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- Subject: Re: Possible Bug in bitlib under Windows?
- From: KHMan <keinhong@...>
- Date: Sat, 13 Dec 2008 03:11:14 +0800
Jeff Wise wrote:
I have had lots of problems with hex constants, probably because my mind is
stuck in the IBM mainframe world. Since 0x'7FFFFFFF is the 32-bit signed
integer representation of the largest possible integer, and if Lua uses
something else (8 byte FLOAT?), then this is a bogus assignment mechanism to
get all ones for a bit comparison/manipulation.
There is nothing wrong with the hex constants, it works fine on
Linux and on MinGW, plus print(0xFFFFFFFF) give a correct answer.
It's likely a problem with the TOBIT() macro in the bit library
sources. I couldn't figure out how the -2147483648 values could
have been calculated or produced by visual inspection, or whether
the failed bit lib was compiled using the other macro definition
for TOBIT(). So at this point, I think we've pretty much exhausted
the guessing bit and some debugging is necessary.
Kein-Hong Man (esq.)
Kuala Lumpur, Malaysia