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Re: mktime 2-digit vs 4-digit year [message #175218 is a reply to message #175216]

Fri, 26 August 2011 23:14

A
Messages: 17
Registered: June 2011

Karma:

Junior Member

> the mktime() year argument expects an integer
> how does it know if I passed a 2-digit vs 4 digit value?
> testing 0 <= year < 100 simply isn't good enough... what If I want to
> specify years 0000 - 0099 (which should be possible on a 64-bit
> system)

mktime was not designed to do that. 0-99 are interpreted as 2 digits. mktime
accepts 2 or 4 digit year. valid range is from 1901 and 2038 on 32-bit
system so you can't even interpret anything outside of that range. it is
Year 2038 problem - http://en.wikipedia.org/wiki/Year_2038_problem

for anything outside of that range you probably need to make your own
library.

> And if it does correctly accept the year 0000 - 0099, how could my own
> code distinguish between 0000 and 00 ?

You can't. 0000 == 00. so 00 - 99 is simply an alias for 1900-1999.

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[Message index]

		mktime 2-digit vs 4-digit year By: BKDotCom on Fri, 26 August 2011 19:56
		Re: mktime 2-digit vs 4-digit year By: A on Fri, 26 August 2011 23:14
		Re: mktime 2-digit vs 4-digit year By: BKDotCom on Sat, 27 August 2011 14:54
		Re: mktime 2-digit vs 4-digit year By: BKDotCom on Sat, 27 August 2011 18:05
		Re: mktime 2-digit vs 4-digit year By: A on Sun, 28 August 2011 15:15

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