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git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14685 87f5fb63-7c3d-0410-a384-fd976d0f7a62
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Olaf Barthel
2004-07-26 16:36:55 +00:00
parent a9e8f137ad
commit 91bcdea2a2
669 changed files with 80825 additions and 0 deletions
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library/time_clock.c Normal file
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/*
* $Id: time_clock.c,v 1.1.1.1 2004-07-26 16:32:21 obarthel Exp $
*
* :ts=4
*
* Portable ISO 'C' (1994) runtime library for the Amiga computer
* Copyright (c) 2002-2004 by Olaf Barthel <olsen@sourcery.han.de>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Neither the name of Olaf Barthel nor the names of contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _TIME_HEADERS_H
#include "time_headers.h"
#endif /* _TIME_HEADERS_H */
/****************************************************************************/
clock_t
clock(void)
{
struct DateStamp now;
LONG minutes_now,ticks_now;
LONG minutes_start,ticks_start;
clock_t result;
ENTER();
/* Get the current time. */
PROFILE_OFF();
DateStamp(&now);
PROFILE_ON();
/* Break the current and start time down into minutes and ticks. */
minutes_now = now.ds_Days * 24 * 60 + now.ds_Minute;
ticks_now = now.ds_Tick;
minutes_start = __start_time.ds_Days * 24 * 60 + __start_time.ds_Minute;
ticks_start = __start_time.ds_Tick;
/* Subtract the start time from the current time. We start
* with the ticks.
*/
ticks_now -= ticks_start;
/* Check for underflow. */
while(ticks_now < 0)
{
/* Borrow a minute from the current time. */
ticks_now += 60 * TICKS_PER_SECOND;
minutes_now--;
}
/* Now for the minutes. */
minutes_now -= minutes_start;
/* Check if any time has passed at all, then return the difference. */
if(minutes_now >= 0)
result = (clock_t)(minutes_now * 60 * TICKS_PER_SECOND + ticks_now);
else
result = (clock_t)0;
RETURN(result);
return(result);
}