🚀 go-pugleaf

In article <1992Nov21.111335.4014@arizona.edu>  writes:
> In article <1992Nov20.221038.1170@proforma.com>  writes:
> > I would like to trap NaN -- the "not a number" condition that floating  
point  
> > values can take.
> It turns out that (NaN != NaN) is true.  So, in some code I did before, I  
used:
> 
> if(x == x) {	/* x is NOT NaN */
> < use x>
> }
> else {
> <whatever for the NaN case>
> }
> 

I tend to use the finite() call, which also traps infinities (which may 
be good or bad).  Check out its man page for details.

--
Frank Mitchell,	Business Systems Analyst, First National Bank of Chicago
email:frank@fnbc.com (NeXTmail)

A happy child is merely an unhappy child who is having fun.
-- Morticia Addams