1 /* Test file for mpfr_log2.
3 Copyright 2001, 2002, 2004, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
4 Contributed by the AriC and Caramel projects, INRIA.
6 This file is part of the GNU MPFR Library.
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.
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.
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 http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
21 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
26 #include "mpfr-test.h"
28 #define TEST_FUNCTION mpfr_log2
29 #define TEST_RANDOM_POS 8
41 inex = mpfr_log2 (x, x, MPFR_RNDN);
42 MPFR_ASSERTN (mpfr_nan_p (x) && inex == 0);
45 inex = mpfr_log2 (x, x, MPFR_RNDN);
46 MPFR_ASSERTN (mpfr_nan_p (x) && inex == 0);
49 inex = mpfr_log2 (x, x, MPFR_RNDN);
50 MPFR_ASSERTN (mpfr_inf_p (x) && mpfr_sgn (x) > 0 && inex == 0);
52 mpfr_set_ui (x, 0, MPFR_RNDN);
53 inex = mpfr_log2 (x, x, MPFR_RNDN);
54 MPFR_ASSERTN (mpfr_inf_p (x) && mpfr_sgn (x) < 0 && inex == 0);
55 mpfr_set_ui (x, 0, MPFR_RNDN);
56 mpfr_neg (x, x, MPFR_RNDN);
57 inex = mpfr_log2 (x, x, MPFR_RNDN);
58 MPFR_ASSERTN (mpfr_inf_p (x) && mpfr_sgn (x) < 0 && inex == 0);
60 mpfr_set_si (x, -1, MPFR_RNDN);
61 inex = mpfr_log2 (x, x, MPFR_RNDN);
62 MPFR_ASSERTN (mpfr_nan_p (x) && inex == 0);
64 mpfr_set_si (x, 1, MPFR_RNDN);
65 inex = mpfr_log2 (x, x, MPFR_RNDN);
66 MPFR_ASSERTN (mpfr_cmp_ui (x, 0) == 0 && MPFR_IS_POS(x) && inex == 0);
72 main (int argc, char *argv[])
78 test_generic (2, 100, 30);
80 data_check ("data/log2", mpfr_log2, "mpfr_log2");