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
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/misc/xf86_Util.c,v 3.8 2001/10/28 03:34:02 tsi Exp $ */
/*
* Copyright 1993 by David Wexelblat <dwex@goblin.org>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of David Wexelblat not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. David Wexelblat makes no representations
* about the suitability of this software for any purpose. It is provided
* "as is" without express or implied warranty.
*
* DAVID WEXELBLAT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL DAVID WEXELBLAT BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*
*/
/* $XConsortium: xf86_Util.c /main/5 1996/10/23 13:13:10 kaleb $ */
/*
* This file is for utility functions that will be shared by other pieces
* of the system. Putting things here ensure that all the linking order
* dependencies are dealt with, as this library will be linked in last.
*/
#include <ctype.h>
/* To prevent empty source file warnings */
int _xf86misc;
#if 0
/* For use only with gcc */
#ifdef __GNUC__
#include "os.h"
char *
debug_alloca(char *file, int line, int size)
{
char *ptr;
ptr = Xalloc(size);
ErrorF("Alloc: %s line %d; ptr = 0x%x, length = %d\n", file, line,
ptr, size);
return ptr;
}
void
debug_dealloca(char *file, int line, char *ptr)
{
ErrorF("Dealloc: %s line %d; ptr = 0x%x\n", file, line, ptr);
Xfree(ptr);
}
#endif
#endif
#if defined(ISC) || defined(Lynx)
#include <math.h>
/* Needed for apm_driver.c */
/* These functions are modeled after the functions inside gnu's libc */
static double
copysign(double x, double y)
{
x = fabs(x);
return y < 0 ? - x : x;
}
double
RInt(double x)
{
double s,t;
const double one = 1.0;
const static double L = 4503599627370496.0E0;
if (x!=x)
return(x);
if (copysign(x,one) >= L)
return(x);
s = copysign(L,x);
t = x + s;
return (t - s);
}
#endif
|
