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/*=============================================================================
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 Fredrik Johansson
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include "flint.h"
#include "fmpz.h"
#include "fmpz_mat.h"
#include "fmpz_poly.h"
#include "fmpz_poly_mat.h"
int
main(void)
{
slong i;
FLINT_TEST_INIT(state);
flint_printf("mullow....");
fflush(stdout);
/* Compare with mul */
for (i = 0; i < 30 * flint_test_multiplier(); i++)
{
fmpz_poly_mat_t A, B, C, D;
slong m, n, k, bits, deg, len;
m = n_randint(state, 20);
n = n_randint(state, 20);
k = n_randint(state, 20);
deg = 1 + n_randint(state, 10);
bits = 1 + n_randint(state, 100);
len = n_randint(state, 10);
fmpz_poly_mat_init(A, m, n);
fmpz_poly_mat_init(B, n, k);
fmpz_poly_mat_init(C, m, k);
fmpz_poly_mat_init(D, m, k);
fmpz_poly_mat_randtest(A, state, deg, bits);
fmpz_poly_mat_randtest(B, state, deg, bits);
fmpz_poly_mat_randtest(C, state, deg, bits); /* noise in output */
fmpz_poly_mat_randtest(D, state, deg, bits); /* noise in output */
fmpz_poly_mat_mullow(C, A, B, len);
fmpz_poly_mat_mul(D, A, B);
fmpz_poly_mat_truncate(D, len);
if (!fmpz_poly_mat_equal(C, D))
{
flint_printf("FAIL:\n");
flint_printf("A:\n");
fmpz_poly_mat_print(A, "x");
flint_printf("B:\n");
fmpz_poly_mat_print(B, "x");
flint_printf("C:\n");
fmpz_poly_mat_print(C, "x");
flint_printf("D:\n");
fmpz_poly_mat_print(D, "x");
flint_printf("\n");
abort();
}
fmpz_poly_mat_clear(A);
fmpz_poly_mat_clear(B);
fmpz_poly_mat_clear(C);
fmpz_poly_mat_clear(D);
}
/* Check aliasing C and A */
for (i = 0; i < 10 * flint_test_multiplier(); i++)
{
fmpz_poly_mat_t A, B, C;
slong m, n, bits, deg, len;
m = n_randint(state, 20);
n = n_randint(state, 20);
deg = 1 + n_randint(state, 10);
bits = 1 + n_randint(state, 100);
len = n_randint(state, 10);
fmpz_poly_mat_init(A, m, n);
fmpz_poly_mat_init(B, n, n);
fmpz_poly_mat_init(C, m, n);
fmpz_poly_mat_randtest(A, state, deg, bits);
fmpz_poly_mat_randtest(B, state, deg, bits);
fmpz_poly_mat_randtest(C, state, deg, bits); /* noise in output */
fmpz_poly_mat_mullow(C, A, B, len);
fmpz_poly_mat_mullow(A, A, B, len);
if (!fmpz_poly_mat_equal(C, A))
{
flint_printf("FAIL:\n");
flint_printf("A:\n");
fmpz_poly_mat_print(A, "x");
flint_printf("B:\n");
fmpz_poly_mat_print(B, "x");
flint_printf("C:\n");
fmpz_poly_mat_print(C, "x");
flint_printf("\n");
abort();
}
fmpz_poly_mat_clear(A);
fmpz_poly_mat_clear(B);
fmpz_poly_mat_clear(C);
}
/* Check aliasing C and B */
for (i = 0; i < 10 * flint_test_multiplier(); i++)
{
fmpz_poly_mat_t A, B, C;
slong m, n, bits, deg, len;
m = n_randint(state, 20);
n = n_randint(state, 20);
deg = 1 + n_randint(state, 10);
bits = 1 + n_randint(state, 100);
len = n_randint(state, 10);
fmpz_poly_mat_init(A, m, m);
fmpz_poly_mat_init(B, m, n);
fmpz_poly_mat_init(C, m, n);
fmpz_poly_mat_randtest(A, state, deg, bits);
fmpz_poly_mat_randtest(B, state, deg, bits);
fmpz_poly_mat_randtest(C, state, deg, bits); /* noise in output */
fmpz_poly_mat_mullow(C, A, B, len);
fmpz_poly_mat_mullow(B, A, B, len);
if (!fmpz_poly_mat_equal(C, B))
{
flint_printf("FAIL:\n");
flint_printf("A:\n");
fmpz_poly_mat_print(A, "x");
flint_printf("B:\n");
fmpz_poly_mat_print(B, "x");
flint_printf("C:\n");
fmpz_poly_mat_print(C, "x");
flint_printf("\n");
abort();
}
fmpz_poly_mat_clear(A);
fmpz_poly_mat_clear(B);
fmpz_poly_mat_clear(C);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}
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