I've had the idea to hide this implementation detail and improve code
readability for some time now, but it obviously must still all inline,
to be indistinguishable from a direct assignment of the correct value…
… which, amazingly, it does! Even the static_cast from float to int.
The latter allows us to exclusively implement this for float, since we
do have to express the occasional value smaller than 16.
Who needs macros anyway. Yay, C++ in TH04 and TH05 after all!
Part of P0030, funded by zorg.
nmlgc