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/* Test file for mpfr_init2, mpfr_inits, mpfr_inits2 and mpfr_clears.
Copyright 2003, 2006-2025 Free Software Foundation, Inc.
Contributed by the Pascaline 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/>. */
#include "mpfr-test.h"
int
main (void)
{
mpfr_t a, b, c;
long large_prec;
tests_start_mpfr ();
mpfr_inits (a, b, c, (mpfr_ptr) 0);
mpfr_clears (a, b, c, (mpfr_ptr) 0);
mpfr_inits2 (200, a, b, c, (mpfr_ptr) 0);
mpfr_clears (a, b, c, (mpfr_ptr) 0);
/* test for precision 2^31-1, see
https://gforge.inria.fr/tracker/index.php?func=detail&aid=13918 */
large_prec = 2147483647;
if (getenv ("MPFR_CHECK_LARGEMEM") != NULL)
{
size_t min_memory_limit;
/* We assume that the precision won't be increased internally. */
if (large_prec > MPFR_PREC_MAX)
large_prec = MPFR_PREC_MAX;
/* Increase tests_memory_limit if need be in order to avoid an
obvious failure due to insufficient memory, by choosing a bit
more than the memory used for the variables a and b. Note
that such an increase is necessary, but is not guaranteed to
be sufficient in all cases (e.g. with logging activated). */
min_memory_limit = 2 * (large_prec / MPFR_BYTES_PER_MP_LIMB) + 65536;
if (tests_memory_limit > 0 && tests_memory_limit < min_memory_limit)
tests_memory_limit = min_memory_limit;
mpfr_inits2 (large_prec, a, b, (mpfr_ptr) 0);
mpfr_set_ui (a, 17, MPFR_RNDN);
mpfr_set (b, a, MPFR_RNDN);
if (mpfr_get_ui (a, MPFR_RNDN) != 17)
{
printf ("Error in mpfr_init2 with precision 2^31-1\n");
exit (1);
}
mpfr_clears (a, b, (mpfr_ptr) 0);
}
tests_end_mpfr ();
return 0;
}
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