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      1  1.3        he /*	$NetBSD: htons.c,v 1.3 2012/03/21 20:02:56 he Exp $	*/
      2  1.1  christos 
      3  1.1  christos /*
      4  1.1  christos  * Written by J.T. Conklin <jtc (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  1.3        he __RCSID("$NetBSD: htons.c,v 1.3 2012/03/21 20:02:56 he Exp $");
     11  1.1  christos #endif
     12  1.1  christos 
     13  1.1  christos #include <sys/types.h>
     14  1.1  christos 
     15  1.1  christos #undef htons
     16  1.1  christos 
     17  1.1  christos uint16_t
     18  1.2     joerg htons(uint16_t x)
     19  1.1  christos {
     20  1.1  christos #if BYTE_ORDER == LITTLE_ENDIAN
     21  1.3        he 	u_char *s = (void *) &x;
     22  1.1  christos 	return (uint16_t)(s[0] << 8 | s[1]);
     23  1.1  christos #else
     24  1.1  christos 	return x;
     25  1.1  christos #endif
     26  1.1  christos }
     27