[Issue 13474] Discard excess precision for float and double (x87)

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=13474

--- Comment #26 from Walter Bright <bugzilla at digitalmars.com> ---
> I think that's well covered by adding an intrinsic,

I produced a PR request for that in druntime. Nobody liked it, and it
languishes unpulled.

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

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