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/* Test file for mpfr_cmpabs and mpfr_cmpabs_ui.
Copyright 2004-2021 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
https://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
#include "mpfr-test.h"
#define PRINT_ERROR(s) do { printf ("Error: %s\n", s); exit (1); } while (0)
static int
cmpabs (mpfr_srcptr x, mpfr_srcptr y)
{
unsigned int i;
int r[4];
mpfr_flags_t f1, f2, flags[2] = { 0, MPFR_FLAGS_ALL };
mpfr_exp_t emin, emax;
emin = mpfr_get_emin ();
emax = mpfr_get_emax ();
for (i = 0; i < 4; i++)
{
if (i & 2)
{
mpfr_exp_t ex = MPFR_IS_SINGULAR (x) ? emax : MPFR_GET_EXP (x);
mpfr_exp_t ey = MPFR_IS_SINGULAR (y) ? emax : MPFR_GET_EXP (y);
set_emin (ex < ey ? ex : ey);
set_emax (ex < ey ? ey : ex);
}
__gmpfr_flags = f1 = flags[i % 2];
r[i] = mpfr_cmpabs (x, y);
f2 = __gmpfr_flags;
if (MPFR_IS_NAN (x) || MPFR_IS_NAN (y))
f1 |= MPFR_FLAGS_ERANGE;
if (i & 2)
{
set_emin (emin);
set_emax (emax);
}
if (f1 != f2)
{
printf ("Flags error in mpfr_cmpabs for i = %u\n x = ", i);
mpfr_dump (x);
printf (" y = ");
mpfr_dump (y);
printf ("Expected flags = ");
flags_out (f1);
printf ("Obtained flags = ");
flags_out (f2);
exit (1);
}
if (i > 0)
MPFR_ASSERTN (r[i] == r[0]);
}
return r[0];
}
static void
test_cmpabs (void)
{
mpfr_t xx, yy;
mpfr_init2 (xx, 2);
mpfr_init2 (yy, 2);
mpfr_clear_erangeflag ();
MPFR_SET_NAN (xx);
MPFR_SET_NAN (yy);
if (cmpabs (xx, yy) != 0)
PRINT_ERROR ("mpfr_cmpabs (NAN,NAN) returns non-zero");
if (!mpfr_erangeflag_p ())
PRINT_ERROR ("mpfr_cmpabs (NAN,NAN) doesn't set erange flag");
mpfr_set_si (yy, -1, MPFR_RNDN);
if (cmpabs (xx, yy) != 0)
PRINT_ERROR ("mpfr_cmpabs (NAN,-1) returns non-zero");
if (cmpabs (yy, xx) != 0)
PRINT_ERROR ("mpfr_cmpabs (-1,NAN) returns non-zero");
mpfr_set_str_binary (xx, "0.10E0");
mpfr_set_str_binary (yy, "-0.10E0");
if (cmpabs (xx, yy) != 0)
PRINT_ERROR ("mpfr_cmpabs (xx, yy) returns non-zero for prec=2");
mpfr_set_prec (xx, 65);
mpfr_set_prec (yy, 65);
mpfr_set_str_binary (xx, "-0.10011010101000110101010000000011001001001110001011101011111011101E623");
mpfr_set_str_binary (yy, "0.10011010101000110101010000000011001001001110001011101011111011100E623");
if (cmpabs (xx, yy) <= 0)
PRINT_ERROR ("Error (1) in mpfr_cmpabs");
mpfr_set_str_binary (xx, "-0.10100010001110110111000010001000010011111101000100011101000011100");
mpfr_set_str_binary (yy, "-0.10100010001110110111000010001000010011111101000100011101000011011");
if (cmpabs (xx, yy) <= 0)
PRINT_ERROR ("Error (2) in mpfr_cmpabs");
mpfr_set_prec (xx, 160);
mpfr_set_prec (yy, 160);
mpfr_set_str_binary (xx, "0.1E1");
mpfr_set_str_binary (yy, "-0.1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111100000110001110100");
if (cmpabs (xx, yy) <= 0)
PRINT_ERROR ("Error (3) in mpfr_cmpabs");
mpfr_set_prec(xx, 53);
mpfr_set_prec(yy, 200);
mpfr_set_ui (xx, 1, (mpfr_rnd_t) 0);
mpfr_set_ui (yy, 1, (mpfr_rnd_t) 0);
if (cmpabs (xx, yy) != 0)
PRINT_ERROR ("Error in mpfr_cmpabs: 1.0 != 1.0");
mpfr_set_prec (yy, 31);
mpfr_set_str (xx, "-1.0000000002", 10, (mpfr_rnd_t) 0);
mpfr_set_ui (yy, 1, (mpfr_rnd_t) 0);
if (cmpabs (xx, yy) <= 0)
PRINT_ERROR ("Error in mpfr_cmpabs: not 1.0000000002 > 1.0");
mpfr_set_prec(yy, 53);
mpfr_set_ui(xx, 0, MPFR_RNDN);
mpfr_set_str (yy, "-0.1", 10, MPFR_RNDN);
if (cmpabs (xx, yy) >= 0)
PRINT_ERROR ("Error in mpfr_cmpabs(0.0, 0.1)");
mpfr_set_inf (xx, -1);
mpfr_set_str (yy, "23489745.0329", 10, MPFR_RNDN);
if (cmpabs (xx, yy) <= 0)
PRINT_ERROR ("Error in mpfr_cmpabs(-Inf, 23489745.0329)");
mpfr_set_inf (xx, 1);
mpfr_set_inf (yy, -1);
if (cmpabs (xx, yy) != 0)
PRINT_ERROR ("Error in mpfr_cmpabs(Inf, -Inf)");
mpfr_set_inf (yy, -1);
mpfr_set_str (xx, "2346.09234", 10, MPFR_RNDN);
if (cmpabs (xx, yy) >= 0)
PRINT_ERROR ("Error in mpfr_cmpabs(-Inf, 2346.09234)");
mpfr_set_prec (xx, 2);
mpfr_set_prec (yy, 128);
mpfr_set_str_binary (xx, "0.1E10");
mpfr_set_str_binary (yy,
"0.100000000000000000000000000000000000000000000000"
"00000000000000000000000000000000000000000000001E10");
if (cmpabs (xx, yy) >= 0)
PRINT_ERROR ("Error in mpfr_cmpabs(10.235, 2346.09234)");
mpfr_swap (xx, yy);
if (cmpabs (xx, yy) <= 0)
PRINT_ERROR ("Error in mpfr_cmpabs(2346.09234, 10.235)");
mpfr_swap (xx, yy);
mpfr_clear (xx);
mpfr_clear (yy);
}
static int
cmpabs_ui (mpfr_srcptr x, unsigned long u)
{
unsigned int i;
int r[4];
mpfr_flags_t f1, f2, flags[2] = { 0, MPFR_FLAGS_ALL };
mpfr_exp_t emin, emax;
emin = mpfr_get_emin ();
emax = mpfr_get_emax ();
for (i = 0; i < 4; i++)
{
if (i & 2)
{
mpfr_exp_t e = MPFR_IS_SINGULAR (x) ? emax : MPFR_GET_EXP (x);
set_emin (e);
set_emax (e);
}
__gmpfr_flags = f1 = flags[i % 2];
r[i] = mpfr_cmpabs_ui (x, u);
f2 = __gmpfr_flags;
if (MPFR_IS_NAN (x))
f1 |= MPFR_FLAGS_ERANGE;
if (i & 2)
{
set_emin (emin);
set_emax (emax);
}
if (f1 != f2)
{
printf ("Flags error in mpfr_cmpabs_ui for i = %u\n x = ", i);
mpfr_dump (x);
printf (" u = %lu\n", u);
printf ("Expected flags = ");
flags_out (f1);
printf ("Obtained flags = ");
flags_out (f2);
exit (1);
}
if (i > 0)
MPFR_ASSERTN (r[i] == r[0]);
}
return r[0];
}
static void
test_cmpabs_ui (void)
{
mpfr_t x;
mpfr_init2 (x, 64); /* should be enough so that ULONG_MAX fits */
/* check NaN */
mpfr_set_nan (x);
if (cmpabs_ui (x, 17) != 0)
PRINT_ERROR ("mpfr_cmpabs_ui (NaN, 17)");
/* check -Inf */
mpfr_set_inf (x, -1);
if (cmpabs_ui (x, 17) <= 0)
PRINT_ERROR ("mpfr_cmpabs_ui (-Inf, 17)");
/* check +Inf */
mpfr_set_inf (x, +1);
if (cmpabs_ui (x, 17) <= 0)
PRINT_ERROR ("mpfr_cmpabs_ui (+Inf, 17)");
/* check -1 */
mpfr_set_si (x, -1, MPFR_RNDN);
if (cmpabs_ui (x, 0) <= 0)
PRINT_ERROR ("mpfr_cmpabs_ui (-1, 0)");
if (cmpabs_ui (x, 17) >= 0)
PRINT_ERROR ("mpfr_cmpabs_ui (-1, 17)");
/* check -0 */
mpfr_set_zero (x, -1);
if (cmpabs_ui (x, 0) != 0)
PRINT_ERROR ("mpfr_cmpabs_ui (-0, 0)");
if (cmpabs_ui (x, 17) >= 0)
PRINT_ERROR ("mpfr_cmpabs_ui (-0, 17)");
/* check +0 */
mpfr_set_zero (x, +1);
if (cmpabs_ui (x, 0) != 0)
PRINT_ERROR ("mpfr_cmpabs_ui (+0, 0)");
if (cmpabs_ui (x, 17) >= 0)
PRINT_ERROR ("mpfr_cmpabs_ui (+0, 17)");
/* check 1 */
mpfr_set_ui (x, 1, MPFR_RNDN);
if (cmpabs_ui (x, 0) <= 0)
PRINT_ERROR ("mpfr_cmpabs_ui (1, 0)");
if (cmpabs_ui (x, 1) != 0)
PRINT_ERROR ("mpfr_cmpabs_ui (1, 1)");
if (cmpabs_ui (x, 17) >= 0)
PRINT_ERROR ("mpfr_cmpabs_ui (1, 17)");
/* check ULONG_MAX */
mpfr_set_ui (x, ULONG_MAX, MPFR_RNDN);
if (cmpabs_ui (x, 0) <= 0)
PRINT_ERROR ("mpfr_cmpabs_ui (ULONG_MAX, 0)");
if (cmpabs_ui (x, 1) <= 0)
PRINT_ERROR ("mpfr_cmpabs_ui (ULONG_MAX, 1)");
if (cmpabs_ui (x, 17) <= 0)
PRINT_ERROR ("mpfr_cmpabs_ui (ULONG_MAX, 17)");
if (cmpabs_ui (x, ULONG_MAX) != 0)
PRINT_ERROR ("mpfr_cmpabs_ui (ULONG_MAX, ULONG_MAX)");
mpfr_clear (x);
}
int
main (void)
{
tests_start_mpfr ();
test_cmpabs ();
test_cmpabs_ui ();
tests_end_mpfr ();
return 0;
}
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