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/*
Copyright (C) 2009 William Hart
Copyright (C) 2010 Sebastian Pancratz
Copyright (C) 2011 Fredrik Johansson
This file is part of FLINT.
FLINT is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version. See <https://www.gnu.org/licenses/>.
*/
#include "test_helpers.h"
#include "fmpz.h"
#include "fmpz_vec.h"
TEST_FUNCTION_START(fmpz_vec_lcm, state)
{
int i, result;
/* Check that lcm(a f) = abs(a) lcm(f) */
for (i = 0; i < 1000 * flint_test_multiplier(); i++)
{
fmpz_t a, c, d;
fmpz *f;
slong len = n_randint(state, 100);
fmpz_init(a);
fmpz_init(c);
fmpz_init(d);
f = _fmpz_vec_init(len);
_fmpz_vec_randtest(f, state, len, 200);
fmpz_randtest(a, state, 100);
_fmpz_vec_lcm(c, f, len);
if (len == 0)
{
result = fmpz_is_one(c);
}
else
{
_fmpz_vec_scalar_mul_fmpz(f, f, len, a);
fmpz_abs(a, a);
fmpz_mul(c, a, c);
_fmpz_vec_lcm(d, f, len);
result = (fmpz_equal(c, d));
}
if (!result)
{
fmpz_print(c), flint_printf("\n\n");
fmpz_print(d), flint_printf("\n\n");
fflush(stdout);
flint_abort();
}
fmpz_clear(a);
fmpz_clear(c);
fmpz_clear(d);
_fmpz_vec_clear(f, len);
}
TEST_FUNCTION_END(state);
}