[Gambas-user] Unix Date conversion

[Benoit Minisini]

On Monday 24 July 2006 15:25, sbungay wrote:
> Benoit Minisini wrote:
> > On Monday 24 July 2006 14:48, Benoit Minisini wrote:
> >>On Monday 24 July 2006 14:37, MrBiTs wrote:
> >>>/*
> >>>    That is correct. # of seconds since 1/1/1970.
> >>>*/
> >>>
> >>>Number of seconds since 1/1/1970 00:00:00 GMT.
> >>>
> >>>In perl, for example, we have a very simple line to convert Unix
> >>>Timestamp into human-readable format:
> >>>
> >>>$ perl -e "print scalar localtime(0);"
> >>>Wed Dec 31 21:00:00 1969
> >>>
> >>>As I told, this is GMT based. So, here in Brazil we  have GMT-3, then
> >>>that's correct.
> >>>
> >>>CheerS
> >>
> >>I have read the man page...
> >>
> >>Actually this is *not* the true number of seconds before 1/1/1970,
> >> because: - All years divisible by four are considered leap years.
> >>- Sometimes a leap second is added to some years, and it is ignored.
> >>
> >>So maybe a dedicated function is needed...
> >
> > But according to:
> >
> > http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap04.html
> >
> > The leap years are respected. The formula is:
> >
> > UnixDate =
> > tm_sec + tm_min*60 + tm_hour*3600 + tm_yday*86400 +
> >     (tm_year-70)*31536000 + ((tm_year-69)/4)*86400 -
> >     ((tm_year-1)/100)*86400 + ((tm_year+299)/400)*86400
> >
> > So who is right? :-)
> >
> > I really should make a dedicated function!
>
>    Brazil? I thought you resided in France?? Anyway...

I am not MrBiTs, wake up :-)

-- 
Benoit Minisini