[cfe-dev] Clang-Cl - Representation of NAN

[Gaier, Bjoern via cfe-dev]

Hello everyone,

we are currently using clang-cl (build with LLVM7) in our project, which previously used the MSVC2017 compiler. We noticed a major difference with the representation of the NAN value.
Clang generates 0x7FF8000000000000 for an NAN
MSVC  generates 0xFFF8000000000000 for an NAN

This difference leads to problems with C#, because it interacts with our C++ code and 'misses' the NAN.

Is there a way to change the representation of the NAN via a compiler flag?
Could we also change the source code of clang to force this representation of NAL? Or is this to much effort for a workaround?

Kind greetings
Björn
Als GmbH eingetragen im Handelsregister Bad Homburg v.d.H. HRB 9816, USt.ID-Nr. DE 114 165 789 Geschäftsführer: Dr. Hiroshi Nakamura, Dr. Robert Plank, Markus Bode, Heiko Lampert, Takashi Nagano, Takeshi Fukushima. Junichi Tajika
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/cfe-dev/attachments/20190205/28b9909f/attachment.html>