A Philosophy of Software Design

[Richard (Rikki) Andrew Cattermole]

On 30/06/2026 7:54 AM, Walter Bright wrote:
> On 6/28/2026 12:31 PM, FinalEvilution wrote:
>> I'd just like to note that there are floating point hardware exceptions 
> 
> True, but pretty much nobody enables that.

About that...

I've been thinking about a check specifically for this.

Initially I thought about a read barrier, but that would be too costly.

If however, there was a flag that was set in the ISA that we could read, 
then we could inject a check at the end of any expression (according to 
statements), if they contain a float.

```d
float n;

if (n * 2 > 0) // auto _tmp = n * 2 > 0, !isnanflagset || 
_d_nanfoundcheck, _tmp
```