NFFT  3.3.0
time.c
1 /*
2  * Copyright (c) 2002, 2015 Jens Keiner, Stefan Kunis, Daniel Potts
3  *
4  * This program is free software; you can redistribute it and/or modify it under
5  * the terms of the GNU General Public License as published by the Free Software
6  * Foundation; either version 2 of the License, or (at your option) any later
7  * version.
8  *
9  * This program is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11  * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
12  * details.
13  *
14  * You should have received a copy of the GNU General Public License along with
15  * this program; if not, write to the Free Software Foundation, Inc., 51
16  * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17  */
18 
19 /* $Id: util.c 3483 2010-04-23 19:02:34Z keiner $ */
20 
21 #include "infft.h"
22 
23 #ifdef HAVE_TIME_H
24 #include <time.h>
25 #endif
26 
27 R Y(elapsed_seconds)(ticks t1, ticks t0)
28 {
29  UNUSED(t1);
30  UNUSED(t0);
31  return (R)(elapsed(t1,t0)) / (R)(TICKS_PER_SECOND);
32 }
33 
34 R Y(clock_gettime_seconds)(void)
35 {
36 #if defined(HAVE_CLOCK_GETTIME)
37  struct timespec tp;
38  if (clock_gettime(CLOCK_REALTIME, &tp) != 0)
39  {
40  tp.tv_sec = 0;
41  tp.tv_nsec = 0;
42  }
43 
44  return tp.tv_sec+(R)tp.tv_nsec/K(1e9);
45 #else
46  return K(0.0);
47 #endif
48 }
49 
#define UNUSED(x)
Dummy use of unused parameters to silence compiler warnings.
Definition: infft.h:1383