Subversion Repositories planix.SVN

Rev

Rev 2 | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
2 - 1 
#include <u.h>
2 
 
3 
/*
4 
 * big-endian short
5 
 */
6 
ushort
7 
beswab(ushort s)
8 
{
9 
	uchar *p;
10 
 
11 
	p = (uchar*)&s;
12 
	return (p[0]<<8) | p[1];
13 
}
14 
 
15 
/*
16 
 * big-endian long
17 
 */
18 
ulong
19 
beswal(ulong l)
20 
{
21 
	uchar *p;
22 
 
23 
	p = (uchar*)&l;
24 
	return (p[0]<<24) | (p[1]<<16) | (p[2]<<8) | p[3];
25 
}
26 
 
27 
/*
28 
 * big-endian vlong
29 
 */
30 
uvlong
31 
beswav(uvlong v)
32 
{
33 
	uchar *p;
34 
 
35 
	p = (uchar*)&v;
36 
	return ((uvlong)p[0]<<56) | ((uvlong)p[1]<<48) | ((uvlong)p[2]<<40)
37 
				  | ((uvlong)p[3]<<32) | ((uvlong)p[4]<<24)
38 
				  | ((uvlong)p[5]<<16) | ((uvlong)p[6]<<8)
39 
				  | (uvlong)p[7];
40 
}
41 
 
42 
/*
43 
 * little-endian short
44 
 */
45 
ushort
46 
leswab(ushort s)
47 
{
48 
	uchar *p;
49 
 
50 
	p = (uchar*)&s;
51 
	return (p[1]<<8) | p[0];
52 
}
53 
 
54 
/*
55 
 * little-endian long
56 
 */
57 
ulong
58 
leswal(ulong l)
59 
{
60 
	uchar *p;
61 
 
62 
	p = (uchar*)&l;
63 
	return (p[3]<<24) | (p[2]<<16) | (p[1]<<8) | p[0];
64 
}
65 
 
66 
/*
67 
 * little-endian vlong
68 
 */
69 
uvlong
70 
leswav(uvlong v)
71 
{
72 
	uchar *p;
73 
 
74 
	p = (uchar*)&v;
75 
	return ((uvlong)p[7]<<56) | ((uvlong)p[6]<<48) | ((uvlong)p[5]<<40)
76 
				  | ((uvlong)p[4]<<32) | ((uvlong)p[3]<<24)
77 
				  | ((uvlong)p[2]<<16) | ((uvlong)p[1]<<8)
78 
				  | (uvlong)p[0];
79 
}