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/* Test file for mpfr_out_str.
Copyright 1999, 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 <float.h>
#include <stdlib.h>
#include "mpfr-test.h"
FILE *fout;
#define check(d,r,b) check4(d,r,b,53)
static void
check4 (double d, mpfr_rnd_t rnd, int base, int prec)
{
mpfr_t x;
mpfr_init2 (x, prec);
mpfr_set_d (x, d, rnd);
fprintf (fout, "%1.19e base %d rnd %d:\n ", d, base, rnd);
mpfr_out_str (fout, base, (base == 2) ? prec : 0, x, rnd);
fputc ('\n', fout);
mpfr_clear (x);
}
static void
special (void)
{
mpfr_t x;
unsigned int n;
mpfr_init (x);
mpfr_set_nan (x);
n = mpfr_out_str (fout, 10, 0, x, MPFR_RNDN);
if (n != 5)
{
printf ("Error: mpfr_out_str (file, 10, 0, NaN, MPFR_RNDN) wrote %u "
"characters instead of 5.\n", n);
exit (1);
}
mpfr_set_inf (x, 1);
n = mpfr_out_str (fout, 10, 0, x, MPFR_RNDN);
if (n != 5)
{
printf ("Error: mpfr_out_str (file, 10, 0, +Inf, MPFR_RNDN) wrote %u "
"characters instead of 5.\n", n);
exit (1);
}
mpfr_set_inf (x, -1);
n = mpfr_out_str (fout, 10, 0, x, MPFR_RNDN);
if (n != 6)
{
printf ("Error: mpfr_out_str (file, 10, 0, -Inf, MPFR_RNDN) wrote %u "
"characters instead of 6.\n", n);
exit (1);
}
mpfr_set_ui (x, 0, MPFR_RNDN);
n = mpfr_out_str (fout, 10, 0, x, MPFR_RNDN);
if (n != 1)
{
printf ("Error: mpfr_out_str (file, 10, 0, +0, MPFR_RNDN) wrote %u "
"characters instead of 1.\n", n);
exit (1);
}
mpfr_neg (x, x, MPFR_RNDN);
n = mpfr_out_str (fout, 10, 0, x, MPFR_RNDN);
if (n != 2)
{
printf ("Error: mpfr_out_str (file, 10, 0, -0, MPFR_RNDN) wrote %u "
"characters instead of 2.\n", n);
exit (1);
}
mpfr_clear (x);
}
int
main (int argc, char *argv[])
{
int i, N=10000, p;
mpfr_rnd_t rnd;
double d;
tests_start_mpfr ();
/* with no argument: prints to /dev/null,
tout_str N: prints N tests to stdout */
if (argc == 1)
{
fout = fopen ("/dev/null", "w");
/* If we failed to open this device, try with a dummy file */
if (fout == NULL)
fout = fopen ("tout_str_out.txt", "w");
}
else
{
fout = stdout;
N = atoi (argv[1]);
}
if (fout == NULL)
{
printf ("Can't open /dev/null or stdout\n");
exit (1);
}
special ();
check (-1.37247529013405550000e+15, MPFR_RNDN, 7);
check (-1.5674376729569697500e+15, MPFR_RNDN, 19);
check (-5.71262771772792640000e-79, MPFR_RNDU, 16);
check (DBL_NEG_ZERO, MPFR_RNDU, 7);
check (-4.5306392613572974756e-308, MPFR_RNDN, 8);
check (-6.7265890111403371523e-165, MPFR_RNDN, 4);
check (-1.3242553591261807653e+156, MPFR_RNDN, 16);
check (-6.606499965302424244461355e233, MPFR_RNDN, 10);
check4 (1.0, MPFR_RNDN, 10, 120);
check (1.0, MPFR_RNDU, 10);
check (4.059650008e-83, MPFR_RNDN, 10);
check (-7.4, MPFR_RNDN, 10);
check (0.997, MPFR_RNDN, 10);
check (-4.53063926135729747564e-308, MPFR_RNDN, 10);
check (2.14478198760196000000e+16, MPFR_RNDN, 10);
check (7.02293374921793516813e-84, MPFR_RNDN, 10);
/* random tests */
for (i=0;i<N;i++)
{
do
{
d = DBL_RAND ();
}
#ifdef HAVE_DENORMS
while (0);
#else
while (ABS(d) < DBL_MIN);
#endif
rnd = RND_RAND ();
p = 2 + randlimb () % 61;
check (d, rnd, p);
}
fclose (fout);
tests_end_mpfr ();
return 0;
}
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