signaling and quite NaN on Linux/Alpha

[Bharadwaj Yadavalli]

I see that I can use the functions nan(const char *), 
nanf(const char *) and nanl(const char *) to return 
"a representation of NaN" according to Glibc Manual 
p. 509, but how can I get a signaling NaN or quiet 
NaN on Linux/Alpha? 

Thanks,

Bharadwaj