2 * Definition of data structure to hold time values with nanosecond resolution
6 * Wireshark - Network traffic analyzer
7 * By Gerald Combs <gerald@wireshark.org>
8 * Copyright 1998 Gerald Combs
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version 2
13 * of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
30 #include <wiretap/wtap.h>
39 /* set the given nstime_t to zero */
40 extern void nstime_set_zero(nstime_t *nstime);
42 /* is the given nstime_t currently zero? */
43 extern gboolean nstime_is_zero(nstime_t *nstime);
45 /* set the given nstime_t to (0,maxint) to mark it as "unset"
46 * That way we can find the first frame even when a timestamp
47 * is zero (fix for bug 1056)
49 extern void nstime_set_unset(nstime_t *nstime);
51 /* is the given nstime_t currently (0,maxint)? */
52 extern gboolean nstime_is_unset(nstime_t *nstime);
54 /* calculate the delta between two times (can be negative!)
58 * Note that it is acceptable for two or more of the arguments to point at the
61 extern void nstime_delta(nstime_t *delta, const nstime_t *b, const nstime_t *a );
63 /* calculate the sum of two times
67 * Note that it is acceptable for two or more of the arguments to point at the
70 extern void nstime_sum(nstime_t *sum, const nstime_t *b, const nstime_t *a );
73 #define nstime_add(sum, a) nstime_sum(sum, sum, a)
75 /* compare two times are return a value similar to memcmp() or strcmp().
81 extern int nstime_cmp (const nstime_t *a, const nstime_t *b );
83 /* converts nstime to double, time base is milli seconds */
84 extern double nstime_to_msec(const nstime_t *nstime);
86 /* converts nstime to double, time base is seconds */
87 extern double nstime_to_sec(const nstime_t *nstime);
89 /* converts wtap_nstime to double, time base is seconds */
90 extern double wtap_nstime_to_sec(const struct wtap_nstime *nstime);
92 #endif /* __NSTIME_H__ */