o3tl::make_unsigned

[Stephan Bergmann]

On 31/01/2020 12:41, Luboš Luňák wrote:
>   I'm fine with this if this would be ok for you (the way I see it, this
> o3tl::ssize() would be basically my proposed o3tl::make_signed() with a
> different name).

see here:

On 30/01/2020 11:39, Stephan Bergmann wrote:
 > C++20 will have ssize for containers (see
 > <http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1227r2.html>
 > "P1227: Signed ssize() functions, unsigned size() functions (Revision
 > 2)").  Using it would probably help remove a large chunk of
 > signed/unsigned mixture in existing LO code.
 >
 > (I'm fine with using it, as, sure, for containers it is clear that
 > restricting maximum size to no larger than size_t/2 is feasible.  What I
 > dislike is a helper function mapping from an arbitrary unsigned type to
 > its signed counterpart pretending to be a total function.)