pqc/external/flint-2.4.3/test/t-sdiv_qrnnd.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
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <gmp.h>
#include "flint.h"
#include "ulong_extras.h"
int main(void)
{
int i, result;
FLINT_TEST_INIT(state);
flint_printf("sdiv_qrnnd....");
fflush(stdout);
for (i = 0; i < 1000000; i++)
{
mp_limb_signed_t d, nh, nl, q, r, ph, pl;
do
{
d = n_randtest_not_zero(state);
nh = n_randtest(state);
} while ((FLINT_ABS(nh) >= FLINT_ABS(d)/2) || (nh == WORD_MIN));
nl = n_randtest(state);
sdiv_qrnnd(q, r, nh, nl, d);
smul_ppmm(ph, pl, d, q);
if (r < WORD(0)) sub_ddmmss(ph, pl, ph, pl, UWORD(0), -r);
else add_ssaaaa(ph, pl, ph, pl, UWORD(0), r);
result = ((ph == nh) && (pl == nl));
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("nh = %wu, nl = %wu, d = %wu\n", nh, nl, d);
flint_printf("ph = %wu, pl = %wu\n", ph, pl);
abort();
}
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}