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 1.4 1996/08/19 08:29:05 tholo 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 unsigned short 16 #if __STDC__ 17 htons(unsigned short x) 18 #else 19 htons(x) 20 unsigned short x; 21 #endif 22 { 23 #if BYTE_ORDER == LITTLE_ENDIAN 24 u_char *s = (u_char *) &x; 25 return (u_int16_t)(s[0] << 8 | s[1]); 26 #else 27 return x; 28 #endif 29 } 30