Subj : Remote - Local Time synchro
To   : Jasen Betts
From : Gerald Miller
Date : Sun Jul 28 2002 10:12 am

Hello Jasen,

    On Sunday July 21 2002 at 07:11,
    Jasen Betts [3:640/531.42] wrote to Gerald Miller,
    about:  Remote - Local Time synchro

Sorry for the delay in getting back to you but my employer had an
emergency and I was sent out of town to attend to it.

[snip]

 JB>>> if you want you could use inkey to delay and if the use doesn't
 JB>>> say no include the inkey delay could be the synchronisation
 JB>>> delay.

 GM>> This sounds appealing...  Would you provide an example?

 JB> assuming %localtime and %remotetime are the times read from the
 JB> logfile.

 JB>   set correction =  %@eval[(%@maketime[%remotetime]-%@time[%localtime]
 JB> %+
 JB>                     +43200 ) %% 86400 - 43200 ]]

The above line(s) gave me problems.....  I was able to get it to
work by changing it to:

  set correction=%@eval[(%remotetime - %localtime + 43200) %=
%% 86400 - 43200]

                  remotetime is:  23855
                   localtime is:  23861
                  Correction is:     -6

 JB>  :: %correction is the time difference seconds,
 JB>  ::    and is negative if your computer is fast.

 JB>  iff %correction lt -1

When the batch gets to the above line, there is an error because
the batch file gets loaded into my editor and is on the above
line....

 JB>   set z=
 JB>   inkey /w%@eval[%correction *-1] Correcting time: "c" to %=
 JB>   cancel /KC %%z
 JB>   if "%z" ne "c" time %@maketime[%@eval[(%@time[%_time]%=
 JB>   +%correction)%%86400]]
 JB>   set z=
 JB>   elseiff %correction gt i

Is the above line a "typo"?

 JB>    :: correct time forwards - no waiting
 JB>    time %@maketime[%@eval[(%@time[%_time]+%correction)%%86400]]
 JB>   endiff

 JB>>> most times you'll probably only have to adjust by a few seconds
 JB>>> (if you only get 1 second difference probably you should ignore
 JB>>> it because it could really be less than one second)

 GM>> It's a math problem......

 JB> yes, a rounding error.

 GM>> This doesn't work, yet I can't see where my error is....

 JB> it looks to me like you're trying too hard.

A distinct possibility....  8-)

[snip]

 JB> time sets the time to a few milliseconds before the time you ask for.
 JB> could that be the problem? OTOH %act or %amount could have the wrong
 JB> value...

There is a likelihood that %act or %amount contained the wrong
values and therefore, I ripped that section from the batch...

           Cheers ... Gerald

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