bswap.c revision 38451 
1/*
2 * Written by Manuel Bouyer <bouyer@netbsd.org>.
3 * Public domain.
4 */
5
6#if defined(LIBC_SCCS) && !defined(lint)
7static char *rcsid = "$NetBSD: bswap32.c,v 1.1 1997/10/09 15:42:33 bouyer Exp $";
8static char *rcsid = "$NetBSD: bswap64.c,v 1.1 1997/10/09 15:42:33 bouyer Exp $";
9#endif
10
11#include <sys/types.h>
12
13#undef bswap32
14#undef bswap64
15
16u_int32_t
17bswap32(x)
18    u_int32_t x;
19{
20	return  ((x << 24) & 0xff000000 ) |
21			((x <<  8) & 0x00ff0000 ) |
22			((x >>  8) & 0x0000ff00 ) |
23			((x >> 24) & 0x000000ff );
24}
25
26u_int64_t
27bswap64(x)
28    u_int64_t x;
29{
30	u_int32_t *p = (u_int32_t*)&x;
31	u_int32_t t;
32	t = bswap32(p[0]);
33	p[0] = bswap32(p[1]);
34	p[1] = t;
35	return x;
36}
37
38