xref: /openbsd-src/lib/libc/net/htonl.c (revision db5b349cf7aa19c2b6169fbb65597f2e741714ab)
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 1.5 2005/03/25 13:24:12 otto 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(u_int32_t x)
17 {
18 #if BYTE_ORDER == LITTLE_ENDIAN
19 	u_char *s = (u_char *)&x;
20 	return (u_int32_t)(s[0] << 24 | s[1] << 16 | s[2] << 8 | s[3]);
21 #else
22 	return x;
23 #endif
24 }
25