Re: [GD-General] The joy of type aliasing and C

[Brian H. <ho...@py...>]

> int _fpclass(double);

Not portable.  The C99 standard introduced classification as a 
standard macro:

int fpclassify(double x);

Which returns one of the predefined classification macros 
(FP_INFINITE, etc.).  These are expected to be in <math.h>  I'm 
hoping/assuming that even "lightly compliant" C99 compilers will have 
these in them.

It also specifies isfinite(), isnan(), etc.

There is no portable way to recompress to a float16, since float16 is 
not portable.

Brian