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I have an unpublished patch for making Lua 5.1-w4 run with _both_ float and int32 number types, transparently to the application layer. This is imho highly useful on ARM etc. platforms that don't have an FPU.

The patch adds complexity to the code, and is not much faster than pure-float code would be. However, it does offer "clean" integer range, while using 24-bit for floating points. Anyone interested? :)


Rici Lake kirjoitti 9.1.2006 kello 18.09:

On the other hand, if the Lua instance were compiled with lua_Number as a (single-precision) float, then the array part could grow to a larger size than could be represented as an integral lua_Number, which seems like it ought to trigger an error of some sort.