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 1.7 2002/02/19 19:39:36 millert 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 } 25