Why don't we switch to C like floating pointed arithmetic instead of automatic expansion to reals?

[David Nadlinger via Digitalmars-d]

On Saturday, 6 August 2016 at 21:56:06 UTC, Walter Bright wrote:
> Let me rephrase the question - how does fusing them alter the 
> result?

There is just one rounding operation instead of two.

Of course, if floating point values are strictly defined as 
having only a minimum precision, then folding away the rounding 
after the multiplication is always legal.

  — David