1/* Test file for mpfr_set_exp.
2
3Copyright 2004, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
4Contributed by the Arenaire and Cacao projects, INRIA.
5
6This file is part of the GNU MPFR Library.
7
8The GNU MPFR Library is free software; you can redistribute it and/or modify
9it under the terms of the GNU Lesser General Public License as published by
10the Free Software Foundation; either version 3 of the License, or (at your
11option) any later version.
12
13The GNU MPFR Library is distributed in the hope that it will be useful, but
14WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
16License for more details.
17
18You should have received a copy of the GNU Lesser General Public License
19along with the GNU MPFR Library; see the file COPYING.LESSER.  If not, see
20http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
2151 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
22
23#include <stdio.h>
24#include <stdlib.h>
25
26#include "mpfr-test.h"
27
28int
29main (int argc, char *argv[])
30{
31  mpfr_t x;
32  int ret;
33  mpfr_exp_t emin, emax;
34
35  tests_start_mpfr ();
36
37  emin = mpfr_get_emin ();
38  emax = mpfr_get_emax ();
39
40  mpfr_init (x);
41
42  mpfr_set_ui (x, 1, MPFR_RNDN);
43  ret = mpfr_set_exp (x, 2);
44  MPFR_ASSERTN(ret == 0 && mpfr_cmp_ui (x, 2) == 0);
45
46  set_emin (-1);
47  ret = mpfr_set_exp (x, -1);
48  MPFR_ASSERTN(ret == 0 && mpfr_cmp_ui_2exp (x, 1, -2) == 0);
49
50  set_emax (1);
51  ret = mpfr_set_exp (x, 1);
52  MPFR_ASSERTN(ret == 0 && mpfr_cmp_ui (x, 1) == 0);
53
54  ret = mpfr_set_exp (x, -2);
55  MPFR_ASSERTN(ret != 0 && mpfr_cmp_ui (x, 1) == 0);
56
57  ret = mpfr_set_exp (x, 2);
58  MPFR_ASSERTN(ret != 0 && mpfr_cmp_ui (x, 1) == 0);
59
60  mpfr_clear (x);
61
62  set_emin (emin);
63  set_emax (emax);
64
65  tests_end_mpfr ();
66  return 0;
67}
68