Re-compile lua to use double precision for floating-point numbers
lists at nanl.de
Mon May 3 13:11:43 EDT 2010
You could remove all patches, as they're mostly just to avoid
performance issues :)
On Sun, 2010-05-02 at 14:42 -0700, Delbert Franz wrote:
> I'm trying to set the values for Lua so that it will use double
> precision for floating point numbers. Yes, I know it will be slow:)
> However, I am trying to compare the Nanonote to some other small
> computers I have, and all of them come with Lua set to use double
> precision for floating-pint numbers. Since I am already doing a
> custom image for the Nanonote I thought it should not be that hard to
> get Lua compiled to do the same:)
> Well, it turns out to be rather too complex for me:( The latest
> version of Lua (5.1.4) from its website has a luaconf.h which contains
> the number definition. Openwrt extensively patches/modifies this so
> that in addition to luaconf.h, there is a lnum_config.h file as well.
> Not having programmed in C for some decades, all of my attempts ended
> either not changing the number representation or in changing it in
> such a way that parts were broken.
> Does anyone on this list know what changes are required in luaconf.h
> and lnum_config.h so that Lua will properly use double-precision
> floating point numbers? If not, what is the best place within the
> OpenWRT community to inquire as to how that should be done?
> discussion mailing list
> discussion at lists.qi-hardware.com
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