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- Replaced ISO Latin 1 code #160 with a plain blank space (ASCII code #32) where necessary git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@15305 87f5fb63-7c3d-0410-a384-fd976d0f7a62
113 lines
3.2 KiB
C
113 lines
3.2 KiB
C
/*
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* $Id: time_clock.c,v 1.7 2006-01-08 12:04:27 obarthel Exp $
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*
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* :ts=4
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*
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* Portable ISO 'C' (1994) runtime library for the Amiga computer
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* Copyright (c) 2002-2015 by Olaf Barthel <obarthel (at) gmx.net>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Neither the name of Olaf Barthel nor the names of contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _TIME_HEADERS_H
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#include "time_headers.h"
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#endif /* _TIME_HEADERS_H */
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/****************************************************************************/
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#ifndef _STDLIB_CONSTRUCTOR_H
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#include "stdlib_constructor.h"
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#endif /* _STDLIB_CONSTRUCTOR_H */
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/****************************************************************************/
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static struct DateStamp start_time;
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/****************************************************************************/
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CLIB_CONSTRUCTOR(clock_init)
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{
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ENTER();
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/* Remember when this program was started. */
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DateStamp(&start_time);
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LEAVE();
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CONSTRUCTOR_SUCCEED();
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}
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/****************************************************************************/
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clock_t
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clock(void)
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{
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struct DateStamp now;
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LONG minutes_now,ticks_now;
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LONG minutes_start,ticks_start;
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clock_t result;
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ENTER();
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/* Get the current time. */
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PROFILE_OFF();
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DateStamp(&now);
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PROFILE_ON();
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/* Break the current and start time down into minutes and ticks. */
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minutes_now = now.ds_Days * 24 * 60 + now.ds_Minute;
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ticks_now = now.ds_Tick;
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minutes_start = start_time.ds_Days * 24 * 60 + start_time.ds_Minute;
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ticks_start = start_time.ds_Tick;
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/* Subtract the start time from the current time. We start
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* with the ticks.
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*/
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ticks_now -= ticks_start;
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/* Check for underflow. */
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while(ticks_now < 0)
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{
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/* Borrow a minute from the current time. */
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ticks_now += 60 * TICKS_PER_SECOND;
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minutes_now--;
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}
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/* Now for the minutes. */
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minutes_now -= minutes_start;
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/* Check if any time has passed at all, then return the difference. */
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if(minutes_now >= 0)
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result = (clock_t)(minutes_now * 60 * TICKS_PER_SECOND + ticks_now);
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else
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result = (clock_t)0;
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RETURN(result);
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return(result);
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}
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