glibc/include/arpa/nameser.h
Ulrich Drepper 697e162863 * include/arpa/nameser.h: Add optimizations for NS_GET16 and NS_GET32.
* resolv/res_send.c (res_nameinquery): Use NS_GET16 directly
	instead of ns_get16.
	(res_queriesmatch): Likewise.  Minor optimization.
2006-05-06 08:03:24 +00:00

29 lines
715 B
C

#include <resolv/arpa/nameser.h>
/* If the machine allows unaligned access we can do better than using
the NS_GET16, NS_GET32, NS_PUT16, and NS_PUT32 macros from the
installed header. */
#include <string.h>
#include <stdint.h>
#include <netinet/in.h>
#if _STRING_ARCH_unaligned
# undef NS_GET16
# define NS_GET16(s, cp) \
do { \
uint16_t *t_cp = (uint16_t *) (cp); \
(s) = ntohs (*t_cp); \
(cp) += NS_INT16SZ; \
} while (0)
# undef NS_GET32
# define NS_GET32(s, cp) \
do { \
uint32_t *t_cp = (uint32_t *) (cp); \
(s) = ntohl (*t_cp); \
(cp) += NS_INT32SZ; \
} while (0)
#endif