diff options
Diffstat (limited to 'contrib/nvi/common/util.h')
| -rw-r--r-- | contrib/nvi/common/util.h | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/contrib/nvi/common/util.h b/contrib/nvi/common/util.h index 46edb4a..e6b2bec 100644 --- a/contrib/nvi/common/util.h +++ b/contrib/nvi/common/util.h @@ -6,7 +6,7 @@ * * See the LICENSE file for redistribution information. * - * @(#)util.h 10.5 (Berkeley) 3/16/96 + * $Id: util.h,v 10.7 2013/02/24 21:00:10 zy Exp $ */ /* Macros to init/set/clear/test flags. */ @@ -54,3 +54,40 @@ enum nresult { NUM_ERR, NUM_OK, NUM_OVER, NUM_UNDER }; NUM_OK) #define NADD_USLONG(sp, v1, v2) \ (NPFITS(ULONG_MAX, (v1), (v2)) ? NUM_OK : NUM_OVER) + +/* Macros for min/max. */ +#undef MIN +#undef MAX +#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b)) +#define MAX(_a,_b) ((_a)<(_b)?(_b):(_a)) + +/* Operations on timespecs */ +#undef timespecclear +#undef timespecisset +#undef timespeccmp +#undef timespecadd +#undef timespecsub +#define timespecclear(tvp) ((tvp)->tv_sec = (tvp)->tv_nsec = 0) +#define timespecisset(tvp) ((tvp)->tv_sec || (tvp)->tv_nsec) +#define timespeccmp(tvp, uvp, cmp) \ + (((tvp)->tv_sec == (uvp)->tv_sec) ? \ + ((tvp)->tv_nsec cmp (uvp)->tv_nsec) : \ + ((tvp)->tv_sec cmp (uvp)->tv_sec)) +#define timespecadd(vvp, uvp) \ + do { \ + (vvp)->tv_sec += (uvp)->tv_sec; \ + (vvp)->tv_nsec += (uvp)->tv_nsec; \ + if ((vvp)->tv_nsec >= 1000000000) { \ + (vvp)->tv_sec++; \ + (vvp)->tv_nsec -= 1000000000; \ + } \ + } while (0) +#define timespecsub(vvp, uvp) \ + do { \ + (vvp)->tv_sec -= (uvp)->tv_sec; \ + (vvp)->tv_nsec -= (uvp)->tv_nsec; \ + if ((vvp)->tv_nsec < 0) { \ + (vvp)->tv_sec--; \ + (vvp)->tv_nsec += 1000000000; \ + } \ + } while (0) |
