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- Subject: Re: Lua number type and 64-bit machines
- From: Luiz Henrique de Figueiredo <lhf@...>
- Date: Fri, 6 Mar 2009 11:12:25 -0300
> The x86_64 architecture does not support long doubles in hardware. As
> for other architectures, I don't know.
#define LUA_NUMBER long double
simply allows the compiler to ignore long, use it if there is hardware support,
or emulate it by software (which would probably slow Lua a bit).
Anyway, one answer the original question is that Lua already supports
long doubles in 64-bit machines, just not automatically: you need to change
a few lines in luaconf.h. But you'll want to know how your compiler handles