summaryrefslogtreecommitdiffstats
path: root/lib/libstand/bswap.c
blob: 1951509df93f9a21b7b6ab9cb63e2d9fee64a915 (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
/*
 * Written by Manuel Bouyer <bouyer@netbsd.org>.
 * Public domain.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char *rcsid = "$NetBSD: bswap32.c,v 1.1 1997/10/09 15:42:33 bouyer Exp $";
static char *rcsid = "$NetBSD: bswap64.c,v 1.1 1997/10/09 15:42:33 bouyer Exp $";
#endif

#include <sys/types.h>

#undef bswap32
#undef bswap64

u_int32_t
bswap32(x)
    u_int32_t x;
{
	return  ((x << 24) & 0xff000000 ) |
			((x <<  8) & 0x00ff0000 ) |
			((x >>  8) & 0x0000ff00 ) |
			((x >> 24) & 0x000000ff );
}

u_int64_t
bswap64(x)
    u_int64_t x;
{  
	u_int32_t *p = (u_int32_t*)&x;
	u_int32_t t;
	t = bswap32(p[0]);
	p[0] = bswap32(p[1]);
	p[1] = t;
	return x;
}   

OpenPOWER on IntegriCloud