From f20fa65848a5df1b288d22f32e13672b254ec8fb Mon Sep 17 00:00:00 2001
From: Christopher Rackauckas <accounts@chrisrackauckas.com>
Date: Wed, 14 Nov 2018 09:58:41 -0800
Subject: [PATCH] Add missing eps overload for TrackedReal

`eps` can be called on the number type as well, and this is missing from the TrackedReal overloads.
---
 src/tracker/lib/real.jl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/tracker/lib/real.jl b/src/tracker/lib/real.jl
index 3546beba..e494b8ef 100644
--- a/src/tracker/lib/real.jl
+++ b/src/tracker/lib/real.jl
@@ -39,6 +39,7 @@ for op in [:(==), :≈, :<]
 end
 
 Base.eps(x::TrackedReal) = eps(data(x))
+Base.eps(::Type{TrackedReal{T}}) where T = eps(T)
 
 for f in :[isinf, isnan, isfinite].args
   @eval Base.$f(x::TrackedReal) = Base.$f(data(x))