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Not sure if this is worth bringing up, but...

Lua 5.1-rc always gives "-0" for zero mod results. Since PIL2 says "the result always having the same sign as the second argument", this raises my eyebrowns.

Also, it would certainly be more 'natural' for a programmer to receive 5%5 == 0, although functionally the 'sign' of zero does not hurt.

OS X 10.4.4 PowerPC

powerpc-apple-darwin8-gcc-4.0.0 (GCC) 4.0.0 (Apple Computer, Inc. build 5026)
Copyright (C) 2005 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


Lua 5.1  Copyright (C) 1994-2006, PUC-Rio
> print(5%(-2))
> print(5%(-5))
> print((-5)%(-5))
> print(5%5)
> print(0%5)