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bswap32.c revision 1.2
      1  1.2       apb /*  $NetBSD: bswap32.c,v 1.2 2008/02/16 17:37:13 apb Exp $    */
      2  1.1  christos 
      3  1.1  christos /*
      4  1.1  christos  * Written by Manuel Bouyer <bouyer (at) NetBSD.org>.
      5  1.1  christos  * Public domain.
      6  1.1  christos  */
      7  1.1  christos 
      8  1.1  christos #include <sys/cdefs.h>
      9  1.1  christos #if defined(LIBC_SCCS) && !defined(lint)
     10  1.2       apb __RCSID("$NetBSD: bswap32.c,v 1.2 2008/02/16 17:37:13 apb Exp $");
     11  1.1  christos #endif /* LIBC_SCCS and not lint */
     12  1.1  christos 
     13  1.1  christos #include <sys/types.h>
     14  1.1  christos #include <machine/bswap.h>
     15  1.1  christos 
     16  1.1  christos #undef bswap32
     17  1.1  christos 
     18  1.2       apb uint32_t
     19  1.1  christos bswap32(x)
     20  1.2       apb 	uint32_t x;
     21  1.1  christos {
     22  1.1  christos 	return	((x << 24) & 0xff000000 ) |
     23  1.1  christos 		((x <<  8) & 0x00ff0000 ) |
     24  1.1  christos 		((x >>  8) & 0x0000ff00 ) |
     25  1.1  christos 		((x >> 24) & 0x000000ff );
     26  1.1  christos }
     27