Fix broken log operator - infinite recursion!

operators.jl

@@ -3,4 +3,3 @@ plus(x::Float32, y::Float32)::Float32 = x+y
 mult(x::Float32, y::Float32)::Float32 = x*y;
 pow(x::Float32, y::Float32)::Float32 = sign(x)*abs(x)^y;
 div(x::Float32, y::Float32)::Float32 = x/y;
-log(x::Float32)::Float32 = log(abs(x) + 1f-9);