Torben Hagerup wrote:
Run under D version 2.037, the program below runs through without raising any
assert exceptions. This shows an erratic behavior with respect to ieeeFlags
that is hardly intended. Other ieeeFlags also work (or, rather, do not work) in
unexpected ways.
--------------------
This isn't a bug.
import std.math;
void main() {
// The execution leads to no assert errors
real a,b=3.5;
resetIeeeFlags();
assert(!ieeeFlags.divByZero); // so far no zero division
a=3.5/0.0L; // but now ...
This occurred at compile time. At runtime, this became:
a = real.infinity;
assert(a==real.infinity); // yes, exactly
assert(!ieeeFlags.divByZero); // perhaps not, after all
b/=0.0L; // once more, the same, really
It's not the same. This is a runtime division by zero.
assert(b==real.infinity); // yes, the same
assert(ieeeFlags.divByZero); // oops, not the same after all?
}
