build for the platforms without SIMD and 32-bit platforms out of the box correctly

[KOLANICH]

Compression of integers is an algo. It should be possible to decompress the data compressed this way on such platforms.

[searchivarius]

SIMD algorithms on a Turing machine seems like a very cool topic. There are no major platforms without SIMD nowadays. A big question is how to support them all without handcrafted assembly. It's not possible IMHO without some standardization on vendors side or reliance on somewhat limited libraries like SIMDE.

[KOLANICH]

There are no major platforms without SIMD nowadays.

I guess such a statement is almost equivalent to calling platforms without SIMD as non-platforms ("a calculator" 🖩 as some people call them) and treating people using them as subhumans.

big question is how to support them all without handcrafted assembly.

I guess, OpenCL may be helpful. Also old plain C++ without using any SIMD.

[searchivarius]

The library has non-SIMD codecs as well: https://github.com/lemire/FastPFor/blob/master/headers/codecfactory.h

Performance is expectedly underwhelming compared to SIMD versions. So, bad news for platforms without SIMD.

[KOLANICH]

The library has non-SIMD codecs as well: https://github.com/lemire/FastPFor/blob/master/headers/codecfactory.h

It is good. Then I'd just need to fix CMake scripts to make it work. Because recently I have tried to build it for Pentium III, and got an error about lack of SIMD.

[lemire]

The library requires x64 processors, as indicated in the 'hardware requirements' section of the README. The Pentium III is not an x64 processor.