expl: Work around inaccurate implementation on NetBSD.
[gnulib.git] / tests / test-floor1.c
blob9c7ac20fc82a7113eb181485c03d70f21a0dfbba
1 /* Test of rounding towards negative infinity.
2 Copyright (C) 2007-2019 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
17 /* Written by Bruno Haible <bruno@clisp.org>, 2007. */
19 #include <config.h>
21 #include <math.h>
23 #include "signature.h"
24 SIGNATURE_CHECK (floor, double, (double));
26 #include "isnand-nolibm.h"
27 #include "minus-zero.h"
28 #include "infinity.h"
29 #include "nan.h"
30 #include "macros.h"
32 int
33 main (int argc, char **argv _GL_UNUSED)
35 /* Zero. */
36 ASSERT (floor (0.0) == 0.0);
37 ASSERT (floor (minus_zerod) == 0.0);
38 /* Positive numbers. */
39 ASSERT (floor (0.3) == 0.0);
40 ASSERT (floor (0.7) == 0.0);
41 ASSERT (floor (1.0) == 1.0);
42 ASSERT (floor (1.5) == 1.0);
43 ASSERT (floor (1.999) == 1.0);
44 ASSERT (floor (2.0) == 2.0);
45 ASSERT (floor (65535.999) == 65535.0);
46 ASSERT (floor (65536.0) == 65536.0);
47 ASSERT (floor (2.341e31) == 2.341e31);
48 /* Negative numbers. */
49 ASSERT (floor (-0.3) == -1.0);
50 ASSERT (floor (-0.7) == -1.0);
51 ASSERT (floor (-1.0) == -1.0);
52 ASSERT (floor (-1.001) == -2.0);
53 ASSERT (floor (-1.5) == -2.0);
54 ASSERT (floor (-1.999) == -2.0);
55 ASSERT (floor (-2.0) == -2.0);
56 ASSERT (floor (-65535.999) == -65536.0);
57 ASSERT (floor (-65536.0) == -65536.0);
58 ASSERT (floor (-2.341e31) == -2.341e31);
59 /* Infinite numbers. */
60 ASSERT (floor (Infinityd ()) == Infinityd ());
61 ASSERT (floor (- Infinityd ()) == - Infinityd ());
62 /* NaNs. */
63 ASSERT (isnand (floor (NaNd ())));
65 return 0;