diff options
| author | Paul Davis <paul@linuxaudiosystems.com> | 2013-07-11 14:30:38 -0400 |
|---|---|---|
| committer | Paul Davis <paul@linuxaudiosystems.com> | 2013-07-11 14:30:38 -0400 |
| commit | 2218a70d376586633451134cb790b5c8d794e431 (patch) | |
| tree | c848398fa0ccbc13644b4202717f92a9696054b3 /libs/pbd/pbd/timersub.h | |
| parent | b6afce39a40f5a6f06de665c242d96934b7e3f8e (diff) | |
Add timersub macro for platforms where it isn't defined
Diffstat (limited to 'libs/pbd/pbd/timersub.h')
| -rw-r--r-- | libs/pbd/pbd/timersub.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/libs/pbd/pbd/timersub.h b/libs/pbd/pbd/timersub.h new file mode 100644 index 0000000000..6cb152414c --- /dev/null +++ b/libs/pbd/pbd/timersub.h @@ -0,0 +1,32 @@ +/* Copyright (C) 1991-1994,1996-2003,2005,2006,2009 + Free Software Foundation, Inc. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sys/time.h> + +#ifndef timersub +# define timersub(a, b, result) \ + do { \ + (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ + (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \ + if ((result)->tv_usec < 0) { \ + --(result)->tv_sec; \ + (result)->tv_usec += 1000000; \ + } \ + } while (0) +#endif + |