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

[Walter Bright via Digitalmars-d]

On 8/4/2016 11:53 AM, Walter Bright wrote:
> It has been proposed many times that the solution for D is to have a function
> called toFloat() or something like that in core.math, which guarantees a round
> to float precision for its argument. But so far nobody has written such a function.

https://github.com/dlang/druntime/pull/1621