r);
fmpz_clear(s);
fmpq_poly_clear(a);
fmpq_poly_clear(b);
fmpq_poly_clear(lhs);
fmpq_poly_clear(rhs);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}