139 lines
3.4 KiB
C
139 lines
3.4 KiB
C
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/*=============================================================================
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This file is part of FLINT.
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FLINT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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FLINT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FLINT; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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=============================================================================*/
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/******************************************************************************
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Copyright (C) 2009 William Hart
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Copyright (C) 2010 Sebastian Pancratz
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Copyright (C) 2011 Fredrik Johansson
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******************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <gmp.h>
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#include "flint.h"
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#include "ulong_extras.h"
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#include "fmpz.h"
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int
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main(void)
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{
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int i, result;
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FLINT_TEST_INIT(state);
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flint_printf("divexact2_uiui....");
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fflush(stdout);
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for (i = 0; i < 10000 * flint_test_multiplier(); i++)
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{
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fmpz_t a, c;
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mpz_t e, f, g;
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ulong n, m;
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fmpz_init(a);
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fmpz_init(c);
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mpz_init(e);
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mpz_init(f);
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mpz_init(g);
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fmpz_randtest(a, state, 200);
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n = n_randtest_not_zero(state);
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m = n_randtest_not_zero(state);
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fmpz_mul_ui(c, a, n);
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fmpz_mul_ui(c, c, m);
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fmpz_get_mpz(e, c);
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fmpz_divexact2_uiui(a, c, n, m);
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flint_mpz_divexact_ui(f, e, n);
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flint_mpz_divexact_ui(f, f, m);
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fmpz_get_mpz(g, a);
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result = (mpz_cmp(f, g) == 0);
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if (!result)
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{
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flint_printf("FAIL:\n");
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gmp_printf("n = %wu, m = %wu, e = %Zd, f = %Zd, g = %Zd\n",
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n, m, e, f, g);
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abort();
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}
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fmpz_clear(a);
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fmpz_clear(c);
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mpz_clear(e);
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mpz_clear(f);
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mpz_clear(g);
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}
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/* Test aliasing of a and c */
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for (i = 0; i < 10000 * flint_test_multiplier(); i++)
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{
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fmpz_t a, c;
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mpz_t d, f, g;
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ulong n, m;
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fmpz_init(a);
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fmpz_init(c);
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mpz_init(d);
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mpz_init(f);
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mpz_init(g);
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fmpz_randtest(a, state, 200);
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n = n_randtest_not_zero(state);
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m = n_randtest_not_zero(state);
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fmpz_mul_ui(c, a, n);
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fmpz_mul_ui(c, c, m);
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fmpz_get_mpz(d, c);
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fmpz_divexact2_uiui(c, c, n, m);
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flint_mpz_divexact_ui(f, d, n);
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flint_mpz_divexact_ui(f, f, m);
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fmpz_get_mpz(g, c);
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result = (mpz_cmp(f, g) == 0);
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if (!result)
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{
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flint_printf("FAIL:\n");
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gmp_printf("d = %Zd, n = %wu, m = %wu, f = %Zd, g = %Zd\n",
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d, n, m, f, g);
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abort();
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}
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fmpz_clear(a);
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fmpz_clear(c);
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mpz_clear(d);
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mpz_clear(f);
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mpz_clear(g);
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}
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FLINT_TEST_CLEANUP(state);
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flint_printf("PASS\n");
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return 0;
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}
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