80 bit floating point emulator

[Ola Fosheim Grøstad]

On Sunday, 6 February 2022 at 11:27:28 UTC, max haughton wrote:
> We already have moved on, technically. There are still some 
> places using real in Phobos IIRC that should be violently 
> culled because it destroys performance, but having the 
> precision available isn't so bad.

The only thing needed is to load and save 80bits from 64bit and 
128bit. I wonder who would want 80 bits? If they need more than 
64bits then they most likely want 128 bits or 256 bits.