71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
/* nstime.h
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* Definition of data structure to hold time values with nanosecond resolution
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*
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* $Id$
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __NSTIME_H__
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#define __NSTIME_H__
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#include <time.h>
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typedef struct {
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time_t secs;
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int nsecs;
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} nstime_t;
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/* functions */
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/* set the given nstime_t to zero */
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extern void nstime_set_zero(nstime_t *nstime);
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/* is the given nstime_t currently zero? */
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extern gboolean nstime_is_zero(nstime_t *nstime);
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/* calculate the delta between two times (can be negative!)
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*
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* delta = b-a
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*
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* Note that it is acceptable for two or more of the arguments to point at the
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* same structure.
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*/
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extern void nstime_delta(nstime_t *delta, const nstime_t *b, const nstime_t *a );
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/* calculate the sum of two times
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*
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* sum = a+b
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*
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* Note that it is acceptable for two or more of the arguments to point at the
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* same structure.
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*/
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extern void nstime_sum(nstime_t *sum, const nstime_t *b, const nstime_t *a );
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/* sum += a */
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#define nstime_add(sum, a) nstime_sum(sum, sum, a)
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/* converts nstime to double, time base is milli seconds */
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extern double nstime_to_msec(const nstime_t *time);
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/* converts nstime to double, time base is seconds */
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extern double nstime_to_sec(const nstime_t *time);
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#endif /* __NSTIME_H__ */
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