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e83d0967 RK |
1 | /* |
2 | * This file is part of DisOrder. | |
3 | * Copyright (C) 2007 Richard Kettlewell | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
18 | * USA | |
19 | */ | |
20 | ||
21 | #ifndef TIMEVAL_H | |
22 | #define TIMEVAL_H | |
23 | ||
24 | static inline struct timeval tvsub(const struct timeval a, | |
25 | const struct timeval b) { | |
26 | struct timeval r; | |
27 | ||
28 | r.tv_sec = a.tv_sec - b.tv_sec; | |
29 | r.tv_usec = a.tv_usec - b.tv_usec; | |
30 | if(r.tv_usec < 0) { | |
31 | r.tv_usec += 1000000; | |
32 | r.tv_sec--; | |
33 | } | |
34 | if(r.tv_usec > 999999) { | |
35 | r.tv_usec -= 1000000; | |
36 | r.tv_sec++; | |
37 | } | |
38 | return r; | |
39 | } | |
40 | ||
189e9830 RK |
41 | static inline int64_t tvsub_us(const struct timeval a, |
42 | const struct timeval b) { | |
7aa087a7 RK |
43 | return (((uint64_t)a.tv_sec * 1000000 + a.tv_usec) |
44 | - ((uint64_t)b.tv_sec * 1000000 + b.tv_usec)); | |
45 | } | |
46 | ||
e83d0967 RK |
47 | #endif /* TIMEVAL_H */ |
48 | ||
49 | /* | |
50 | Local Variables: | |
51 | c-basic-offset:2 | |
52 | comment-column:40 | |
53 | fill-column:79 | |
54 | indent-tabs-mode:nil | |
55 | End: | |
56 | */ |