94 lines
2.4 KiB
C
94 lines
2.4 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 "fmpz.h"
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#include "fmpz_vec.h"
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#include "ulong_extras.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("lcm....");
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fflush(stdout);
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/* Check that lcm(a f) = abs(a) lcm(f) */
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for (i = 0; i < 1000 * flint_test_multiplier(); i++)
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{
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fmpz_t a, c, d;
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fmpz *f;
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slong len = n_randint(state, 100);
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fmpz_init(a);
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fmpz_init(c);
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fmpz_init(d);
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f = _fmpz_vec_init(len);
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_fmpz_vec_randtest(f, state, len, 200);
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fmpz_randtest(a, state, 100);
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_fmpz_vec_lcm(c, f, len);
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if (len == 0)
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{
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result = fmpz_is_one(c);
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}
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else
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{
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_fmpz_vec_scalar_mul_fmpz(f, f, len, a);
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fmpz_abs(a, a);
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fmpz_mul(c, a, c);
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_fmpz_vec_lcm(d, f, len);
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result = (fmpz_equal(c, d));
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}
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if (!result)
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{
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fmpz_print(c), flint_printf("\n\n");
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fmpz_print(d), flint_printf("\n\n");
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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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fmpz_clear(d);
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_fmpz_vec_clear(f, len);
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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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