blob: f2078ff160eba15df2834a42cd6ff5d1a3b96ccb (
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
|
/* GTK - The GIMP Toolkit
* Copyright (C) 2011 Chun-wei Fan <fanc999@yahoo.com.tw>
*
* Author: Chun-wei Fan <fanc999@yahoo.com.tw>
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <math.h>
/* Workaround for round() for non-GCC/non-C99 compilers */
#ifndef HAVE_ROUND
static inline double
round (double x)
{
if (x >= 0)
return floor (x + 0.5);
else
return ceil (x - 0.5);
}
#endif
/* Workaround for lrint() for non-GCC/non-C99 compilers */
#ifndef HAVE_LRINT
static inline long
lrint (double x)
{
if (ceil (x + 0.5) == floor (x + 0.5))
{
if (x < 1 && x > -1)
return 0;
return (int) ceil (x) % 2 == 0 ? ceil (x) : floor (x);
}
else
return x >= 0 ? floor (x + 0.5) : ceil (x - 0.5);
}
#endif
|
