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/* Test file for mpfr_set_f.
Copyright 1999, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of the MPFR Library.
The MPFR Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version.
The MPFR Library 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the MPFR Library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA. */
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "mpfr-test.h"
int
main (void)
{
mpfr_t x, u;
mpf_t y, z;
unsigned long k, pr;
int r, inexact;
tests_start_mpfr ();
mpf_init(y);
mpf_init(z);
mpf_set_d (y, 0.0);
/* check prototype of mpfr_init_set_f */
mpfr_init_set_f (x, y, GMP_RNDN);
mpfr_set_prec (x, 100);
mpfr_set_f (x, y, GMP_RNDN);
mpf_random2(y, 10, 0);
mpfr_set_f(x, y, randlimb () & 3);
/* bug found by Jean-Pierre Merlet */
mpfr_set_prec(x, 256);
mpf_set_prec(y, 256);
mpfr_init2(u, 256);
mpfr_set_str(u,
"7.f10872b020c49ba5e353f7ced916872b020c49ba5e353f7ced916872b020c498@2",
16, GMP_RNDN);
mpf_set_str(y, "2033.033", 10);
mpfr_set_f(x, y, GMP_RNDN);
if (mpfr_cmp(x, u))
{
printf ("mpfr_set_f failed for y=2033.033\n");
exit (1);
}
mpf_set_str(y, "-2033.033", 10);
mpfr_set_f(x, y, GMP_RNDN);
mpfr_neg(u, u, GMP_RNDN);
if (mpfr_cmp(x, u))
{
printf ("mpfr_set_f failed for y=-2033.033\n");
exit (1);
}
mpfr_clear(u);
for (k = 1; k <= 100000; k++)
{
pr = 2 + (randlimb () & 255);
mpf_set_prec (z, pr);
mpf_random2 (z, z->_mp_prec, 0);
mpfr_set_prec (x, pr);
mpfr_set_f (x, z, 0);
}
/* Check for +0 */
mpfr_set_prec(x, 53);
mpf_set_prec(y, 53);
mpf_set_ui(y, 0);
for(r = 0 ; r < 4 ; r++)
{
inexact = mpfr_set_f(x, y, r);
if (!MPFR_IS_ZERO(x) || !MPFR_IS_POS(x) || inexact)
{
printf("mpfr_set_f(x,0) failed for %s\n",
mpfr_print_rnd_mode(r));
exit(1);
}
}
mpfr_clear (x);
mpf_clear (y);
mpf_clear (z);
tests_end_mpfr ();
return 0;
}
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