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EnigmA Amiga Run 1997 February
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EnigmA AMIGA RUN 15 (1997)(G.R. Edizioni)(IT)[!][issue 1997-02][PLANET CD V].iso
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sas_cv6.57
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_tzset.c
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C/C++ Source or Header
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1996-08-04
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1KB
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79 lines
/***
*
* Copyright © 1996 SAS Institute, Inc.
*
* name __tzset -- set time zone parameters
*
* synopsis __tzset();
*
* description This function sets the time zone variables __daylight,
* __timezone, and __tzname from the information in the
* TZ environment variable.
*
***/
#include <time.h>
#include <stdlib.h>
#include <string.h>
void __tzset()
{
char *p;
int x;
#ifdef LESS_GETENV
p = _TZ;
if (p == NULL)
{
p = __getenv("TZ");
if (p == NULL)
p = "CST6";
_TZ = p;
}
else return;
#else
char *q;
q = p = __getenv("TZ");
if (p == NULL)
p = _TZ;
#endif
if (p == NULL)
p = "CST6";
__tzstn[0] = p[0];
__tzstn[1] = p[1];
__tzstn[2] = p[2];
__tzstn[3] = '\0';
__tzname[0] = __tzstn;
p += __stcd_i(&p[3], &x) + 3;
__timezone = x * 3600;
if (*p != '\0') {
__tzdtn[0] = p[0];
__tzdtn[1] = p[1];
__tzdtn[2] = p[2];
__tzdtn[3] = '\0';
__daylight = 1;
} else {
__tzdtn[0] = '\0';
__daylight = 0;
}
__tzname[1] = __tzdtn;
#ifndef LESS_GETENV
if (q) free(q);
#endif
}