pqc/external/flint-2.4.3/arith/test/t-pi_chudnovsky.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) 2010 Fredrik Johansson
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include "flint.h"
#include "arith.h"
#include "ulong_extras.h"
int main(void)
{
slong k;
FLINT_TEST_INIT(state);
flint_printf("pi_chudnovsky....");
fflush(stdout);
for (k = 2; k < 20; k++)
{
mpfr_t x, y;
mpfr_init2(x, WORD(1) << k);
mpfr_init2(y, WORD(1) << k);
mpfr_const_pi(x, MPFR_RNDN);
mpfr_pi_chudnovsky(y, MPFR_RNDN);
if (!mpfr_equal_p(x, y))
{
flint_printf("FAIL:\n");
flint_printf("Wrong value at prec = %wd\n", WORD(1) << k);
abort();
}
mpfr_clear(x);
mpfr_clear(y);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}