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/*******************************************************************
*
* time.h Replacement for buggy <time.h> of old Turbo C compilers
*
* This file is a hack! It replaces <time.h> when compiling with
* old versions of Borland Turbo C compilers that lack clock(),
* and provide its own version.
*
* Written by Antoine Leca
* Copyright 1999-2000 Antoine Leca,
* David Turner, Robert Wilhelm and Werner Lemberg.
*
* This file is part of the FreeType project, and may only be used
* modified and distributed under the terms of the FreeType project
* license, LICENSE.TXT. By continuing to use, modify or distribute
* this file you indicate that you have read the license and
* understand and accept it fully.
*
******************************************************************/
#if !defined __TURBOC__ || !defined __MSDOS__ || __TURBOC__>0x220
/*
* We are not running on a Borland compiler, or either on
* a recent version that does not need the hack.
* Certainly the user does not clean up the directory.
* Stop the compilation.
*/
#error Remove the file time.h in directory test
#endif
#ifndef _TIME_H_DEFINED
#define _TIME_H_DEFINED
#if defined _TM_DEFINED || defined _TIME_T
#error Another version of <time.h> seems to have been already included
#endif
#ifndef __TIME_T
#define __TIME_T
typedef long time_t;
#endif
#ifndef __CLOCK_T
#define __CLOCK_T
typedef long clock_t;
#define CLK_TCK 18.2
#endif
#define CLOCKS_PER_SEC CLK_TCK
struct tm {
int tm_sec;
int tm_min;
int tm_hour;
int tm_mday;
int tm_mon;
int tm_year;
int tm_wday;
int tm_yday;
int tm_isdst;
};
clock_t clock (void);
double difftime(time_t time2, time_t time1);
time_t time (time_t *timer);
char *asctime (const struct tm *tblock);
char *ctime (const time_t *time);
struct tm *gmtime (const time_t *timer);
struct tm *localtime(const time_t *timer);
#if __TURBOC__ <= 0x0150
/*******************************************************************
*
* Function : clock
*
* Description : Turbo C v.1.x lacks the clock() function that is
* needed for at least fttimer.
* So this is a replacement that does more or less
* the functionnality of clock(), using the BIOS.
* Since we do not know exactly when the process
* started (as clock() is supposed to do), we cheat
* a little here.
*
* Input : None
*
* Output : None
*
* Notes : Use two static objects.
* NEED_CLOCK_HERE is a macro that should be defined
* in only ONE module (otherwise, the linker will complain).
*
******************************************************************/
extern long biostime(int cmd, long newtime);
static long CountOfTicks;
static long DateOfReference = 0;
clock_t clock (void)
{
if (DateOfReference == 0) /* this is the first call */
{
DateOfReference = time(NULL) / 86400L;
CountOfTicks = biostime(0,0L) - CLOCKS_PER_SEC;
/* pretend we start one second ago */
return CLOCKS_PER_SEC; /* to avoid returning 0 */
}
return (time(NULL) / 86400L - DateOfReference) * 0x1800B0L
+ biostime(0,0L) - CountOfTicks;
}
#endif /* Turbo C v.1.x */
#endif /* defined __TIME_H_DEFINED */
/* End */
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