1 /*
2 * Written by J.T. Conklin <jtc@netbsd.org>.
3 * Public domain.
4 */
5
6 #if defined(LIBC_SCCS) && !defined(lint)
7 static char *rcsid = "$OpenBSD: htons.c,v 1.5 2004/11/28 07:23:41 mickey Exp $";
8 #endif /* LIBC_SCCS and not lint */
9
10 #include <sys/types.h>
11 #include <machine/endian.h>
12
13 #undef htons
14
15 u_int16_t
16 htons(u_int16_t x)
17 {
18 #if BYTE_ORDER == LITTLE_ENDIAN
19 u_char *s = (u_char *) &x;
20 return (u_int16_t)(s[0] << 8 | s[1]);
21 #else
22 return x;
23 #endif
24 }