/* Test file for mpfr_set.
Copyright 2001-2017 Free Software Foundation, Inc.
Contributed by the AriC and Caramba projects, INRIA.
This file is part of the GNU MPFR Library.
The GNU 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 3 of the License, or (at your
option) any later version.
The GNU 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 GNU MPFR Library; see the file COPYING.LESSER. If not, see
http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
#include <stdio.h>
#include <stdlib.h>
#include "mpfr-test.h"
int error;
#define PRINT_ERROR_IF(condition, text) \
do { \
if (condition) \
{ \
printf ("%s", text); \
error = 1; \
} \
} while (0)
/* Maybe better create its own test file ? */
static void
check_neg_special (void)
{
mpfr_t x;
mpfr_init (x);
MPFR_SET_NAN (x);
mpfr_clear_nanflag ();
mpfr_neg (x, x, MPFR_RNDN);
PRINT_ERROR_IF (!mpfr_nanflag_p (),
"ERROR: neg (NaN) doesn't set Nan flag.\n");
mpfr_clear (x);
}
static void
check_special (void)
{
mpfr_t x, y;
int inexact;
mpfr_init (x);
mpfr_init (y);
mpfr_set_inf (x, 1);
PRINT_ERROR_IF (!mpfr_inf_p (x) || mpfr_sgn (x) < 0,
"ERROR: mpfr_set_inf failed to set variable to +infinity.\n");
inexact = mpfr_set (y, x, MPFR_RNDN);
PRINT_ERROR_IF (!mpfr_inf_p (y) || mpfr_sgn (y) < 0 || inexact != 0,
"ERROR: mpfr_set failed to set variable to +infinity.\n");
inexact = mpfr_set_ui (y, 0, MPFR_RNDN);
PRINT_ERROR_IF (!mpfr_zero_p (y) || mpfr_sgn (y) < 0 || inexact != 0,
"ERROR: mpfr_set_ui failed to set variable to +0.\n");
mpfr_set_inf (x, -1);
PRINT_ERROR_IF (!mpfr_inf_p (x) || mpfr_sgn (x) > 0,
"ERROR: mpfr_set_inf failed to set variable to -infinity.\n");
inexact = mpfr_set (y, x, MPFR_RNDN);
PRINT_ERROR_IF (!mpfr_inf_p (y) || mpfr_sgn (y) > 0 || inexact != 0,
"ERROR: mpfr_set failed to set variable to -infinity.\n");
mpfr_set_zero (x, 1);
PRINT_ERROR_IF (!mpfr_zero_p (x) || mpfr_sgn (x) < 0,
"ERROR: mpfr_set_zero failed to set variable to +0.\n");
inexact = mpfr_set (y, x, MPFR_RNDN);
PRINT_ERROR_IF (!mpfr_zero_p (y) || mpfr_sgn (y) < 0 || inexact != 0,
"ERROR: mpfr_set failed to set variable to +0.\n");
mpfr_set_zero (x, -1);
PRINT_ERROR_IF (!mpfr_zero_p (x) || mpfr_sgn (x) > 0,
"ERROR: mpfr_set_zero failed to set variable to -0.\n");
inexact = mpfr_set (y, x, MPFR_RNDN);
PRINT_ERROR_IF (!mpfr_zero_p (y) || mpfr_sgn (y) > 0 || inexact != 0,
"ERROR: mpfr_set failed to set variable to -0.\n");
mpfr_set_nan (x);
PRINT_ERROR_IF (!mpfr_nan_p (x),
"ERROR: mpfr_set_nan failed to set variable to NaN.\n");
inexact = mpfr_set (y, x, MPFR_RNDN);
PRINT_ERROR_IF (!mpfr_nan_p (y) || inexact != 0,
"ERROR: mpfr_set failed to set variable to NaN.\n");
mpfr_clear (x);
mpfr_clear (y);
}
static void
check_ternary_value (void)
{
int p, q, rnd;
int inexact, cmp;
mpfr_t x, y;
mpfr_init (x);
mpfr_init (y);
for (p=2; p<500; p++)
{
mpfr_set_prec (x, p);
mpfr_urandomb (x, RANDS);
if (randlimb () % 2)
mpfr_neg (x, x, MPFR_RNDN);
for (q=2; q<2*p; q++)
{
mpfr_set_prec (y, q);
for (rnd = 0; rnd < MPFR_RND_MAX; rnd++)
{
inexact = mpfr_set (y, x, (mpfr_rnd_t) rnd);
cmp = mpfr_cmp (y, x);
if (((inexact == 0) && (cmp != 0)) ||
((inexact > 0) && (cmp <= 0)) ||
((inexact < 0) && (cmp >= 0)))
{
printf ("Wrong ternary value in mpfr_set: expected %d,"
" got %d\n", cmp, inexact);
exit (1);
}
}
}
}
mpfr_clear (x);
mpfr_clear (y);
}
#define TEST_FUNCTION mpfr_set
#include "tgeneric.c"
int
main (void)
{
mpfr_t x, y, z, u;
int inexact;
mpfr_exp_t emax;
tests_start_mpfr ();
/* Default : no error */
error = 0;
/* check prototypes of mpfr_init_set_* */
inexact = mpfr_init_set_si (x, -1, MPFR_RNDN);
MPFR_ASSERTN (inexact == 0);
inexact = mpfr_init_set (y, x, MPFR_RNDN);
MPFR_ASSERTN (inexact == 0);
inexact = mpfr_init_set_ui (z, 1, MPFR_RNDN);
MPFR_ASSERTN (inexact == 0);
inexact = mpfr_init_set_d (u, 1.0, MPFR_RNDN);
MPFR_ASSERTN (inexact == 0);
emax = mpfr_get_emax ();
set_emax (0);
mpfr_set_prec (x, 3);
mpfr_set_str_binary (x, "0.111");
mpfr_set_prec (y, 2);
mpfr_set (y, x, MPFR_RNDU);
if (!(MPFR_IS_INF (y) && MPFR_SIGN (y) > 0))
{
printf ("Error for y=x=0.111 with px=3, py=2 and emax=0\nx=");
mpfr_dump (x);
printf ("y=");
mpfr_dump (y);
exit (1);
}
set_emax (emax);
mpfr_set_prec (y, 11);
mpfr_set_str_binary (y, "0.11111111100E-8");
mpfr_set_prec (x, 2);
mpfr_set (x, y, MPFR_RNDN);
mpfr_set_str_binary (y, "1.0E-8");
if (mpfr_cmp (x, y))
{
printf ("Error for y=0.11111111100E-8, prec=2, rnd=MPFR_RNDN\n");
exit (1);
}
mpfr_clear (x);
mpfr_clear (y);
mpfr_clear (z);
mpfr_clear (u);
check_ternary_value ();
check_special ();
check_neg_special ();
test_generic (2, 1000, 10);
tests_end_mpfr ();
return error;
}