1 #include <netinet/in.h> 2 #include <byteswap.h> 3 ntohs(uint16_t n)4 uint16_t ntohs(uint16_t n) 5 { 6 union { int i; char c; } u = { 1 }; 7 return u.c ? bswap_16(n) : n; 8 } 9