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: htonl.c,v 1.4 1996/12/12 03:19:55 tholo Exp $"; 8 #endif /* LIBC_SCCS and not lint */ 9 10 #include <sys/types.h> 11 #include <machine/endian.h> 12 13 #undef htonl 14 15 u_int32_t 16 htonl(x) 17 u_int32_t x; 18 { 19 #if BYTE_ORDER == LITTLE_ENDIAN 20 u_char *s = (u_char *)&x; 21 return (u_int32_t)(s[0] << 24 | s[1] << 16 | s[2] << 8 | s[3]); 22 #else 23 return x; 24 #endif 25 } 26