Re: Lua 5.1 (alpha) now available

[Mike Pall <mikelu-0509@...>]

Hi,

Gavin Wraith wrote:
> > But why bother? All CPUs other than x86 have
> > a decent FP instruction set (x87 FP is _not_ decent).
> 
> Not ARMs, alas.

Ahemm, I _do_ word my postings carefully.

The ARM FP instruction set _does_ provide both rounding and
truncation:
  FIX  reg, fpreg
  FIXZ reg, fpreg

The fact that most ARM based systems don't have a (hardware) FPU
is something quite different and doesn't matter for the discussion
at hand. Because then you'd better use integers for lua_Number
which makes all the relevant casts a no-op.

Bye,
     Mike