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On Jun 26, 2014 8:36 AM, "Roberto Ierusalimschy" <roberto@inf.puc-rio.br> wrote:
>
> > > The other place where truncation (already) occurs is "outside" Lua,
> > > in the API, when the C code uses things like lua_checkinteger. This
> > > is the only place where the change would affect compatibility:
> > > string.sub("abc", 2.3) currently behaves in a non-specified way
> > > (although most certainly it is equivalent to string.sub("abc", 2)
> > > and we are afraid some programmers assume this behavior); current
> > > 5.3w specifies that 2.3 should be truncated to 2, while with this new
> > > proposal Lua would raise an error.
> > >
> >
> > Are you saying that a float value would return an error, or a non-integral
> > value would return an error?
>
> A non-integral value would raise an error, as an out-of-bound float
> already raises an error in work3. Something like 10.0 still behaves
> like 10 in most situations.
>
> -- Roberto
>

What about 10.0000000000000073?