Division by zero - why no exception?

[bearophile]

> (but be careful, this works only in the main(), probably to keep tidy the semantics of pure functions):

That was not precise, the FPC struct is restored at the end of the main() scope, so if you call a function inside main it will keep the same FPC struct, and this raises the division by zero error:

import std.stdio: writeln;
import std.math: FloatingPointControl;

void foo() {
    double a = 0.0;
    double f = 1 / a;
    writeln(f);
}

void main() {
    FloatingPointControl fpc;
    fpc.enableExceptions(FloatingPointControl.severeExceptions);
    foo();
}

Also, you can't catch it:

void foo() {
    double f = 0;
    try {
        double a = 0.0;
        f = 1 / a; // object.Error: Float Divide by Zero
    } catch (Error e) {
    }
    writeln(f);
}

Bye,
bearophile