We support extreme portability for sufficiently large values of two.

> This shows that "extremely portable" is actually marketing for "It supports a number of platforms. In my opinion, this number is big".

The number might just be zero - did anyone check if this compiles? I am trying to track down where the function `sp_mem_allocator_alloc_type` is defined (used in 3x places) but it doesn't appear in the GH search results.

I'm not going to clone and build this (too dangerous).