Cynerd commented on issue #18351:
URL: https://github.com/apache/nuttx/issues/18351#issuecomment-3847439426

   I have created this issue to discuss an appropriate solution.
   
   The simplest one is to just undef `CONFIG_HAVE_LONG_DOUBLE` in `compiler.h,` 
but that disables these functions altogether, which might not be compatible.
   
   The second solution would be to replace the implementation with `trunc` on 
platforms where `sizeof(double) == sizeof(long double)`. But that gives an idea 
if other such functions, intended just for `long double`, should not get the 
same treatment even when they do not emit the warning.


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