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flightgear/Simulator/Time/fg_timer.hxx
1999-04-05 21:32:32 +00:00

80 lines
2.6 KiB
C++

/**************************************************************************
* fg_timer.hxx -- time handling routines
*
* Written by Curtis Olson, started June 1997.
*
* Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id$
* (Log is kept at end of this file)
**************************************************************************/
#ifndef _FG_TIMER_HXX
#define _FG_TIMER_HXX
#ifndef __cplusplus
# error This library requires C++
#endif
extern unsigned long int fgSimTime;
/* this routine initializes the interval timer to generate a SIGALRM
* after the specified interval (dt) the function f() will be called
* at each signal */
void fgTimerInit( float dt, void (*f)( int ) );
/* This function returns the number of milleseconds since the last
time it was called. */
int fgGetTimeInterval( void );
#endif /* _FG_TIMER_HXX */
/* $Log$
/* Revision 1.1 1999/04/05 21:32:47 curt
/* Initial revision
/*
* Revision 1.1 1998/04/24 00:52:30 curt
* Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
* Fog color fixes.
* Separated out lighting calcs into their own file.
*
* Revision 1.5 1998/04/21 17:01:45 curt
* Fixed a problems where a pointer to a function was being passed around. In
* one place this functions arguments were defined as ( void ) while in another
* place they were defined as ( int ). The correct answer was ( int ).
*
* Prepairing for C++ integration.
*
* Revision 1.4 1998/01/22 02:59:43 curt
* Changed #ifdef FILE_H to #ifdef _FILE_H
*
* Revision 1.3 1998/01/19 18:40:40 curt
* Tons of little changes to clean up the code and to remove fatal errors
* when building with the c++ compiler.
*
* Revision 1.2 1997/07/23 21:52:27 curt
* Put comments around the text after an #endif for increased portability.
*
* Revision 1.1 1997/06/16 19:24:20 curt
* Initial revision.
*
*/