NaNs don't work in the simulator

2020-02-27T20:40:18.762000Z

so what is the definition of a NaN.
so poking is not always giving an answer.

NaNs don't work in the simulator

2020-02-27T20:40:17.379000Z

It seems I've forgotten my download area credentials (did I ever have them? there's no link to try to restore the password), so the most recent version I have is 2.3.9.41 and the misbehavior can be reproduced in it.>Zitat:
Are you developing a test suite for a CoDeSys compiler?
Nah, that sounds like a 3S developers' job. I'm just poking this creature with a pointy stick for fun. And I think in this particular case the runtime is to blame, not the compiler. It'd be nice to have NaNs consistently and reliably supported.

NaNs don't work in the simulator

2020-02-27T20:40:13.509000Z

2.3.9.40 build has Apr 16 2013 date. I will be surprised with any fixes ((

Are you developing a test suite for a CoDeSys compiler?

PS
I was wrong, 2.3.9.49 is available for download now. Have you tried it?

NaNs don't work in the simulator

2020-02-27T20:40:12.101000Z

The CoDeSys 2.3 sim and PLCWinNT don't seem aware of the not-a-number type. Attached to this post (in reverse order, apparently) are a few screenshots demonstrating the improper handling of NaNs by the simulator and PLCWinNT.

Use the following code to reproduce the results:

PROGRAM PLC_PRG
VAR
    bin: UDINT := 2#0111_1111_1000_0000_0000_0000_0000_0001;
    nan: POINTER TO REAL;
    equ: BOOL;
END_VAR
nan := ADR(bin);
equ := nan^ = nan^;

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