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TIMESTMP.C
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1992-06-23
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/************************************************************************
File: timestmp.c
Function: Provides time and date information.
Version: 1.01
Author: Robert Sjoberg (SJOBRG@MIT-OZ)
Index:
char *timemon[]
array of string names for months of the year, 3-char abbrevs.
char *timedow[]
array of string names for days of week, 3-char abbrevs.
timestmp (tp)
fills struct tp with time and date information.
History:
10/16/83 - original V1.00, inspired by a similarly named function
written by Matthew Halfant. This version is for IBM PC and PC
compatibles. Written for Computer Innovations C86 compiler.
06/05/84 - V1.01, adapted to Unix V7 by defining symbol UNIX.
11 Dec 85 Craig Milo Rogers at USC/ISI
Converted to Lattice C 2.12. Left the C86 code around in a
conditional.
************************************************************************/
#include "timestmp.h"
#ifndef UNIX
#ifndef PCDOS
#define PCDOS /* defaults to PC-DOS time function */
#endif
#ifndef C86
#ifndef LATTICEC
#define LATTICEC /* defaults to the Lattice C compiler. */
#endif
#endif
#endif
char *timemon[] = {
"", /* not used, since months start with 1 */
"Jan","Feb","Mar","Apr","May","Jun",
"Jul","Aug","Sep","Oct","Nov","Dec"
};
char *timedow[] = {
"Sun","Mon","Tue","Wed","Thu","Fri","Sat"
};
#ifdef PCDOS
#ifdef C86
timestmp (tp)
struct timedata *tp;
/*
Get current date and time and place them in the structure tp.
*/
{
struct {
char al,ah,bl,bh,cl,ch,dl,dh;
int si,di,ds,es;
} REGS;
REGS.ah = 0x2a; /* request date */
sysint (0x21, ®S, ®S);
tp->tim_yr = ((REGS.ch & 0377) << 8) + (REGS.cl & 0377);
tp->tim_mon = REGS.dh;
tp->tim_dat = REGS.dl;
tp->tim_dow = -1; /* not defined */
REGS.ah = 0x2c; /* request time */
sysint (0x21, ®S, ®S);
tp->tim_hr = REGS.ch;
tp->tim_min = REGS.cl;
tp->tim_sec = REGS.dh;
}
#endif /* C86 */
#ifdef LATTICEC
#include <dos.h>
timestmp (tp)
struct timedata *tp;
/*
Get current date and time and place them in the structure tp.
*/
{
union REGS ioregs; /* Register image for DOS calls. */
ioregs.h.ah = 0x2a; /* request date */
intdos (&ioregs, &ioregs);
tp->tim_yr = ioregs.x.cx;
tp->tim_mon = ioregs.h.dh;
tp->tim_dat = ioregs.h.dl;
tp->tim_dow = ioregs.h.al;
ioregs.h.ah = 0x2c; /* request time */
intdos (&ioregs, &ioregs);
tp->tim_hr = ioregs.h.ch;
tp->tim_min = ioregs.h.cl;
tp->tim_sec = ioregs.h.dh;
}
#endif /* LATTICEC */
#endif /* PCDOS */
#ifdef UNIX
#include <time.h>
timestmp (tp)
struct timedata *tp;
/*
Gets current date and time and places them in the structure tp.
*/
{
struct tm t;
extern struct tm *localtime();
long clock;
time (&clock);
t = *localtime(&clock);
tp->tim_yr = t.tm_year + 1900;
tp->tim_mon = t.tm_mon;
tp->tim_dat = t.tm_mday;
tp->tim_dow = t.tm_wday;
tp->tim_hr = t.tm_hour;
tp->tim_min = t.tm_min;
tp->tim_sec = t.tm_sec;
}
#endif