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/* tis_zero.c -- Test mpfi_is_zero.
Copyright 2010,
Spaces project, Inria Lorraine
and Salsa project, INRIA Rocquencourt,
and Arenaire project, Inria Rhone-Alpes, France
and Lab. ANO, USTL (Univ. of Lille), France
This file is part of the MPFI Library.
The MPFI 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 MPFI 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 MPFI Library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
MA 02110-1301, USA. */
#include "mpfi-tests.h"
extern int nextchar;
void
print_error (mpfi_srcptr a)
{
printf ("Error: mpfi_is_zero (A) returns %d\nA = ",
mpfi_is_zero (a));
mpfi_out_str (stdout, 10, 0, a);
printf ("\n");
exit (1);
}
int
main (int argc, char **argv)
{
mpfr_t x;
mpfi_t interval;
mp_prec_t p;
test_start ();
mpfr_init2 (x, 1024);
mpfi_init2 (interval, 1024);
mpfi_set_ui (interval, 0);
if (!mpfi_is_zero (interval)) {
print_error (interval);
}
for (p = 2; p < 1024; ++p) {
mpfr_set_prec (x, p);
mpfi_set_prec (interval, p);
random_mpfr (x);
mpfi_set_fr (interval, x);
if (mpfi_is_zero (interval) && !mpfr_zero_p (x)) {
print_error (interval);
}
random_mpfr (x);
if (mpfr_zero_p (x))
mpfr_nextabove (x);
/* x != 0*/
mpfi_put_fr (interval, x);
if (mpfi_is_zero (interval)) {
print_error (interval);
}
mpfr_set_nan (&(interval->left));
if (mpfi_is_zero (interval)) {
print_error (interval);
}
}
mpfr_clear (x);
mpfi_clear (interval);
test_end ();
return 0;
}
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