Re: Float numbers equality.

[Luiz Henrique de Figueiredo <lhf@...>]

> function float_equal(lhs, rhs, epsilon)
>     return math.abs(lhs - rhs) < epsilon
> end

As mentioned before, if you have to do this, you need to use *relative* error,
not absolute error:
      return math.abs(lhs - rhs) < epsilon*rhs

Floating-poin numbers are not distributed uniformily in their range;
there's lot of clustering and empty intervals, due to scaling.