Comments on: How do I test for NaN in Simulink R2009b? (NEW!) http://blogs.mathworks.com/seth/2009/09/18/how-do-i-test-for-nan-in-simulink-r2009b-new/ This blog is about Simulink. Tue, 14 Feb 2012 17:41:30 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: James Tursa http://blogs.mathworks.com/seth/2009/09/18/how-do-i-test-for-nan-in-simulink-r2009b-new/#comment-916 James Tursa Fri, 18 Dec 2009 18:03:44 +0000 http://blogs.mathworks.com/seth/2009/09/18/how-do-i-test-for-nan-in-simulink-r2009b-new/#comment-916 I don't get why special code is needed for the IsNaN check. Why doesn't (value!=value) work in all cases? Why do you need to do endianness checks and use a special _isnan(value) function in MSVC 6.0? I don’t get why special code is needed for the IsNaN check. Why doesn’t (value!=value) work in all cases? Why do you need to do endianness checks and use a special _isnan(value) function in MSVC 6.0?

]]> By: Han Geerligs http://blogs.mathworks.com/seth/2009/09/18/how-do-i-test-for-nan-in-simulink-r2009b-new/#comment-858 Han Geerligs Wed, 23 Sep 2009 07:44:03 +0000 http://blogs.mathworks.com/seth/2009/09/18/how-do-i-test-for-nan-in-simulink-r2009b-new/#comment-858 Hi Seth, maybe it is a good idea pointing out that the code in rt_nonfinite.c checks the endianness of the processor. So the endianness setting in the "Hardware Implementation pane" is not used, anyway not for a GRT-based target. For the ERT target however this might differ. -Han Hi Seth,

maybe it is a good idea pointing out that the code in rt_nonfinite.c checks the endianness of the processor. So the endianness setting in the “Hardware Implementation pane” is not used, anyway not for a GRT-based target.
For the ERT target however this might differ.

-Han

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