on 01.04.2010 at 23:59 Scott McMurray wrote :
The worry I have is with compound expressions. It looks nice for a single function call, but compare these two lines:
w = x/y*z; w = x*y/z;
With a signalling NaN, their exceptional behaviour is drastically different.
This is another example of the advantage of the split types: If x, y, and z are nothrow_xints, the type of w is what decides whether the statement will throw. Alternatively, if x, y, and z are finite_xints, both statements will throw and never touch w.
they are throwing anyway whether or not exceptions are blocked blocking of exceptions allows you to check explicitly if a number of operations like division succeeds that number of operations is relatively small so you don't need to check result of every operations but blindly writing such expressions is irrelevant to the nan behaviour because both eventually throw we are spinning and spinning around the same thing for a week is there an end? -- Pavel P.S. if you notice a grammar mistake or weird phrasing in my message please point it out