1 /* Test of rounding towards positive infinity.
2 Copyright (C) 2007-2010 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 <http://www.gnu.org/licenses/>. */
17 /* Written by Bruno Haible <bruno@clisp.org>, 2007. */
23 #include "signature.h"
24 SIGNATURE_CHECK (ceill, long double, (long double));
29 #include "isnanl-nolibm.h"
33 /* On HP-UX 10.20, negating 0.0L does not yield -0.0L.
34 So we use minus_zero instead.
35 IRIX cc can't put -0.0L into .data, but can compute at runtime.
36 Note that the expression -LDBL_MIN * LDBL_MIN does not work on other
37 platforms, such as when cross-compiling to PowerPC on MacOS X 10.5. */
38 #if defined __hpux || defined __sgi
40 compute_minus_zero (void)
42 return -LDBL_MIN * LDBL_MIN;
44 # define minus_zero compute_minus_zero ()
46 long double minus_zero = -0.0L;
52 DECL_LONG_DOUBLE_ROUNDING
54 BEGIN_LONG_DOUBLE_ROUNDING ();
57 ASSERT (ceill (0.0L) == 0.0L);
58 ASSERT (ceill (minus_zero) == 0.0L);
59 /* Positive numbers. */
60 ASSERT (ceill (0.3L) == 1.0L);
61 ASSERT (ceill (0.7L) == 1.0L);
62 ASSERT (ceill (1.0L) == 1.0L);
63 ASSERT (ceill (1.001L) == 2.0L);
64 ASSERT (ceill (1.5L) == 2.0L);
65 ASSERT (ceill (1.999L) == 2.0L);
66 ASSERT (ceill (2.0L) == 2.0L);
67 ASSERT (ceill (65535.999L) == 65536.0L);
68 ASSERT (ceill (65536.0L) == 65536.0L);
69 ASSERT (ceill (2.341e31L) == 2.341e31L);
70 /* Negative numbers. */
71 ASSERT (ceill (-0.3L) == 0.0L);
72 ASSERT (ceill (-0.7L) == 0.0L);
73 ASSERT (ceill (-1.0L) == -1.0L);
74 ASSERT (ceill (-1.5L) == -1.0L);
75 ASSERT (ceill (-1.999L) == -1.0L);
76 ASSERT (ceill (-2.0L) == -2.0L);
77 ASSERT (ceill (-65535.999L) == -65535.0L);
78 ASSERT (ceill (-65536.0L) == -65536.0L);
79 ASSERT (ceill (-2.341e31L) == -2.341e31L);
80 /* Infinite numbers. */
81 ASSERT (ceill (1.0L / 0.0L) == 1.0L / 0.0L);
82 ASSERT (ceill (-1.0L / 0.0L) == -1.0L / 0.0L);
84 ASSERT (isnanl (ceill (NaNl ())));