1 /* $OpenBSD: htonl.c,v 1.7 2014/07/21 01:51:10 guenther Exp $ */ 2 /* 3 * Written by J.T. Conklin <jtc (at) netbsd.org>. 4 * Public domain. 5 */ 6 7 #include <sys/types.h> 8 #include <endian.h> 9 10 #undef htonl 11 12 u_int32_t 13 htonl(u_int32_t x) 14 { 15 #if BYTE_ORDER == LITTLE_ENDIAN 16 u_char *s = (u_char *)&x; 17 return (u_int32_t)(s[0] << 24 | s[1] << 16 | s[2] << 8 | s[3]); 18 #else 19 return x; 20 #endif 21 } 22
