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80 lines
2.5 KiB
C++
80 lines
2.5 KiB
C++
/* Special Conformance Test 20.2.0.1: Verification of time, asctime, ctime, */
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/* localtime, gmtime, mktime, difftime */
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/* */
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/* The tester needs to verify that the printed time is accurate for the */
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/* current clock setting of machine. */
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#include <stddef.h>
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#include <time.h>
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main ()
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{
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time_t secondTime, theTime, *tptr = &theTime;
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char *timeString;
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struct tm *TM;
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double d;
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theTime = time (tptr); /* call time to get current date & time */
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if (theTime == -1) /* represented as an integral type */
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goto Fail;
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if (theTime != *tptr)
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goto Fail;
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/* Call ctime to get current date/time in the form: */
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/* Day Mon 99 99:99:99 yyyy\n\0 where Day = day of week; Mon = month; */
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/* 99 = day of month; 99:99:99 = current hour:min:sec; yyyy = current year */
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timeString = ctime (tptr);
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printf ("The current date/time is: %s\n", timeString);
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/* Call localtime and gmtime and then echo the fields to the screen. */
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TM = localtime (tptr);
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if (TM == NULL)
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goto Fail;
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printf ("localtime is:\n");
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printf ("sec = %d min = %d hour = %d day = %d month = %d year = %d\n",
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TM->tm_sec, TM->tm_min, TM->tm_hour, TM->tm_mday, TM->tm_mon,
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TM->tm_year);
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printf ("day of week = %d day of year = %d not daylight savings = %d\n\n",
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TM->tm_wday, TM->tm_yday, TM->tm_isdst);
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TM = gmtime (tptr);
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if (TM == NULL)
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goto Fail;
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printf ("gmtime is:\n");
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printf ("sec = %d min = %d hour = %d day = %d month = %d year = %d\n",
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TM->tm_sec, TM->tm_min, TM->tm_hour, TM->tm_mday, TM->tm_mon,
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TM->tm_year);
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printf ("day of week = %d day of year = %d not daylight savings = %d\n\n",
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TM->tm_wday, TM->tm_yday, TM->tm_isdst);
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/* Test mktime: should return original time as returned by time. */
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secondTime = mktime (TM);
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if (secondTime != theTime)
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goto Fail;
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/* Test asctime: should return same time as returned by ctime. */
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timeString = asctime (TM);
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printf ("The current date/time is: %s\n", timeString);
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/* Test difftime. Value returned should be zero. */
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d = difftime (theTime, secondTime);
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if (d != 0.0)
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goto Fail;
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return;
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Fail:
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printf ("Call to a time function in spc20.2.0.1\n");
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}
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