Mismatch in the local time when using the RWTime.

Question

Hi All,
RWTime is showing +1 Hr excess for the local time.
Compared the time with the ouput of unix date command as well.
$ cat time.cc
#include <iostream>
#include <ctime>
// Roguewave headers
#include <rw/rwtime.h>
#include <rw/rwdate.h>
#include <rw/zone.h>
int main()
   // current date/time based on current system
   time_t now = time(0);
   // convert now to string form
   char* dt = ctime(&now);
   std::cout << "\nThe local date and time is: " << dt << std::endl;
   // convert now to tm struct for UTC
   tm *gmtm = gmtime(&now);
   dt = asctime(gmtm);
   std::cout << "The UTC date and time is:"<< dt << std::endl;
   std::cout << "-----------------------------------------------" << std::endl;
   // Roguewave counterparts
   RWTime t;
   std::cout << "\n[RW] The local date and time is: " <<
                t.asString() << std::endl;
   std::cout << "\n[RW] The UTC date and time is : " <<
                t.asString((char)NULL, RWZone::utc()) << std::endl;
   std::cout << std::endl;
   return 0;
$ CC -m32 -g -library=rwtools7_std -o test time.cc
$ ./test ; date
The local date and time is: Fri Jul  1 14:55:18 2011
The UTC date and time is:Fri Jul  1 09:25:18 2011
[RW] The local date and time is: 07/01/11 15:55:18
[RW] The UTC date and time is : 07/01/11 09:25:18
Fri Jul  1 14:55:18 IST 2011
$The header rwdate.h has following definition for default constructor.
RWTime() : sec(RWTime::currentTime()) {;}     // current timeSeems like a bug in RWTIme::currentTime() functionality.
Could someone conform the same (or) am i using RWTime wrongly ?
Thanks & Regards,
Sreekar

Answer 1

I tried your code using the same compiler on OEL 5.4, which is based on RHEL 5.4. I got correct answers for my time zone -- US-Pacific with Daylight Savings Time.
What time zone are you in (GMT+1 or GMT+2), and is DST supposed to be in effect?
The likely sources of the problem are that your machine does not set DST correctly, or that you are in an area for which RW Tools.h++ cannot provide a correct answer. (There are some places where the local rules can't be expressed in the limited representations of time zones and DST in Tools.h++)
What is the value of environment variable TZ?
Edited by: Steve_Clamage on Jul 5, 2011 9:31 AM