in reply to Re^2: Subtracting and Comparing Two Dates
in thread Subtracting and Comparing Two Dates

I don't see anything in POSIX similar to Time::Local's timegm. To which POSIX function were you refering?

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Re^4: Subtracting and Comparing Two Dates
by BaldPenguin (Friar) on Jan 08, 2007 at 23:18 UTC
    timegm() in Time::Local == gmtime() in POSIX

    After looking it looks like Time::Local is a Pure Perl interface to the Perl localtime objects where POSIX is an XS interface to the system libraries.

    Don
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[reply]

      Not at all. Look at the arguments...

      FunctionPOSIX equivalentPurpose of Function
      CORE::gmtimePOSIX::gmtimeReturns GMT time components from epoch time.
      Time::Local::timegm[none]Returns the epoch time from GMT time components.
      CORE::localtimePOSIX::localtimeReturns local time components from epoch time.
      Time::Local::timelocalPOSIX::mktimeReturns the epoch time from local time components.

      POSIX is missing the very function that's needed here.

[reply]

      I'm not sure that's quite right... 

      sub gmtime {
    usage "gmtime(time)" if @_ != 1;
    CORE::gmtime($_[0]);
}

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      They seem to be different by a kilobyte or two. I noticed they both use CORE::gmtime() though.

      -Paul

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