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- Subject: Re: Some small requests for the next release
- From: Rici Lake <lua@...>
- Date: Wed, 2 Mar 2005 12:04:21 -0500
On 1-Mar-05, at 8:41 AM, Roberto Ierusalimschy wrote:
What is wrong with the following code?
math.nan = 0/0
math.inf = 1/0
If you've compiled Lua with integer Numbers rather than floating point
ones, this will crash and burn, probably.
Personally, I think NaN should coerce to a boolean false; that would be
much cleaner. (In fact, since NaN is not available as a table key,
there is a good argument for just turning NaN's into nil).
math.isnan = function (x) return x ~= x end
math.isnotnan = ... -- beware: this one may be patented already
Put that in a file `nan.lua' and just say `require "nan"´.