Hello. I'm trying to figure out how to use FloatingPointControl.enableExceptions. Upon enabling severeExceptions I would expect the division by zero to be signaled, but neither do I get a SIGFPE nor does ieeeFlags show the exception having been signaled. What am I doing wrong?

import std.stdio;
import std.math;
void main()
{
    FloatingPointControl fc;
    fc.enableExceptions(fc.severeExceptions);
    real a = 1.0 / 0.0;
    writeln(ieeeFlags.divByZero);
}

-- 
Shriramana Sharma, Penguin #395953

On Friday, 11 December 2015 at 06:28:09 UTC, Shriramana Sharma wrote:
> Hello. I'm trying to figure out how to use FloatingPointControl.enableExceptions. Upon enabling severeExceptions I would expect the division by zero to be signaled, but neither do I get a SIGFPE nor does ieeeFlags show the exception having been signaled. What am I doing wrong?
>
> import std.stdio;
> import std.math;
> void main()
> {
>     FloatingPointControl fc;
>     fc.enableExceptions(fc.severeExceptions);
>     real a = 1.0 / 0.0;
>     writeln(ieeeFlags.divByZero);


Constant folding: a is evaluated at compile time to + infinity.

rumbu wrote:

> Constant folding: a is evaluated at compile time to + infinity.

Hmm... I guess the compiler figures that if someone is hardcoding that expression then they don't want to see an exception. Thanks for the explanation.

-- 
Shriramana Sharma, Penguin #395953