pqc/external/flint-2.4.3/fmpq/test/t-get_mpfr.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) 2011 Fredrik Johansson
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include <mpfr.h>
#include "flint.h"
#include "fmpz.h"
#include "fmpq.h"
#include "fmpz_vec.h"
#include "ulong_extras.h"
int
main(void)
{
int i;
FLINT_TEST_INIT(state);
flint_printf("get_mpfr....");
fflush(stdout);
for (i = 0; i < 10000; i++)
{
fmpq_t x; mpq_t y;
mpfr_t f1, f2;
int r1, r2;
mpfr_rnd_t rnd;
fmpq_init(x);
mpq_init(y);
mpfr_init2(f1, 2 + n_randint(state, 1000));
mpfr_init2(f2, mpfr_get_prec(f1));
fmpq_randtest(x, state, 2 + n_randint(state, 1000));
fmpq_get_mpq(y, x);
switch (n_randint(state, 5))
{
case 0: rnd = MPFR_RNDZ; break;
case 1: rnd = MPFR_RNDD; break;
case 2: rnd = MPFR_RNDU; break;
case 3: rnd = MPFR_RNDA; break;
default: rnd = MPFR_RNDN; break;
}
r1 = fmpq_get_mpfr(f1, x, rnd);
r2 = mpfr_set_q(f2, y, rnd);
if (r1 != r2 || !mpfr_equal_p(f1, f2))
{
flint_printf("FAIL\n");
fmpq_print(x); flint_printf("\n");
flint_printf("r1 = %d, r2 = %d\n", r1, r2);
flint_printf("\nf1: \n");
mpfr_out_str(stdout, 10, 0, f1, MPFR_RNDN);
flint_printf("\n\nf1: \n");
mpfr_out_str(stdout, 10, 0, f2, MPFR_RNDN);
flint_printf("\n\n");
abort();
}
fmpq_clear(x);
mpq_clear(y);
mpfr_clear(f1);
mpfr_clear(f2);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}