Lab 2 - Parsers

[gioannides]

1. What should happen in a division by 0?
2. What should happen in the log of a negative number?
3. What should happen in the log of 0?
4. inf x inf = NaN or inf? also including all of the inf and 0 variant calculations.

[m8pple]

I actually don't have test-cases for this, as I wanted to avoid over-complicating
things, but we can define it for completeness.

I think all these cases are covered by IEEE 754 rules for double-precision, including
the functions. So as long as we say that these should be non-signalling NaN (i.e.
no exceptions during evaluation), then the only issue is how to actually print
them out (I think?)

So in that case, you get to choose - how does your program print them, and we
can pick that.