1 /* Test file for mpfr_init2, mpfr_inits, mpfr_inits2 and mpfr_clears.
2
3 Copyright 2003, 2006-2023 Free Software Foundation, Inc.
4 Contributed by the AriC and Caramba projects, INRIA.
5
6 This file is part of the GNU MPFR Library.
7
8 The GNU MPFR Library is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or (at your
11 option) any later version.
12
13 The GNU MPFR Library is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
16 License for more details.
17
18 You should have received a copy of the GNU Lesser General Public License
19 along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see
20 https://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
21 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
22
23 #include "mpfr-test.h"
24
25 int
main(void)26 main (void)
27 {
28 mpfr_t a, b, c;
29 long large_prec;
30
31 tests_start_mpfr ();
32
33 mpfr_inits (a, b, c, (mpfr_ptr) 0);
34 mpfr_clears (a, b, c, (mpfr_ptr) 0);
35 mpfr_inits2 (200, a, b, c, (mpfr_ptr) 0);
36 mpfr_clears (a, b, c, (mpfr_ptr) 0);
37
38 /* test for precision 2^31-1, see
39 https://gforge.inria.fr/tracker/index.php?func=detail&aid=13918 */
40 large_prec = 2147483647;
41 if (getenv ("MPFR_CHECK_LARGEMEM") != NULL)
42 {
43 size_t min_memory_limit;
44
45 /* We assume that the precision won't be increased internally. */
46 if (large_prec > MPFR_PREC_MAX)
47 large_prec = MPFR_PREC_MAX;
48
49 /* Increase tests_memory_limit if need be in order to avoid an
50 obvious failure due to insufficient memory, by choosing a bit
51 more than the memory used for the variables a and b. Note
52 that such an increase is necessary, but is not guaranteed to
53 be sufficient in all cases (e.g. with logging activated). */
54 min_memory_limit = 2 * (large_prec / MPFR_BYTES_PER_MP_LIMB) + 65536;
55 if (tests_memory_limit > 0 && tests_memory_limit < min_memory_limit)
56 tests_memory_limit = min_memory_limit;
57
58 mpfr_inits2 (large_prec, a, b, (mpfr_ptr) 0);
59 mpfr_set_ui (a, 17, MPFR_RNDN);
60 mpfr_set (b, a, MPFR_RNDN);
61 if (mpfr_get_ui (a, MPFR_RNDN) != 17)
62 {
63 printf ("Error in mpfr_init2 with precision 2^31-1\n");
64 exit (1);
65 }
66 mpfr_clears (a, b, (mpfr_ptr) 0);
67 }
68
69 tests_end_mpfr ();
70
71 return 0;
72 }
73