From 4511936a870cf351d247f8d18f9a9f5f1b0e384c Mon Sep 17 00:00:00 2001
From: Mike J Innes <mike.j.innes@gmail.com>
Date: Wed, 7 Feb 2018 23:21:04 +0000
Subject: [PATCH] fixes #116

---
 src/tracker/scalar.jl | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/tracker/scalar.jl b/src/tracker/scalar.jl
index f37f8c73..3f38d9f0 100644
--- a/src/tracker/scalar.jl
+++ b/src/tracker/scalar.jl
@@ -30,10 +30,12 @@ Base.:(==)(x::TrackedNumber, y::Number) = data(x) == y
 Base.:(==)(x::Number, y::TrackedNumber) = x == data(y)
 Base.:(==)(x::TrackedNumber, y::TrackedNumber) = data(x) == data(y)
 
-for f in :[isinf, isnan].args
-  @eval Base.$f(x::TrackedNumber) = isinf(data(x))
+for f in :[isinf, isnan, isfinite].args
+  @eval Base.$f(x::TrackedNumber) = Base.$f(data(x))
 end
 
+Base.Printf.fix_dec(x::TrackedNumber, n::Int) = Base.Printf.fix_dec(data(x), n)
+
 Base.promote_rule(::Type{TrackedNumber{S}},::Type{T}) where {S,T} =
   TrackedNumber{promote_type(S,T)}