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
|
/* Test for finite value (zero, subnormal, or normal, and not infinite or NaN).
Copyright (C) 2007-2017 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2, 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, see <http://www.gnu.org/licenses/>. */
/* Written by Ben Pfaff <blp@gnu.org>, 2007. */
#include <config.h>
#include "isnanf-nolibm.h"
#include "isnand-nolibm.h"
#include "isnanl-nolibm.h"
/* The "cc" compiler on HP-UX 11.11, when optimizing, simplifies the test
x - y == 0.0 to x == y, a simplification which is invalid when x and y
are Infinity. Disable this optimization. */
#if defined __hpux && !defined __GNUC__
static float zerof;
static double zerod;
static long double zerol;
#else
# define zerof 0.f
# define zerod 0.
# define zerol 0.L
#endif
int gl_isfinitef (float x)
{
return !isnanf (x) && x - x == zerof;
}
int gl_isfinited (double x)
{
return !isnand (x) && x - x == zerod;
}
int gl_isfinitel (long double x)
{
return !isnanl (x) && x - x == zerol;
}
|
