1/* tpow -- test file for mpc_pow.
2
3Copyright (C) 2009, 2011 INRIA
4
5This file is part of GNU MPC.
6
7GNU MPC is free software; you can redistribute it and/or modify it under
8the terms of the GNU Lesser General Public License as published by the
9Free Software Foundation; either version 3 of the License, or (at your
10option) any later version.
11
12GNU MPC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
14FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
15more details.
16
17You should have received a copy of the GNU Lesser General Public License
18along with this program. If not, see http://www.gnu.org/licenses/ .
19*/
20
21#include "mpc-tests.h"
22
23static void
24reuse_bug (void)
25{
26   /* bug found by the automatic builds on
27      http://hydra.nixos.org/build/1469029/log/raw */
28   mpc_t x, y, z;
29   mp_prec_t prec = 2;
30
31   for (prec = 2; prec <= 20; prec ++)
32     {
33       mpc_init2 (x, prec);
34       mpc_init2 (y, prec);
35       mpc_init2 (z, prec);
36
37       mpfr_set_ui (mpc_realref (x), 0ul, GMP_RNDN);
38       mpfr_set_ui_2exp (mpc_imagref (x), 3ul, -2, GMP_RNDN);
39       mpc_set_ui (y, 8ul, MPC_RNDNN);
40
41       mpc_pow (z, x, y, MPC_RNDNN);
42       mpc_pow (y, x, y, MPC_RNDNN);
43       if (mpfr_signbit (mpc_imagref (y)) != mpfr_signbit (mpc_imagref (z)))
44         {
45           printf ("Error: regression, reuse_bug reproduced\n");
46           exit (1);
47         }
48
49       mpc_clear (x);
50       mpc_clear (y);
51       mpc_clear (z);
52     }
53}
54
55
56int
57main (void)
58{
59  DECL_FUNC (C_CC, f, mpc_pow);
60
61  test_start ();
62
63  reuse_bug ();
64
65  data_check (f, "pow.dat");
66  tgeneric (f, 2, 1024, 7, 10);
67
68  test_end ();
69
70  return 0;
71}
72