TA>> trig functions break with large argument values. Try sin(1e30) --
 TA>> the result isn't between -1 and 1!

 DN> The issue arises over the uncertainty in the argument exceeding the
 DN> full cycle from 0 to 2*pi, which means that any value in the range -1
 DN> to 1 could be returned as being valid.

 TS> If you have a look at the graph of f(x)=sin(x) you will 
 TS> notice that it returns a value between [-1,+1] for each 
 TS> argument, no matter how large it is.

Technically, sin(inf) is undefined.

 TS> This is either a hardware bug of the FPU or an implementation bug.

The FPU has just defined about 1e18 (or something like that) as
"approximately infinity".  (Infinity, in practice, always being a
relative number - relative to an ant, we're infinitely tall, for example.)

This doesn't make it any better, just an explanation from the theoretical
standpoint.  :-)


--- Maximus/2 3.01