Re: Lua string library partially reimplemented in Lua

[Louis Mamakos <louie@...>]

On Sep 21, 2008, at 12:18 PM, Mike Pall wrote:
> Whether to write bit.band(a, 0xffff0000) or bit.band(a, -0x10000)
> is the programmer's choice. Of course the former is largely
> preferred, but the implementation doesn't care.

Just for completeness, this is only true for CPU architectures that
implement 2's complement arithmetic.  While 1's complement CPU
architectures [1] are even more rare than non-IEEE floating point
implementations in this century, portability goals might lead
you to a less architecture-specific definition.

Louis Mamakos

[1] UNIVAC/Sperry/Unisys 1100/2200 architectures, DEC-10/20 among
them.