Fixed-point version for FPU-less systems

[Cacodemon345]

A fixed-point version of the library would be nice for systems with no FPU (e.g. 32-bit ARM systems with enough memory to handle reasonable soundfonts) and also for purposes of using it in the likes of SBEMU/VSBHDA (where reliance on the FPU can cause problems).

[viti95]

This should benefit systems with weak FPUs, such as the Vortex86 or VIA CPUs. For example, a 933 MHz Vortex86MX has FPU performance comparable to a Pentium II 350 MHz and is incapable of handling real-time MIDI synthesis:

https://youtu.be/klvMr7NKQq8

[alexriegler12]

Yes, it would be nice to do a fixed point version (for eg raspberry pi pico) and also make it independent of little endian.