pqc/external/flint-2.4.3/fmpz_vec/test/t-height_index.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) 2009 William Hart
Copyright (C) 2012 Fredrik Johansson
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "fmpz.h"
#include "fmpz_vec.h"
#include "ulong_extras.h"
static slong
refimpl(const fmpz * v, slong len)
{
slong i, max = 0;
for (i = 1; i < len; i++)
if (fmpz_cmpabs(v + i, v + max) > 0)
max = i;
return max;
}
int
main(void)
{
int i, result;
FLINT_TEST_INIT(state);
flint_printf("height_index....");
fflush(stdout);
for (i = 0; i < 1000 * flint_test_multiplier(); i++)
{
fmpz *a;
slong len, bits, p1, p2;
len = 1 + n_randint(state, 100);
a = _fmpz_vec_init(len);
bits = n_randint(state, 200);
_fmpz_vec_randtest(a, state, len, bits);
p1 = _fmpz_vec_height_index(a, len);
p2 = refimpl(a, len);
result = (p1 == p2);
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("bits = %wd, p1 = %wd, p2 = %wd\n", bits, p1, p2);
abort();
}
_fmpz_vec_clear(a, len);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}