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/* Test file for mpfr_set_si and mpfr_set_ui.
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"
/* FIXME: Comparing against mpfr_get_si/ui is not ideal, it'd be better to
have all tests examine the bits in mpfr_t for what should come out. */
int
main (int argc, char *argv[])
{
mpfr_t x;
long k, z, d, N;
unsigned long zl, dl;
int inex;
mp_rnd_t r;
tests_start_mpfr ();
mpfr_init2 (x, 100);
N = (argc==1) ? 200000 : atol (argv[1]);
for (k = 1; k <= N; k++)
{
z = (long) (randlimb () & LONG_MAX) + LONG_MIN / 2;
inex = mpfr_set_si (x, z, GMP_RNDZ);
d = mpfr_get_si (x, GMP_RNDZ);
if (d != z)
{
printf ("Error in mpfr_set_si: expected %ld got %ld\n", z, d);
exit (1);
}
if (inex)
{
printf ("Error in mpfr_set_si: inex value incorrect for %ld: %d\n",
z, inex);
exit (1);
}
}
for (k = 1; k <= N; k++)
{
zl = randlimb ();
inex = mpfr_set_ui (x, zl, GMP_RNDZ);
dl = mpfr_get_ui (x, GMP_RNDZ);
if (dl != zl)
{
printf ("Error in mpfr_set_ui: expected %lu got %lu\n", zl, dl);
exit (1);
}
if (inex)
{
printf ("Error in mpfr_set_ui: inex value incorrect for %lu: %d\n",
zl, inex);
exit (1);
}
}
mpfr_set_prec (x, 2);
if (mpfr_set_si (x, 5, GMP_RNDZ) >= 0)
{
printf ("Wrong inexact flag for x=5, rnd=GMP_RNDZ\n");
exit (1);
}
mpfr_set_prec (x, 2);
if (mpfr_set_si (x, -5, GMP_RNDZ) <= 0)
{
printf ("Wrong inexact flag for x=-5, rnd=GMP_RNDZ\n");
exit (1);
}
mpfr_set_prec (x, 3);
inex = mpfr_set_si (x, 77617, GMP_RNDD); /* should be 65536 */
if (MPFR_MANT(x)[0] != ((mp_limb_t)1 << (mp_bits_per_limb-1))
|| inex >= 0)
{
printf ("Error in mpfr_set_si(x:3, 77617, GMP_RNDD)\n");
mpfr_print_binary (x);
puts ("");
exit (1);
}
inex = mpfr_set_ui (x, 77617, GMP_RNDD); /* should be 65536 */
if (MPFR_MANT(x)[0] != ((mp_limb_t)1 << (mp_bits_per_limb-1))
|| inex >= 0)
{
printf ("Error in mpfr_set_ui(x:3, 77617, GMP_RNDD)\n");
mpfr_print_binary (x);
puts ("");
exit (1);
}
mpfr_set_prec (x, 2);
inex = mpfr_set_si (x, 33096, GMP_RNDU);
if (mpfr_get_si (x, GMP_RNDZ) != 49152 || inex <= 0)
{
printf ("Error in mpfr_set_si, exp. 49152, got %ld, inex %d\n",
mpfr_get_si (x, GMP_RNDZ), inex);
exit (1);
}
inex = mpfr_set_ui (x, 33096, GMP_RNDU);
if (mpfr_get_si (x, GMP_RNDZ) != 49152)
{
printf ("Error in mpfr_set_ui, exp. 49152, got %ld, inex %d\n",
mpfr_get_si (x, GMP_RNDZ), inex);
exit (1);
}
for(r = 0 ; r < GMP_RND_MAX ; r++)
{
mpfr_set_si (x, -1, r);
mpfr_set_ui (x, 0, r);
if (MPFR_IS_NEG (x) )
{
printf ("mpfr_set_ui (x, 0) gives -0 for %s\n",
mpfr_print_rnd_mode(r));
exit (1);
}
mpfr_set_si (x, -1, r);
mpfr_set_si (x, 0, r);
if (MPFR_IS_NEG (x) )
{
printf ("mpfr_set_si (x, 0) gives -0 for %s\n",
mpfr_print_rnd_mode(r) );
exit (1);
}
}
/* check potential bug in case mp_limb_t is unsigned */
mpfr_set_emax (0);
mpfr_set_si (x, -1, GMP_RNDN);
if (mpfr_sgn (x) >= 0)
{
printf ("mpfr_set_si (x, -1) fails\n");
exit (1);
}
mpfr_set_emax (5);
mpfr_set_prec (x, 2);
mpfr_set_si (x, -31, GMP_RNDN);
if (mpfr_sgn (x) >= 0)
{
printf ("mpfr_set_si (x, -31) fails\n");
exit (1);
}
mpfr_clear (x);
tests_end_mpfr ();
return 0;
}
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