Compile time float binary representation

[Andrei Alexandrescu]

Jeremie Pelletier wrote:
> Is there a way to convert a float (or double/real) to an integral number without changing its binary representation at compile time?
> 
> I need to extract the sign, exponent and mantissa yet I cant use bit shifting.
> "Error: 'R' is not of integral type, it is a real" is the error I get.
> 
> The usual *cast(uint*)&value wont work either at compile time.
> 
> Any suggestions?

I got this to work, would it be applicable to your need?

void main(string[] args)
{
     union A
     {
         double x;
         int y;
     }
     enum A a = A(0.3);
     writeln(a.x);
     writeln(a.y);
}


Andrei