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/* Test mpf_cmp_d.
Copyright 2001, 2003, 2003, 2005 Free Software Foundation, Inc.
This file is part of the GNU MP Library test suite.
The GNU MP Library test suite 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 3 of the License,
or (at your option) any later version.
The GNU MP Library test suite 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
the GNU MP Library test suite. If not, see https://www.gnu.org/licenses/. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "gmp-impl.h"
#include "tests.h"
#define SGN(n) ((n) > 0 ? 1 : (n) < 0 ? -1 : 0)
void
check_one (const char *name, mpf_srcptr x, double y, int cmp)
{
int got;
got = mpf_cmp_d (x, y);
if (SGN(got) != cmp)
{
int i;
printf ("mpf_cmp_d wrong (from %s)\n", name);
printf (" got %d\n", got);
printf (" want %d\n", cmp);
mpf_trace (" x", x);
printf (" y %g\n", y);
mp_trace_base=-16;
mpf_trace (" x", x);
printf (" y %g\n", y);
printf (" y");
for (i = 0; i < sizeof(y); i++)
printf (" %02X", (unsigned) ((unsigned char *) &y)[i]);
printf ("\n");
abort ();
}
}
void
check_infinity (void)
{
mpf_t x;
double y = tests_infinity_d ();
if (y == 0.0)
return;
mpf_init (x);
/* 0 cmp inf */
mpf_set_ui (x, 0L);
check_one ("check_infinity", x, y, -1);
check_one ("check_infinity", x, -y, 1);
/* 123 cmp inf */
mpf_set_ui (x, 123L);
check_one ("check_infinity", x, y, -1);
check_one ("check_infinity", x, -y, 1);
/* -123 cmp inf */
mpf_set_si (x, -123L);
check_one ("check_infinity", x, y, -1);
check_one ("check_infinity", x, -y, 1);
/* 2^5000 cmp inf */
mpf_set_ui (x, 1L);
mpf_mul_2exp (x, x, 5000L);
check_one ("check_infinity", x, y, -1);
check_one ("check_infinity", x, -y, 1);
/* -2^5000 cmp inf */
mpf_neg (x, x);
check_one ("check_infinity", x, y, -1);
check_one ("check_infinity", x, -y, 1);
mpf_clear (x);
}
int
main (int argc, char *argv[])
{
tests_start ();
check_infinity ();
tests_end ();
exit (0);
}
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