Fw: Conversion to mpfr_t

[Paul Brook]

> The next stage involves the removal of the 100-bit precision
> mpfr_t types in favor of 24-, 53-, and perhaps 113-bit
> precision type.   This step may take me several days because
> I need to determine how to handle mix-mode math.

You should never need to do mixed-mode math. All arguments should be converted 
to the same type before arithmetic is performed.

Unless you mean doing both 24- and 53-bit arithmetic in [different parts of] 
the same program.

Paul