source: abuse/tags/pd/imlib/include/system.h @ 49

Last change on this file since 49 was 49, checked in by Sam Hocevar, 11 years ago
  • Imported original public domain release, for future reference.
  • Property svn:keywords set to Id
File size: 1.4 KB
Line 
1#ifndef __SYS__
2#define __SYS__
3
4
5#ifdef WORDS_BIGENDIAN
6  #define BIG_ENDIANS
7#else
8  #define LITTLE_ENDIANS
9#endif
10
11
12#if defined( __WATCOMC__ )
13  // they didn't include this def in their math include
14  #ifndef M_PI
15    #define M_PI 3.141592654
16  #endif
17  // so stuff can find proper file ops
18  #include <io.h>
19#elif defined( __POWERPC__ )
20  // they didn't include this def in their math include
21  #ifndef M_PI
22    #define M_PI 3.141592654
23  #endif
24        #include <unistd.h>
25#else
26  // so apps can find unlink
27  #include <unistd.h>
28#endif
29
30
31#define short_swap(x) (((((unsigned short) (x)))<<8)|((((unsigned short) (x)))>>8))
32#define long_swap(x) \
33   ((( ((unsigned long)(x)) )>>24)|((( ((unsigned long)(x)) )&0x00ff0000)>>8)| \
34   ((( ((unsigned long)(x)) )&0x0000ff00)<<8)|(( ((unsigned long)(x)) )<<24))
35
36#if defined BIG_ENDIANS
37#define LONG int
38#define int_to_intel(x) short_swap(x)
39#define int_to_local(x) int_to_intel(x)
40#define big_long_to_local(x) (x)
41#define big_short_to_local(x) (x)
42#define long_to_intel(x) long_swap(x)
43#define long_to_local(x) long_to_intel(x)
44#else
45#define LONG long
46#define int_to_intel(x) (x)
47#define int_to_local(x) (x)
48#define long_to_local(x) (x)
49#define long_to_intel(x) (x)
50#define big_long_to_local(x) long_swap(x)
51#define big_short_to_local(x) short_swap(x)
52#endif
53
54#define bltl(x) big_long_to_local(x)
55#define bstl(x) big_short_to_local(x)
56#define lltl(x) long_to_intel(x)
57#define lstl(x) int_to_intel(x)
58
59#endif
60
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