36 #define netdissect_timevalclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0)  argument
38 #define netdissect_timevalisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)  argument
40 #define netdissect_timevalcmp(tvp, uvp, cmp)   \  argument
41 	(((tvp)->tv_sec == (uvp)->tv_sec) ?    \
42 	 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \
43 	 ((tvp)->tv_sec cmp (uvp)->tv_sec))
45 #define netdissect_timevaladd(tvp, uvp, vvp, nano_prec)           \  argument
47 		(vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec;    \
48 		(vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
62 #define netdissect_timevalsub(tvp, uvp, vvp, nano_prec)            \  argument
64 		(vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec;     \
65 		(vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec;  \