blob: 24f9b775cf1496a9dfcbc96ceeb7644dc4da6853 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
/* Test of rounding towards negative infinity.
Copyright (C) 2010-2012 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include <math.h>
#include "fpucw.h"
#include "isnanl-nolibm.h"
#include "minus-zero.h"
#include "infinity.h"
#include "nan.h"
#include "macros.h"
int
main ()
{
DECL_LONG_DOUBLE_ROUNDING
BEGIN_LONG_DOUBLE_ROUNDING ();
/* See IEEE 754, section 6.3:
"the sign of the result of the round floating-point number to
integral value operation is the sign of the operand. These rules
shall apply even when operands or results are zero or infinite." */
/* Zero. */
ASSERT (!signbit (floorl (0.0L)));
ASSERT (!!signbit (floorl (minus_zerol)) == !!signbit (minus_zerol));
/* Positive numbers. */
ASSERT (!signbit (floorl (0.3L)));
ASSERT (!signbit (floorl (0.7L)));
/* Negative numbers. */
ASSERT (!!signbit (floorl (-0.3L)) == !!signbit (minus_zerol));
ASSERT (!!signbit (floorl (-0.7L)) == !!signbit (minus_zerol));
/* [MX] shaded specification in POSIX. */
/* NaN. */
ASSERT (isnanl (floorl (NaNl ())));
/* Infinity. */
ASSERT (floorl (Infinityl ()) == Infinityl ());
ASSERT (floorl (- Infinityl ()) == - Infinityl ());
return 0;
}
|
