.Modelica.Utilities.System.getTime() returns bad year

[adrpo]

Running this model:

model GetTime
  Integer ms;
  Integer sec;
  Integer min;
  Integer hour;
  Integer mon;
  Integer year;
algorithm
  (ms, sec, min, hour, mon, year) := .Modelica.Utilities.System.getTime();
  .Modelica.Utilities.Streams.print("ms:" + String(ms) + "\n");
  .Modelica.Utilities.Streams.print("sec:" + String(sec) + "\n");
  .Modelica.Utilities.Streams.print("min:" + String(min) + "\n");
  .Modelica.Utilities.Streams.print("hour:" + String(hour) + "\n");
  .Modelica.Utilities.Streams.print("mon:" + String(mon) + "\n");
  .Modelica.Utilities.Streams.print("year:" + String(year) + "\n");
end GetTime;

with OpenModelica on Windows will give you year=10 and on Linux will give you year=9.
With Dymola 2019 on Windows ill give you year=10.

The code for the external C is here:
https://github.com/modelica/ModelicaStandardLibrary/blob/master/Modelica/Resources/C-Sources/ModelicaInternal.c#L1264
I haven't looked in detail into it, maybe somebody can spot the problem.

[adrpo]

Reference: https://stackoverflow.com/questions/58320730/modelica-print-current-time/

[HansOlsson]

The call should be:
(ms, sec, min, hour, mday, mon, year) := .Modelica.Utilities.System.getTime();

So that you get day of the month as well. I don't know why Linux results are from last month :-)

[adrpo]

Yeah, I read the doc wrong. But still the issue with the month on Linux remains.
Correct model should be:

model GetTime
  Integer ms;
  Integer sec;
  Integer min;
  Integer hour;
  Integer mday;
  Integer mon;
  Integer year;
algorithm
  (ms, sec, min, hour, mday, mon, year) := .Modelica.Utilities.System.getTime();
  .Modelica.Utilities.Streams.print("ms:" + String(ms) + "\n");
  .Modelica.Utilities.Streams.print("sec:" + String(sec) + "\n");
  .Modelica.Utilities.Streams.print("min:" + String(min) + "\n");
  .Modelica.Utilities.Streams.print("hour:" + String(hour) + "\n");
  .Modelica.Utilities.Streams.print("mday:" + String(mday) + "\n");
  .Modelica.Utilities.Streams.print("mon:" + String(mon) + "\n");
  .Modelica.Utilities.Streams.print("year:" + String(year) + "\n");
end GetTime;

[beutlich]

Hm, only for Win32 we increment the month

ModelicaStandardLibrary/Modelica/Resources/C-Sources/ModelicaInternal.c

Line 1306 in caaf8b1

tlocal->tm_mon = tlocal->tm_mon + 1; /* Correct for month starting at 1 */

[HansOlsson]

Hm, only for Win32 we increment the month

  ModelicaStandardLibrary/Modelica/Resources/C-Sources/ModelicaInternal.c


     Line 1306
  in
  caaf8b1





    
      
       tlocal->tm_mon  = tlocal->tm_mon + 1;     /* Correct for month starting at 1 */

And the same for the year as well, which will be even more obvious.

[beutlich]

Yes, it was wrong from the beginning when I copied it from Modelica_Noise for MSL v3.2.2

https://github.com/DLR-SR/Noise/blob/891468c5c25c39f49c785bbdb853a386a4d0e889/Modelica_Noise%201.0%20Beta.1/Resources/Include/ModelicaRandom.c#L208-L243