Fixed-point operations

[Tom St Denis]

Cristea Bogdan wrote:
> Is there a library implementing fast fixed-point operations (addition,
> multiplication, comparisons)? I have used till now a C++ class, but
> the fixed-point operations are very slow wrt to their floating-point
> counterparts.
>
>   
Slow on what?  Most big cpus nowadays have very fast FPUs.  On something 
like an ARM without an FPU fixed point should be quite a bit faster....